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Caballeros Lam M, Pujols P, Ezponda Casajús A, Guillén Valderrama F, García Velloso MJ, Wyss A, García Del Barrio L, Larrache Latasa J, Pueyo Villoslada J, Lozano Escario MD, de-Torres JP, Alcaide Ocaña AB, Campo Ezquibela A, Seijo Maceiras L, Montuenga Badía L, Zulueta J, Iñarrairaegui Bastarrica M, Herrero Santos I, Bastarrika Alemañ G. Lung cancer screening using low-dose CT and FDG-PET in liver transplant recipients. Liver Transpl 2023; 29:1100-1108. [PMID: 36929835 DOI: 10.1097/lvt.0000000000000121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 02/06/2023] [Indexed: 03/18/2023]
Abstract
To address the feasibility of implementing a lung cancer screening program in liver transplant recipients (LTR) targeted to detect early-stage lung cancer one hundred twenty-four LTR (89% male, 59.8+/-8.8 y old), who entered the lung cancer screening program at our hospital were reviewed. The results of the diagnostic algorithm using low-dose CT and F-18-fluorodeoxyglycose positron emission tomography (FDG-PET) were analyzed. Lung cancer was detected in 12 LTR (9.7%), most of which corresponded to the non-small cell subtype. Two of the 12 lung cancers were detected in the baseline study (prevalence of 1.6%), whereas 10 patients were diagnosed with lung cancer in the follow-up (incidence of 8.1%). Considering all cancers, 10 of 12 (83.3%) were diagnosed at stage I, one cancer was diagnosed at stage IIIA, and another one at stage IV. The sensitivity, specificity, diagnostic accuracy, and positive and negative predictive values of F-18-fluorodeoxyglycose positron emission tomography to detect malignancy in our cohort were 81.8%,100%, 99.3%, 100%, and 99.3%, respectively. A carefully followed multidisciplinary lung cancer screening algorithm in LTR that includes F-18-fluorodeoxyglycose positron emission tomography and low-dose CT allows lung cancer to be diagnosed at an early stage while reducing unnecessary invasive procedures.
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Affiliation(s)
| | - Paula Pujols
- School of Medicine, University of Navarra, Pamplona, Spain
| | | | | | | | - Alejandra Wyss
- Department of Geological and Mining Engineering. Universidad Politécnica de Madrid
| | | | | | | | | | - Juan P de-Torres
- Department of Pulmonary, Clinica Universidad de Navarra, Pamplona, Spain
| | | | | | | | - Luis Montuenga Badía
- Solid tumors and biomarkers program, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - Javier Zulueta
- Department of Pulmonary, Mount Sinai Morningside, New York, USA
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Hou H, Yu S, Xu Z, Zhang H, Liu J, Zhang W. Prediction of malignancy for solitary pulmonary nodules based on imaging, clinical characteristics and tumor marker levels. Eur J Cancer Prev 2021; 30:382-388. [PMID: 33284149 PMCID: PMC8322042 DOI: 10.1097/cej.0000000000000637] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/17/2020] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To establish a prediction model of malignancy for solitary pulmonary nodules (SPNs) on the basis of imaging, clinical characteristics and tumor marker levels. METHODS Totally, 341 cases of SPNs were enrolled in this retrospective study, in which 70% were selected as the training group (n = 238) and the rest 30% as the verification group (n = 103). The imaging, clinical characteristics and tumor marker levels of patients with benign and malignant SPNs were compared. Influencing factors were identified using multivariate logistic regression analysis. The model was assessed by the area under the curve (AUC) of the receiver operating characteristic curve. RESULTS Differences were evident between patients with benign and malignant SPNs in age, gender, smoking history, carcinoembryonic antigen (CEA), neuron-specific enolase, nodule location, edge smoothing, spiculation, lobulation, vascular convergence sign, air bronchogram, ground-glass opacity, vacuole sign and calcification (all P < 0.05). Influencing factors for malignancy included age, gender, nodule location, spiculation, vacuole sign and CEA (all P < 0.05). The established model was as follows: Y = -5.368 + 0.055 × age + 1.012 × gender (female = 1, male = 0) + 1.302 × nodule location (right upper lobe = 1, others = 0) + 1.208 × spiculation (yes = 1, no = 0) + 2.164 × vacuole sign (yes = 1, no = 0) -0.054 × CEA. The AUC of the model with CEA was 0.818 (95% confidence interval, 0.763-0.865), with a sensitivity of 64.80% and a specificity of 84.96%, and the stability was better through internal verification. CONCLUSIONS The prediction model established in our study exhibits better accuracy and internal stability in predicting the probability of malignancy for SPNs.
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Affiliation(s)
- Hongjun Hou
- Imaging Department, Weihai Central Hospital, Weihai, Shandong, China
| | - Shui Yu
- Imaging Department, Weihai Central Hospital, Weihai, Shandong, China
| | - Zushan Xu
- Imaging Department, Weihai Central Hospital, Weihai, Shandong, China
| | - Hongsheng Zhang
- Imaging Department, Weihai Central Hospital, Weihai, Shandong, China
| | - Jie Liu
- Imaging Department, Weihai Central Hospital, Weihai, Shandong, China
| | - Wenjun Zhang
- Imaging Department, Weihai Central Hospital, Weihai, Shandong, China
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Wu Z, Guo B, Huang B, Hao X, Wu P, Zhao B, Qin Z, Xie J, Li S. Phantom and clinical assessment of small pulmonary nodules using Q.Clear reconstruction on a silicon-photomultiplier-based time-of-flight PET/CT system. Sci Rep 2021; 11:10328. [PMID: 33990659 PMCID: PMC8121798 DOI: 10.1038/s41598-021-89725-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 04/01/2021] [Indexed: 11/09/2022] Open
Abstract
To evaluate the quantification accuracy of different positron emission tomography-computed tomography (PET/CT) reconstruction algorithms, we measured the recovery coefficient (RC) and contrast recovery (CR) in phantom studies. The results played a guiding role in the partial-volume-effect correction (PVC) for following clinical evaluations. The PET images were reconstructed with four different methods: ordered subsets expectation maximization (OSEM), OSEM with time-of-flight (TOF), OSEM with TOF and point spread function (PSF), and Bayesian penalized likelihood (BPL, known as Q.Clear in the PET/CT of GE Healthcare). In clinical studies, SUVmax and SUVmean (the maximum and mean of the standardized uptake values, SUVs) of 75 small pulmonary nodules (sub-centimeter group: < 10 mm and medium-size group: 10-25 mm) were measured from 26 patients. Results show that Q.Clear produced higher RC and CR values, which can improve quantification accuracy compared with other methods (P < 0.05), except for the RC of 37 mm sphere (P > 0.05). The SUVs of sub-centimeter fludeoxyglucose (FDG)-avid pulmonary nodules with Q.Clear illustrated highly significant differences from those reconstructed with other algorithms (P < 0.001). After performing the PVC, highly significant differences (P < 0.001) still existed in the SUVmean measured by Q.Clear comparing with those measured by the other algorithms. Our results suggest that the Q.Clear reconstruction algorithm improved the quantification accuracy towards the true uptake, which potentially promotes the diagnostic confidence and treatment response evaluations with PET/CT imaging, especially for the sub-centimeter pulmonary nodules. For small lesions, PVC is essential.
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Affiliation(s)
- Zhifang Wu
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, No. 85 South Jiefang Road, Taiyuan, 030001, Shanxi, People's Republic of China.,Molecular Imaging Precision Medical Collaborative Innovation Center, Shanxi Medical University, Taiyuan, Shanxi, People's Republic of China
| | - Binwei Guo
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, No. 85 South Jiefang Road, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Bin Huang
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, No. 85 South Jiefang Road, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Xinzhong Hao
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, No. 85 South Jiefang Road, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Ping Wu
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, No. 85 South Jiefang Road, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Bin Zhao
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, No. 85 South Jiefang Road, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Zhixing Qin
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, No. 85 South Jiefang Road, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Jun Xie
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, People's Republic of China
| | - Sijin Li
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, No. 85 South Jiefang Road, Taiyuan, 030001, Shanxi, People's Republic of China. .,Molecular Imaging Precision Medical Collaborative Innovation Center, Shanxi Medical University, Taiyuan, Shanxi, People's Republic of China.
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Chen J, Mehta V, Chowdhary V, Chaya N, Lowry JW. Outcome of PET-Negative Solid Pulmonary Nodules: A Retrospective Study. Acad Radiol 2021; 28:628-633. [PMID: 32303444 DOI: 10.1016/j.acra.2020.03.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/25/2020] [Accepted: 03/08/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVE It was observed that malignancy had been found on follow-up in patients with PET-negative solid solitary pulmonary nodules (SPN). A retrospective analysis was performed to observe the natural history and malignant potential of these lesions, which, in routine practice, are presumed to be inactive. MATERIALS AND METHODS Patients with an incidentally-discovered solid solitary pulmonary nodule who then had a negative follow-up PET/CT from 2005 to 2015 were identified using a text-based search methodology. These patients' charts were mined to determine the rate of development of subsequent malignancy from these index nodules. RESULTS Of the patients with initially PET-negative solitary pulmonary nodule (n = 62, 43.5% women, mean age 65), 44 had clinical follow-up of the index lesion. 8 (7 pathology-proven) subsequent malignancies were identified with a mean time to diagnosis of 37.6 (±31.3) months. There were no statistically significant predictors of subsequent development of cancer (including age, gender, and smoking status). CONCLUSION Upon follow up, 18.2% of the initially queried solid PET-negative nodules developed subsequent malignancy at an average time of 37.6 months, suggesting the continued need for follow-up of these initially PET-negative nodules beyond the 2 years currently suggested in popular guidelines. Importantly, these findings also remind radiologists that a negative PET/CT is not a surrogate for tissue diagnosis in the case of non-FDG avid SPN.
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Kim TJ, Kim CH, Lee HY, Chung MJ, Shin SH, Lee KJ, Lee KS. Management of incidental pulmonary nodules: current strategies and future perspectives. Expert Rev Respir Med 2019; 14:173-194. [PMID: 31762330 DOI: 10.1080/17476348.2020.1697853] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Introduction: Detection and characterization of pulmonary nodules is an important issue, because the process is the first step in the management of lung cancers.Areas covered: Literature review was performed on May 15 2019 by using the PubMed, US National Library of Medicine National Institutes of Health, and the National Center for Biotechnology information. CT features helping identify the druggable mutations and predict the prognosis of malignant nodules were presented. Technical advancements in MRI and PET/CT were introduced for providing functional information about malignant nodules. Advances in various tissue biopsy techniques enabling molecular analysis and histologic diagnosis of indeterminate nodules were also presented. New techniques such as radiomics, deep learning (DL) technology, and artificial intelligence showing promise in differentiating between malignant and benign nodules were summarized. Recently, updated management guidelines for solid and subsolid nodules incidentally detected on CT were described. Risk stratification and prediction models for indeterminate nodules under active investigation were briefly summarized.Expert opinion: Advancement in CT knowledge has led to a better correlation between CT features and genomic alterations or tumor histology. Recent advances like PET/CT, MRI, radiomics, and DL-based approach have shown promising results in the characterization and prognostication of pulmonary nodules.
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Affiliation(s)
- Tae Jung Kim
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine (SKKU-SOM), Seoul, South Korea
| | - Cho Hee Kim
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine (SKKU-SOM), Seoul, South Korea
| | - Ho Yun Lee
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine (SKKU-SOM), Seoul, South Korea
| | - Myung Jin Chung
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine (SKKU-SOM), Seoul, South Korea
| | - Sun Hye Shin
- Respiratory and Critical Care Division of Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine (SKKU-SOM), Seoul, South Korea
| | - Kyung Jong Lee
- Respiratory and Critical Care Division of Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine (SKKU-SOM), Seoul, South Korea
| | - Kyung Soo Lee
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine (SKKU-SOM), Seoul, South Korea
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Chen H, Huang S, Zeng Q, Zhang M, Ni Z, Li X, Xu X. A retrospective study analyzing missed diagnosis of lung metastases at their early stages on computed tomography. J Thorac Dis 2019; 11:3360-3368. [PMID: 31559039 DOI: 10.21037/jtd.2019.08.19] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Background Lungs are one of the target organs of metastases of primary lung, breast, liver, colorectal, and esophageal cancer. While computed tomography (CT) is the most widely used modality for detecting lung metastases, it is still very challenging to detect them at the earlier stages. If lung metastases could be found on CT scans at the earliest time points, patients would benefit by beginning treatment earlier. The objective of this study was to demonstrate that CT can reveal lung metastases in many cases at even earlier stages than current radiological practice may find. Methods One hundred patients with lung metastases were randomly selected and their surveillance CT scans were analyzed retrospectively. The patients had primary cancer in the breasts, lungs, esophagus, colorectum, and liver. All patients had multiple CT examinations of the lungs and their metastases, if any, were confirmed by subsequent CT scans. The earliest CT scans were examined to determine whether lung metastases at the same locations had been diagnosed or missed. Missed lung metastases, categorized by type of the primary cancer and adjacency to nearby blood vessels, were statistically analyzed. Results There were 36/100 (36%) cases of missed lung metastases, including 15 cases of single metastasis and 21 cases of multiple metastases. There were a total of 174 missed loci of lung metastases. Where metastases were missed, there was a statistically significant difference (P<0.001) in their distribution within the sub-regions of the lungs. Adjacency to blood vessels appeared to be a significant factor in metastases being missed during diagnosis (P<0.001). Conclusions There was a considerable percentage of early lung metastases that were missed by radiologists but actually appeared on CT scans. The capability of CT to reveal such early metastases opens up an opportunity to move up the time points of detecting lung metastases through clinical and training improvement and technology development such as computer-aided detection.
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Affiliation(s)
- Huai Chen
- Department of Radiology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Suidan Huang
- Department of Radiology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Qingsi Zeng
- Department of Radiology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Min Zhang
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Zhiwen Ni
- Department of Radiology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Xiaoling Li
- Department of Radiology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Xiaoyin Xu
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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8
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Jia Y, Gong W, Zhang Z, Tu G, Li J, Xiong F, Hou H, Zhang Y, Wu M, Zhang L. Comparing the diagnostic value of 18F-FDG-PET/CT versus CT for differentiating benign and malignant solitary pulmonary nodules: a meta-analysis. J Thorac Dis 2019; 11:2082-2098. [PMID: 31285902 DOI: 10.21037/jtd.2019.05.21] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Background This quantitative meta-analysis was conducted to provide an indirect comparison of the diagnostic value of computed tomography (CT) with positron emission tomography (PET)/CT for differentiating benign and malignant solitary pulmonary nodules (SPNs). Methods PubMed, Embase, and the Cochrane Library were searched to identify eligible studies throughout November 2018, which differentiated benign and malignant SPNs using CT or PET/CT. The summary sensitivity, specificity, positive and negative likelihood ratio (PLR and NLR), diagnostic odds ratio (DOR), and area under the receiver operating characteristic curve (AUC) were calculated using bivariate generalized linear mixed model and random-effects model. The diagnostic value of CT with PET/CT was indirectly evaluated using the ratio for diagnostic parameters. Results The sensitivity, specificity, PLR, NLR, DOR, and AUC for CT were 0.94 [95% confidence interval (CI): 0.87-0.97], 0.73 (95% CI: 0.64-0.80), 3.45 (95% CI: 2.60-4.58), 0.09 (95% CI: 0.04-0.17), 32.01 (95% CI: 15.10-67.86), and 0.89 (95% CI: 0.86-0.91), respectively. The pooled sensitivity, specificity, PLR, NLR, DOR, and AUC for PET/CT were 0.89 (95% CI: 0.85-0.92), 0.78 (95% CI: 0.66-0.86), 3.97 (95% CI: 2.57-6.13), 0.15 (95% CI: 0.10-0.20), 24.04 (95% CI: 12.71-45.48), and 0.91 (95% CI: 0.89-0.94), respectively. No significant differences were observed between CT and PET/CT for sensitivity, specificity, PLR, NLR, DOR, and AUC. Conclusions This study used both CT and PET/CT with a moderate-to-high diagnostic value for differentiating benign and malignant SPNs and showed no significant differences in diagnostic parameters between CT and PET/CT.
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Affiliation(s)
- Yuzhu Jia
- Department of Radiology, Zhejiang Provincial Tongde Hospital, Hangzhou 310012, China
| | - Wanfeng Gong
- Department of Radiology, Zhejiang Provincial Tongde Hospital, Hangzhou 310012, China
| | - Zhiping Zhang
- Department of Radiology, Zhejiang Provincial Tongde Hospital, Hangzhou 310012, China
| | - Gaofeng Tu
- Department of Radiology, Zhejiang Provincial Tongde Hospital, Hangzhou 310012, China
| | - Jiapeng Li
- Department of Radiology, Zhejiang Provincial Tongde Hospital, Hangzhou 310012, China
| | - Fanfan Xiong
- Department of Radiology, Zhejiang Provincial Tongde Hospital, Hangzhou 310012, China
| | - Hongtao Hou
- Department of Radiology, Zhejiang Provincial Tongde Hospital, Hangzhou 310012, China
| | - Yunyi Zhang
- Department of Radiology, Zhejiang Provincial Tongde Hospital, Hangzhou 310012, China
| | - Meiqian Wu
- Department of Traditional Chinese Medicine, Zhejiang Provincial Tongde Hospital, Hangzhou 310012, China
| | - Liping Zhang
- Department of Traditional Chinese Medicine, Zhejiang Provincial Tongde Hospital, Hangzhou 310012, China
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Comparison of the 18F-FDG avidity at PET of benign and malignant pure ground-glass opacities: a paradox? Clin Radiol 2019; 74:187-195. [DOI: 10.1016/j.crad.2018.12.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 12/13/2018] [Indexed: 11/24/2022]
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Looking for Lepidic Component inside Invasive Adenocarcinomas Appearing as CT Solid Solitary Pulmonary Nodules (SPNs): CT Morpho-Densitometric Features and 18-FDG PET Findings. BIOMED RESEARCH INTERNATIONAL 2019; 2019:7683648. [PMID: 30733967 PMCID: PMC6348850 DOI: 10.1155/2019/7683648] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 12/30/2018] [Indexed: 12/17/2022]
Abstract
Objective To investigate CT morphologic and densitometric features and 18-FDG PET findings of surgically excised lung adenocarcinomas "mixed subtype" with predominant lepidic component, appearing as solid solitary pulmonary nodules (SPNs) on CT scan. Materials and Methods Approval for this study was given from each local institutional review board according to its retrospective nature. Nodules pathologically classified as lung adenocarcinoma mixed subtype with bronchioloalveolar otherwise lepidic predominant component, in three different Italian institutions (Napoli; Varese; Parma), were retrospectively selected. Results 22 patients were identified. The number of SPNs with smooth margins was significantly lower with respect to the number of SPNs with spiculated margins (p: 0.033), radiating spiculations (p: 0.019), and notch sign (p: 0.011). Mean contrast enhancement (CE) was 53.34 HU (min 5.5 HU, max 112 HU); considering 15 HU as cut-off value, CE was positive in 20/22 cases. No significant correlation was found between size and CE. Mean SUVmax was 2.21, ranging from 0.2 up to 7.5 units; considering 2.5 units as cut-off, SUVmax was positive in 7/22 cases. The number of SPNs with positive CE was significantly higher than the number of SPNs with positive SUVmax (p: 0.0005). Conclusion CT generally helps in identifying solid SPN suspicious for malignancy but 18-FDG PET may result in false-negative evaluation; when 18-FDG PET findings of a solid SPN are negative even though CT morphology and CE suggest malignancy, radiologist should consider that lepidic component may be present inside the invasive tumor, despite the absence of ground glass.
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Fouda N, Helmy EM, Abdel Fattah S. Can dynamic contrast enhanced multidetector CT differentiate the nature of different pulmonary nodules? THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2018. [DOI: 10.1016/j.ejrnm.2018.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Peikert T, Duan F, Rajagopalan S, Karwoski RA, Clay R, Robb RA, Qin Z, Sicks J, Bartholmai BJ, Maldonado F. Novel high-resolution computed tomography-based radiomic classifier for screen-identified pulmonary nodules in the National Lung Screening Trial. PLoS One 2018; 13:e0196910. [PMID: 29758038 PMCID: PMC5951567 DOI: 10.1371/journal.pone.0196910] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 04/23/2018] [Indexed: 12/22/2022] Open
Abstract
Purpose Optimization of the clinical management of screen-detected lung nodules is needed to avoid unnecessary diagnostic interventions. Herein we demonstrate the potential value of a novel radiomics-based approach for the classification of screen-detected indeterminate nodules. Material and methods Independent quantitative variables assessing various radiologic nodule features such as sphericity, flatness, elongation, spiculation, lobulation and curvature were developed from the NLST dataset using 726 indeterminate nodules (all ≥ 7 mm, benign, n = 318 and malignant, n = 408). Multivariate analysis was performed using least absolute shrinkage and selection operator (LASSO) method for variable selection and regularization in order to enhance the prediction accuracy and interpretability of the multivariate model. The bootstrapping method was then applied for the internal validation and the optimism-corrected AUC was reported for the final model. Results Eight of the originally considered 57 quantitative radiologic features were selected by LASSO multivariate modeling. These 8 features include variables capturing Location: vertical location (Offset carina centroid z), Size: volume estimate (Minimum enclosing brick), Shape: flatness, Density: texture analysis (Score Indicative of Lesion/Lung Aggression/Abnormality (SILA) texture), and surface characteristics: surface complexity (Maximum shape index and Average shape index), and estimates of surface curvature (Average positive mean curvature and Minimum mean curvature), all with P<0.01. The optimism-corrected AUC for these 8 features is 0.939. Conclusions Our novel radiomic LDCT-based approach for indeterminate screen-detected nodule characterization appears extremely promising however independent external validation is needed.
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Affiliation(s)
- Tobias Peikert
- Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN, United States of America
| | - Fenghai Duan
- Department of Biostatistics and Center for Statistical Sciences, Brown University School of Public Health, Providence, Rhode Island, United States of America
| | - Srinivasan Rajagopalan
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States of America
| | - Ronald A. Karwoski
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States of America
| | - Ryan Clay
- Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN, United States of America
| | - Richard A. Robb
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States of America
| | - Ziling Qin
- Department of Biostatistics and Center for Statistical Sciences, Brown University School of Public Health, Providence, Rhode Island, United States of America
| | - JoRean Sicks
- Center for Statistical Sciences, Brown University School of Public Health, Providence, Rhode Island, United States of America
| | - Brian J. Bartholmai
- Department of Radiology, Mayo Clinic, Rochester, MN, United States of America
| | - Fabien Maldonado
- Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University, Nashville, TN, United States of America
- * E-mail:
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Li ZZ, Huang YL, Song HJ, Wang YJ, Huang Y. The value of 18F-FDG-PET/CT in the diagnosis of solitary pulmonary nodules: A meta-analysis. Medicine (Baltimore) 2018; 97:e0130. [PMID: 29561412 PMCID: PMC5895332 DOI: 10.1097/md.0000000000010130] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Solitary pulmonary nodules (SPNs) are common imaging findings. Many studies have indicated that F-fluorodeoxyglucose positron emission tomography/computed tomography (F-FDG-PET/CT) is an accurate test for distinguishing benign and malignant SPNs. The aim of this study was to investigate the value of F-FDG-PET/CT in the diagnosis of malignant SPNs. METHODS We systematically searched the PubMed and Embase databases up to March 2017, and published data on sensitivity, specificity, and other measures of diagnostic accuracy of F-FDG-PET/CT in the diagnosis of malignant SPNs were meta-analyzed. Statistical analyses were undertaken using Meta-DiSc 1.4 software and Stata version 12.0. The measures of accuracy of F-FDG-PET/CT in the diagnosis of malignant SPNs were pooled using random-effects models. RESULTS A total of 20 publications reporting 21 studies were identified. Pooled results indicated that F-FDG-PET/CT showed a diagnostic sensitivity of 0.89 (95% confidence interval [CI], 0.87-0.91) and a specificity of 0.70 (95% CI, 0.66-0.73). The positive likelihood ratio was 3.33 (95% CI, 2.35-4.71) and the negative likelihood ratio was 0.18 (95% CI, 0.13-0.25). The diagnostic odds ratio was 22.43 (95% CI, 12.55-40.07). CONCLUSIONS F-FDG-PET/CT showed insufficient sensitivity and specificity for diagnosing malignant SPNs; it cannot replace the "gold standard" pathology by resection or percutaneous biopsy. Larger studies are required for further evaluation.
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Affiliation(s)
- Zhen-Zhen Li
- Health Management Center, West China Hospital of Sichuan University
| | - Ya-Liang Huang
- Department of Nephrology and Rheumatology, Affiliated Hospital/Clinical Medical College of Chengdu University
| | - Hong-Jun Song
- Outpatient Department, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - You-Juan Wang
- Health Management Center, West China Hospital of Sichuan University
| | - Yan Huang
- Health Management Center, West China Hospital of Sichuan University
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MacManus M, Everitt S, Schimek-Jasch T, Li XA, Nestle U, Kong FMS. Anatomic, functional and molecular imaging in lung cancer precision radiation therapy: treatment response assessment and radiation therapy personalization. Transl Lung Cancer Res 2017; 6:670-688. [PMID: 29218270 DOI: 10.21037/tlcr.2017.09.05] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This article reviews key imaging modalities for lung cancer patients treated with radiation therapy (RT) and considers their actual or potential contributions to critical decision-making. An international group of researchers with expertise in imaging in lung cancer patients treated with RT considered the relevant literature on modalities, including computed tomography (CT), magnetic resonance imaging (MRI) and positron emission tomography (PET). These perspectives were coordinated to summarize the current status of imaging in lung cancer and flag developments with future implications. Although there are no useful randomized trials of different imaging modalities in lung cancer, multiple prospective studies indicate that management decisions are frequently impacted by the use of complementary imaging modalities, leading both to more appropriate treatments and better outcomes. This is especially true of 18F-fluoro-deoxyglucose (FDG)-PET/CT which is widely accepted to be the standard imaging modality for staging of lung cancer patients, for selection for potentially curative RT and for treatment planning. PET is also more accurate than CT for predicting survival after RT. PET imaging during RT is also correlated with survival and makes response-adapted therapies possible. PET tracers other than FDG have potential for imaging important biological process in tumors, including hypoxia and proliferation. MRI has superior accuracy in soft tissue imaging and the MRI Linac is a rapidly developing technology with great potential for online monitoring and modification of treatment. The role of imaging in RT-treated lung cancer patients is evolving rapidly and will allow increasing personalization of therapy according to the biology of both the tumor and dose limiting normal tissues.
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Affiliation(s)
- Michael MacManus
- Department of Radiation Oncology, Division of Radiation Oncology and Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Australia.,The Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Australia
| | - Sarah Everitt
- Department of Radiation Oncology, Division of Radiation Oncology and Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Australia.,The Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Australia
| | - Tanja Schimek-Jasch
- Department of Radiation Oncology, Medical Center, Faculty of Medicine, University of Freiburg, German Cancer Consortium (DKTK) Partner Site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - X Allen Li
- Department of Radiation Oncology, Medical College of Wisconsin, WI, USA
| | - Ursula Nestle
- Department of Radiation Oncology, Medical Center, Faculty of Medicine, University of Freiburg, German Cancer Consortium (DKTK) Partner Site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Radiation Oncology, Kliniken Maria Hilf, Moenchengladbach, Germany
| | - Feng-Ming Spring Kong
- Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN, USA
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16
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Divisi D, Barone M, Zaccagna G, Crisci R. Fluorine-18 fluorodeoxyglucose positron emission tomography in the management of solitary pulmonary nodule: a review. Ann Med 2017; 49:626-635. [PMID: 28590774 DOI: 10.1080/07853890.2017.1339906] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Solitary pulmonary nodules are common radiologic findings and their detection has increased due to the introduction and improvement of diagnostics. Since a nodule can be an expression of early lung cancers, a proper classification and management are required because its treatment might lead to decreased morbidity and mortality. In this regard, prominent guidelines are available although they are characterized sometimes by discordant and misleading evidences. Furthermore, the same results of studies in the literature appear conflicting. Aim of this work is to evaluate the role of imaging through an extensive literature review but focusing on 18-fluorine fluorodeoxyglucose positron emission tomography combined with computed tomography (18F-FDG-PET/CT) in order to assess the limits and future perspectives of solitary pulmonary nodule characterization in early detection of lung cancer. Key messages Detection of solitary pulmonary nodules has increased. Management of solitary pulmonary nodules is still debated. Future perspectives of early solitary pulmonary nodule characterization.
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Affiliation(s)
- Duilio Divisi
- a Department of Thoracic Surgery , University of L'Aquila, "G. Mazzini" Hospital , Teramo , Italy
| | - Mirko Barone
- a Department of Thoracic Surgery , University of L'Aquila, "G. Mazzini" Hospital , Teramo , Italy
| | - Gino Zaccagna
- a Department of Thoracic Surgery , University of L'Aquila, "G. Mazzini" Hospital , Teramo , Italy
| | - Roberto Crisci
- a Department of Thoracic Surgery , University of L'Aquila, "G. Mazzini" Hospital , Teramo , Italy
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17
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Quantitative comparison between regularized time-of-flight and OSEM PET reconstructions for small 18F-FDG-avid lesions. Nucl Med Commun 2017; 38:529-536. [DOI: 10.1097/mnm.0000000000000670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Riegler G, Karanikas G, Rausch I, Hirtl A, El-Rabadi K, Marik W, Pivec C, Weber M, Prosch H, Mayerhoefer M. Influence of PET reconstruction technique and matrix size on qualitative and quantitative assessment of lung lesions on [18F]-FDG-PET: A prospective study in 37 cancer patients. Eur J Radiol 2017; 90:20-26. [PMID: 28583635 DOI: 10.1016/j.ejrad.2017.02.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 02/09/2017] [Accepted: 02/15/2017] [Indexed: 12/18/2022]
Abstract
PURPOSE To evaluate the influence of point spread function (PSF)-based reconstruction and matrix size for PET on (1) lung lesion detection and (2) standardized uptake values (SUV). METHODS This prospective study included oncological patients who underwent [18F]-FDG-PET/CT for staging. PET data were reconstructed with a 2D ordered subset expectation maximization (OSEM) algorithm, and a 2D PSF-based algorithm (TrueX), separately with two matrix sizes (168×168 and 336×336). The four PET reconstructions (TrueX-168; OSEM-168; TrueX-336; and OSEM-336) were read independently by two raters, and PET-positive lung lesions were recorded. Blinded to the PET findings, a third independent rater assessed lung lesions with diameters of >4mm on CT. Subsequently, PET and CT were reviewed side-by side in consensus. Multi-factorial logistic regression analyses and two-way repeated measures analyses of variance (ANOVA) were performed. RESULTS Thirty-seven patients with 206 lung lesions were included. Lesion-based PET sensitivities differed significantly between reconstruction algorithms (P<0.001) and between reconstruction matrices (P=0.022). Sensitivities were 94.2% and 88.3% for TrueX-336; 88.3% and 85.9% for TrueX-168; 67.8% and 66.3% for OSEM-336; and 67.0% and 67.9% for OSEM-168; for rater 1 and rater 2, respectively. SUVmax and SUVmean were significantly higher for images reconstructed with 336×336 matrices than for those reconstructed with 168×168 matrices (P<0.001). CONCLUSION Our results demonstrate that PSF-based PET reconstruction, and, to a lesser degree, higher matrix size, improve detection of metabolically active lung lesions. However, PSF-based PET reconstructions and larger matrix sizes lead to higher SUVs, which may be a concern when PET data from different institutions are compared.
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Affiliation(s)
- Georg Riegler
- Medical University of Vienna, Department of Biomedical Imaging and Image-guided Therapy, Währingergürtel 18-20, 1090 Vienna, Austria.
| | - Georgios Karanikas
- Medical University of Vienna, Department of Biomedical Imaging and Image-guided Therapy, Währingergürtel 18-20, 1090 Vienna, Austria
| | - Ivo Rausch
- Medical University of Vienna, Center for Medical Physics and Biomedical Engineering, Währingergürtel 18-20, 1090 Vienna, Austria
| | - Albert Hirtl
- Medical University of Vienna, Center for Medical Physics and Biomedical Engineering, Währingergürtel 18-20, 1090 Vienna, Austria
| | - Karem El-Rabadi
- Medical University of Vienna, Department of Biomedical Imaging and Image-guided Therapy, Währingergürtel 18-20, 1090 Vienna, Austria
| | - Wolfgang Marik
- Medical University of Vienna, Department of Biomedical Imaging and Image-guided Therapy, Währingergürtel 18-20, 1090 Vienna, Austria
| | - Christopher Pivec
- Medical University of Vienna, Department of Biomedical Imaging and Image-guided Therapy, Währingergürtel 18-20, 1090 Vienna, Austria
| | - Michael Weber
- Medical University of Vienna, Department of Biomedical Imaging and Image-guided Therapy, Währingergürtel 18-20, 1090 Vienna, Austria
| | - Helmut Prosch
- Medical University of Vienna, Department of Biomedical Imaging and Image-guided Therapy, Währingergürtel 18-20, 1090 Vienna, Austria
| | - Marius Mayerhoefer
- Medical University of Vienna, Department of Biomedical Imaging and Image-guided Therapy, Währingergürtel 18-20, 1090 Vienna, Austria
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19
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Wang SY, Chen G, Luo DL, Shao D, Liu ET, Sun T, Wang SX. 18F-FDG PET/CT and contrast-enhanced CT findings of pulmonary cryptococcosis. Eur J Radiol 2017; 89:140-148. [PMID: 28267531 DOI: 10.1016/j.ejrad.2017.02.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 01/31/2017] [Accepted: 02/01/2017] [Indexed: 12/15/2022]
Abstract
PURPOSE Pulmonary cryptococcosis is an uncommon cause of pulmonary nodules in non-AIDS patients. This study reports the 18F-fluorodeoxyglucose-positron emission tomography (18F-FDG PET/CT) and contrast-enhanced CT (CE-CT) findings of 42 patients with pulmonary cryptococcosis. MATERIALS AND METHODS A retrospective review of the 18F-FDG PET/CT and CE-CT findings of 42 patients with histologically proven pulmonary cryptococcosis was conducted. All patients underwent PET/CT and CE-CT in the same session. The CT diagnosis was based on the location, morphological features, and enhancement of lesions. The PET/CT findings were recorded, and clinical data and surgical and histopathological findings were collected. RESULTS The results of the PET scans revealed that 37 (88%) of 42 patients showed higher FDG uptake, and 5 (12%) patients demonstrated lower FDG uptake than the mediastinal blood pool. The maximum standardized uptake value (SUV) of pulmonary cryptococcosis ranged from 1.4 to 13.0 (average: 5.7±3.3, median 4.9). A single nodular pattern was the most prevalent pattern observed and was found in 29 (69%) patients. This pattern was followed by scattered nodular (n=4, 10%), clustered nodular (n=3, 7%), mass-like (n=3, 7%), and bronchopneumonic (n=3, 7%) patterns. The most frequent pattern of immunocompetent patients was the single nodular pattern (29 of 33, 88%). Immunocompromised patients most frequently pattern exhibited mass-like (3 of 9, 33%) and bronchopneumonic (3 of 9, 33%) patterns. CONCLUSION Pulmonary cryptococcosis most commonly appears as single nodules in immunocompetent patients. Mass-like and bronchopneumonic patterns were common in immunocompromised patients. In 88% of patients, lung lesions showed high FDG uptake, thus mimicking a possible malignant condition.
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Affiliation(s)
- Si-Yun Wang
- Department of PET Center, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, PR China.
| | - Gang Chen
- Department of Thoracic Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, PR China.
| | - Dong-Lan Luo
- Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, PR China.
| | - Dan Shao
- Department of PET Center, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, PR China.
| | - En-Tao Liu
- Department of PET Center, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, PR China.
| | - Taotao Sun
- Department of PET Center, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, PR China.
| | - Shu-Xia Wang
- Department of PET Center, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, PR China.
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20
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Diagnostic value of 18F-FDG-PET/CT for the evaluation of solitary pulmonary nodules. Nucl Med Commun 2017; 38:67-75. [DOI: 10.1097/mnm.0000000000000605] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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21
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Clinical utility of F-18 FDG PET-CT in the initial evaluation of lung cancer. Eur J Nucl Med Mol Imaging 2016; 43:2084-97. [PMID: 27164899 DOI: 10.1007/s00259-016-3407-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 04/26/2016] [Indexed: 12/19/2022]
Abstract
PURPOSE Positron emission tomography-computed tomography (PET-CT) is a resource-demanding imaging modality with increasing popularity in the workup of patients with suspected or proven lung cancer. METHODS To review the clinical usefulness of this imaging modality in the diagnosis, staging, and pre-operative evaluation, we conducted a systematic literature search, review, and quality assessment using the rapid evidence assessment toolkit and the Oxford Centre for Evidence-Based Medicine methodology. The literature search resulted in 4,208 records including 918 reviews, of which 139 met the predefined criteria and were read in full to identify relevant original articles on F-18 FDG PET-CT (1) in the evaluation of solitary pulmonary nodules (n = 14), (2) in curative-intent treatment trials (n = 9), and (3) in planning of invasive procedures (n = 18). RESULTS We found the following important results from the literature review: 1) PET-CT can rule out malignancy in most solitary pulmonary nodules due to high sensitivity (recommendation level A). 2) PET-CT reduces the number of futile treatment trials (recommendation level A). 3) The sensitivity of PET-CT in general is insufficient to rule out mediastinal lymph node metastasis (recommendation level A). CONCLUSIONS ᅟ 1) With few exceptions, solitary pulmonary nodules can safely be considered benign if the PET-CT scan is negative. Exceptions consist of small (<1 cm) and non-solid, solitary pulmonary nodules. These abnormalities should be followed up by CT in a structured programme. 2) No curative-intent treatment should be commenced until a PET-CT scan has excluded occult distant metastases. 3) In general, lymph node metastasis in the mediastinum cannot be ruled out on the basis of a negative PET-CT, and confirmative invasive staging should be performed in most patients before mediastinal metastasis is confirmed or ruled out.
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22
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Mosmann MP, Borba MA, de Macedo FPN, Liguori ADAL, Villarim Neto A, de Lima KC. Solitary pulmonary nodule and (18)F-FDG PET/CT. Part 2: accuracy, cost-effectiveness, and current recommendations. Radiol Bras 2016; 49:104-11. [PMID: 27141133 PMCID: PMC4851481 DOI: 10.1590/0100-3984.2014.0087] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
A solitary pulmonary nodule is a common, often incidental, radiographic finding. The investigation and differential diagnosis of solitary pulmonary nodules remain complex, because there are overlaps between the characteristics of benign and malignant processes. There are currently many strategies for evaluating solitary pulmonary nodules. The main objective is to identify benign lesions, in order to avoid exposing patients to the risks of invasive methods, and to detect cases of lung cancer accurately, in order to avoid delaying potentially curative treatment. The focus of this study was to review the evaluation of solitary pulmonary nodules, to discuss the current role of (18)F-fluorodeoxyglucose positron-emission tomography, addressing its accuracy and cost-effectiveness, and to detail the current recommendations for the examination in this scenario.
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Affiliation(s)
- Marcos Pretto Mosmann
- MD, MSc, Nuclear Medicine Physician at Liga Norte-Riograndense Contra o Câncer, Natal, RN, Brazil
| | | | | | | | - Arthur Villarim Neto
- PhD, Nuclear Medicine Physician at Liga Norte-Riograndense Contra o Câncer, Natal, RN, Brazil
| | - Kenio Costa de Lima
- Post Doc Fellow, Professor, Programa de Pós-Graduação em Saúde Coletiva - Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brazil
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23
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Garcia-Velloso MJ, Bastarrika G, de-Torres JP, Lozano MD, Sanchez-Salcedo P, Sancho L, Nuñez-Cordoba JM, Campo A, Alcaide AB, Torre W, Richter JA, Zulueta JJ. Assessment of indeterminate pulmonary nodules detected in lung cancer screening: Diagnostic accuracy of FDG PET/CT. Lung Cancer 2016; 97:81-6. [PMID: 27237032 DOI: 10.1016/j.lungcan.2016.04.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 04/26/2016] [Accepted: 04/30/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND A major drawback of lung cancer screening programs is the high frequency of false-positive findings on computed tomography (CT). We investigated the accuracy of selective 2-[fluorine-18]-fluoro-2-deoxy-d-glucose (FDG) Positron Emission Tomography/Computed Tomography (PET/CT) scan in assessing radiologically indeterminate lung nodules detected in lung cancer screening. METHODS FDG PET/CT was performed to characterize 64 baseline lung nodules >10mm and 36 incidence nodules detected on low-dose CT screening in asymptomatic current or former smokers (83 men, age range 40-83 years) at high risk for lung cancer. CT images were acquired without intravenous contrast. Nodules were analyzed by size, density, and metabolic activity and visual scored on a 5-point scale for FDG uptake. Nodules were classified as negative for malignancy when no FDG uptake was observed, or positive when focal uptake was observed in the visual analysis, and the maximum standardized uptake value (SUVmax) was measured. Final diagnosis was based on histopathological evaluation or at least 24 months of follow-up. RESULTS A total of 100 nodules were included. The prevalence of lung cancer was 1%. The sensitivity, specificity, NPV and PPV of visual analysis to detect malignancy were 84%, 95%, 91%, and 91%, respectively, with an accuracy of 91% (AUC 0.893). FDG PET/CT accurately detected 31 malignant tumors (diameters 9-42mm, SUVmax range 0.6-14.2) and was falsely negative in 6 patients. With SUVmax thresholds for malignancy of 1.5, 2, and 2.5, specificity was 97% but sensitivity decreased to 65%, 49%, and 46% respectively, and accuracy decreased to 85%, 79%, and 78% respectively (AUC 0.872). CONCLUSIONS The visual analysis of FDG PET/CT scan is highly accurate in characterizing indeterminate pulmonary nodules detected in lung cancer screening with low-dose CT. Semi-quantitative analysis does not improve the accuracy of FDG PET/CT over that obtained with a qualitative method for lung nodule characterization.
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Affiliation(s)
| | - Gorka Bastarrika
- Department of Radiology, Clinica Universidad de Navarra, Pamplona, Spain
| | - Juan P de-Torres
- Department of Pulmonology, Clinica Universidad de Navarra, Pamplona, Spain
| | - Maria D Lozano
- Department of Pathology, Clinica Universidad de Navarra, Pamplona, Spain
| | | | - Lidia Sancho
- Department of Nuclear Medicine, Clinica Universidad de Navarra, Pamplona, Spain
| | - Jorge M Nuñez-Cordoba
- Division of Biostatistics, Research Support Service, Central Clinical Trials Unit, Clinica Universidad de Navarra, Department of Preventive Medicine and Public Health, Medical School, University of Navarra, Pamplona, Spain
| | - Arantza Campo
- Department of Pulmonology, Clinica Universidad de Navarra, Pamplona, Spain
| | - Ana B Alcaide
- Department of Pulmonology, Clinica Universidad de Navarra, Pamplona, Spain
| | - Wenceslao Torre
- Department of Thoracic Surgery, Clinica Universidad de Navarra, Pamplona, Spain
| | - Jose A Richter
- Department of Nuclear Medicine, Clinica Universidad de Navarra, Pamplona, Spain
| | - Javier J Zulueta
- Department of Pulmonology, Clinica Universidad de Navarra, Pamplona, Spain
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24
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Evaluation of Time-Phase Effect on 18F-FDG PET/CT Delineation Methods for Treatment Planning of Nasopharyngeal Carcinoma. Clin Nucl Med 2016; 41:354-61. [DOI: 10.1097/rlu.0000000000001161] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Calcagni ML, Taralli S, Cardillo G, Graziano P, Ialongo P, Mattoli MV, Di Franco D, Caldarella C, Carleo F, Indovina L, Giordano A. Diagnostic Performance of 18F-Fluorodeoxyglucose in 162 Small Pulmonary Nodules Incidentally Detected in Subjects Without a History of Malignancy. Ann Thorac Surg 2016; 101:1303-9. [DOI: 10.1016/j.athoracsur.2015.10.072] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 09/14/2015] [Accepted: 10/26/2015] [Indexed: 02/09/2023]
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26
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Teoh EJ, McGowan DR, Bradley KM, Belcher E, Black E, Gleeson FV. Novel penalised likelihood reconstruction of PET in the assessment of histologically verified small pulmonary nodules. Eur Radiol 2016; 26:576-84. [PMID: 25991490 PMCID: PMC4551414 DOI: 10.1007/s00330-015-3832-y] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 04/20/2015] [Accepted: 04/28/2015] [Indexed: 11/23/2022]
Abstract
OBJECTIVES Investigate the effect of a novel Bayesian penalised likelihood (BPL) reconstruction algorithm on analysis of pulmonary nodules examined with 18F-FDG PET/CT, and to determine its effect on small, sub-10-mm nodules. METHODS 18F-FDG PET/CTs performed for nodule evaluation in 104 patients (121 nodules) were retrospectively reconstructed using the new algorithm, and compared to time-of-flight ordered subset expectation maximisation (OSEM) reconstruction. Nodule and background parameters were analysed semi-quantitatively and visually. RESULTS BPL compared to OSEM resulted in statistically significant increases in nodule SUVmax (mean 5.3 to 8.1, p < 0.00001), signal-to-background (mean 3.6 to 5.3, p < 0.00001) and signal-to-noise (mean 24 to 41, p < 0.00001). Mean percentage increase in SUVmax (%ΔSUVmax) was significantly higher in nodules ≤10 mm (n = 31, mean 73%) compared to >10 mm (n = 90, mean 42 %) (p = 0.025). Increase in signal-to-noise was higher in nodules ≤10 mm (224%, mean 12 to 27) compared to >10 mm (165%, mean 28 to 46). When applying optimum SUVmax thresholds for detecting malignancy, the sensitivity and accuracy increased using BPL, with the greatest improvements in nodules ≤10 mm. CONCLUSION BPL results in a significant increase in signal-to-background and signal-to-noise compared to OSEM. When semi-quantitative analyses to diagnose malignancy are applied, higher SUVmax thresholds may be warranted owing to the SUVmax increase compared to OSEM. KEY POINTS • Novel Bayesian penalised likelihood PET reconstruction was applied for lung nodule evaluation. • This was compared to current standard of care OSEM reconstruction. • The novel reconstruction generated significant increases in lung nodule signal-to-background and signal-to-noise. • These increases were highest in small, sub-10-mm pulmonary nodules. • Higher SUV max thresholds may be warranted when using semi-quantitative analyses to diagnose malignancy.
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Affiliation(s)
- Eugene J Teoh
- Department of Radiology, Churchill Hospital, Oxford University Hospitals NHS Trust, Old Road, Headington, Oxford, OX3 7LE, UK.
- Department of Oncology, University of Oxford, Oxford, OX3 7DQ, UK.
| | - Daniel R McGowan
- Department of Oncology, University of Oxford, Oxford, OX3 7DQ, UK
- Radiation Physics and Protection, Churchill Hospital, Oxford University Hospitals NHS Trust, Old Road, Oxford, OX3 7LE, UK
| | - Kevin M Bradley
- Department of Radiology, Churchill Hospital, Oxford University Hospitals NHS Trust, Old Road, Headington, Oxford, OX3 7LE, UK
| | - Elizabeth Belcher
- Department of Thoracic Surgery, John Radcliffe Hospital, Oxford University Hospitals NHS Trust, Headley Way, Oxford, OX3 7DU, UK
| | - Edward Black
- Department of Thoracic Surgery, John Radcliffe Hospital, Oxford University Hospitals NHS Trust, Headley Way, Oxford, OX3 7DU, UK
| | - Fergus V Gleeson
- Department of Radiology, Churchill Hospital, Oxford University Hospitals NHS Trust, Old Road, Headington, Oxford, OX3 7LE, UK
- Department of Oncology, University of Oxford, Oxford, OX3 7DQ, UK
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27
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Callister MEJ, Baldwin DR, Akram AR, Barnard S, Cane P, Draffan J, Franks K, Gleeson F, Graham R, Malhotra P, Prokop M, Rodger K, Subesinghe M, Waller D, Woolhouse I. British Thoracic Society guidelines for the investigation and management of pulmonary nodules. Thorax 2015; 70 Suppl 2:ii1-ii54. [PMID: 26082159 DOI: 10.1136/thoraxjnl-2015-207168] [Citation(s) in RCA: 545] [Impact Index Per Article: 60.6] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- M E J Callister
- Department of Respiratory Medicine, Leeds Teaching Hospitals, Leeds, UK
| | - D R Baldwin
- Nottingham University Hospitals, Nottingham, UK
| | - A R Akram
- Royal Infirmary of Edinburgh, Edinburgh, UK
| | - S Barnard
- Department of Cardiothoracic Surgery, Freeman Hospital, Newcastle, UK
| | - P Cane
- Department of Histopathology, St Thomas' Hospital, London, UK
| | - J Draffan
- University Hospital of North Tees, Stockton on Tees, UK
| | - K Franks
- Clinical Oncology, St James's Institute of Oncology, Leeds, UK
| | - F Gleeson
- Department of Radiology, Oxford University Hospitals NHS Trust, Oxford, UK
| | | | - P Malhotra
- St Helens and Knowsley Teaching Hospitals NHS Trust, UK
| | - M Prokop
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, Netherlands
| | - K Rodger
- Respiratory Medicine, St James's University Hospital, Leeds, UK
| | - M Subesinghe
- Department of Radiology, Churchill Hospital, Oxford, UK
| | - D Waller
- Department of Thoracic Surgery, Glenfield Hospital, Leicester, UK
| | - I Woolhouse
- Department of Respiratory Medicine, University Hospitals of Birmingham, Birmingham, UK
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28
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Respiratory-gated imaging in metabolic evaluation of small solitary pulmonary nodules. Nucl Med Commun 2015; 36:722-7. [DOI: 10.1097/mnm.0000000000000311] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Harzheim D, Eberhardt R, Hoffmann H, Herth FJF. The Solitary Pulmonary Nodule. Respiration 2015; 90:160-72. [PMID: 26138915 DOI: 10.1159/000430996] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 04/16/2015] [Indexed: 11/19/2022] Open
Abstract
Due to the high etiological diversity and the potential for malignancy, pulmonary nodules represent a clinical challenge, becoming increasingly frequent as the number of CT examinations rises. The topic gains even more importance as clear evidence for the effectiveness of CT screening was provided by the National Lung Screening Trial (NLST). Yet, the results were tempered by the high false-positive rate and the requirement of performing further diagnostic procedures. The management of those detected solitary pulmonary nodules is currently based on the individuals' risk of developing lung cancer, the pulmonary nodule characteristics and the capability of diagnostic and therapeutic approaches.
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Affiliation(s)
- Dominik Harzheim
- Thoraxklinik am Universitätsklinikum Heidelberg, Heidelberg, Germany
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Li W, Pang H, Liu Q, Zhou J. The role of ¹⁸F-FDG PET or ¹⁸F-FDG-PET/CT in the evaluation of solitary pulmonary nodules. Eur J Radiol 2015; 84:2032-7. [PMID: 26094866 DOI: 10.1016/j.ejrad.2015.06.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 06/02/2015] [Accepted: 06/08/2015] [Indexed: 12/12/2022]
Abstract
Even with the recent advance in diagnostic tools and techniques, solitary pulmonary nodules (SPNs) remains a major clinical challenge for all doctors involved in their study. There are a wide range of diagnoses of benign and malignant lesions that can manifest as SPNs. Positron emission tomography (PET) or positron emission tomography/computed tomography (PET/CT) makes a great contribution to the diagnosis and differential diagnosis of SPNs due to the high sensitivity of pathological accumulation of (18)F-FDG. Owing to integrates the anatomical morphological and metabolic aspects in a single examination, high sensitivity and the ability to perform whole-body scans, combined PET/CT improving overall diagnosis accuracy.
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Affiliation(s)
- Wenbo Li
- Department of Nuclear Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Hua Pang
- Department of Nuclear Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Qiong Liu
- Department of Nuclear Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Jing Zhou
- Department of Nuclear Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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Natural History of Preoperative Subcentimeter Pulmonary Nodules in Patients With Resectable Pancreatic Adenocarcinoma. Ann Surg 2015; 261:970-5. [DOI: 10.1097/sla.0000000000000719] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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The Evolving Role of Molecular Imaging in Non–Small Cell Lung Cancer Radiotherapy. Semin Radiat Oncol 2015; 25:133-42. [DOI: 10.1016/j.semradonc.2014.12.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Panditaratne N, Slater S, Robertson R. Lung cancer: from screening to post-radical treatment. IMAGING 2014. [DOI: 10.1259/img.20120005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Deppen SA, Blume JD, Kensinger CD, Morgan AM, Aldrich MC, Massion PP, Walker RC, McPheeters ML, Putnam JB, Grogan EL. Accuracy of FDG-PET to diagnose lung cancer in areas with infectious lung disease: a meta-analysis. JAMA 2014; 312:1227-36. [PMID: 25247519 PMCID: PMC4315183 DOI: 10.1001/jama.2014.11488] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
IMPORTANCE Positron emission tomography (PET) combined with fludeoxyglucose F 18 (FDG) is recommended for the noninvasive diagnosis of pulmonary nodules suspicious for lung cancer. In populations with endemic infectious lung disease, FDG-PET may not accurately identify malignant lesions. OBJECTIVES To estimate the diagnostic accuracy of FDG-PET for pulmonary nodules suspicious for lung cancer in regions where infectious lung disease is endemic and compare the test accuracy in regions where infectious lung disease is rare. DATA SOURCES AND STUDY SELECTION Databases of MEDLINE, EMBASE, and the Web of Science were searched from October 1, 2000, through April 28, 2014. Articles reporting information sufficient to calculate sensitivity and specificity of FDG-PET to diagnose lung cancer were included. Only studies that enrolled more than 10 participants with benign and malignant lesions were included. Database searches yielded 1923 articles, of which 257 were assessed for eligibility. Seventy studies were included in the analysis. Studies reported on a total of 8511 nodules; 5105 (60%) were malignant. DATA EXTRACTION AND SYNTHESIS Abstracts meeting eligibility criteria were collected by a research librarian and reviewed by 2 independent reviewers. Hierarchical summary receiver operating characteristic curves were constructed. A random-effects logistic regression model was used to summarize and assess the effect of endemic infectious lung disease on test performance. MAIN OUTCOME AND MEASURES The sensitivity and specificity for FDG-PET test performance. RESULTS Heterogeneity for sensitivity (I2 = 87%) and specificity (I2 = 82%) was observed across studies. The pooled (unadjusted) sensitivity was 89% (95% CI, 86%-91%) and specificity was 75% (95% CI, 71%-79%). There was a 16% lower average adjusted specificity in regions with endemic infectious lung disease (61% [95% CI, 49%-72%]) compared with nonendemic regions (77% [95% CI, 73%-80%]). Lower specificity was observed when the analysis was limited to rigorously conducted and well-controlled studies. In general, sensitivity did not change appreciably by endemic infection status, even after adjusting for relevant factors. CONCLUSIONS AND RELEVANCE The accuracy of FDG-PET for diagnosing lung nodules was extremely heterogeneous. Use of FDG-PET combined with computed tomography was less specific in diagnosing malignancy in populations with endemic infectious lung disease compared with nonendemic regions. These data do not support the use of FDG-PET to diagnose lung cancer in endemic regions unless an institution achieves test performance accuracy similar to that found in nonendemic regions.
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Affiliation(s)
- Stephen A. Deppen
- Veterans Affairs Hospital, Tennessee Valley Healthcare System, Nashville TN
- Department of Thoracic Surgery, Vanderbilt University Medical Center, Nashville TN
| | - Jeffrey D. Blume
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville TN
| | - Clark D. Kensinger
- Department of Surgery, Vanderbilt University Medical Center, Nashville TN
| | - Ashley M. Morgan
- School of Medicine, Vanderbilt University Medical Center, Nashville TN
| | - Melinda C. Aldrich
- Department of Thoracic Surgery, Vanderbilt University Medical Center, Nashville TN
- Department of Medicine, Division of Epidemiology, Vanderbilt University Medical Center, Nashville TN
| | - Pierre P. Massion
- Veterans Affairs Hospital, Tennessee Valley Healthcare System, Nashville TN
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville TN
| | - Ronald C. Walker
- Department of Medical Imaging, Tennessee Valley Healthcare System-Veterans Affairs, Nashville TN
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville TN
| | - Melissa L. McPheeters
- Department of Medicine, Division of Epidemiology, Vanderbilt University Medical Center, Nashville TN
- Department of Medicine, Division of Obstetrics and Gynecology, Vanderbilt University Medical Center, Nashville TN
| | - Joseph B. Putnam
- Department of Thoracic Surgery, Vanderbilt University Medical Center, Nashville TN
| | - Eric L. Grogan
- Veterans Affairs Hospital, Tennessee Valley Healthcare System, Nashville TN
- Department of Thoracic Surgery, Vanderbilt University Medical Center, Nashville TN
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Asija A, Manickam R, Aronow WS, Chandy D. Pulmonary nodule: a comprehensive review and update. Hosp Pract (1995) 2014; 42:7-16. [PMID: 25255402 DOI: 10.3810/hp.2014.08.1125] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The incidental detection of solitary pulmonary nodules and ground-glass nodules has increased substantially with the use of computed tomography as a diagnostic modality and is expected to rise exponentially as lung cancer screening guidelines are more widely implemented by primary care physicians. The lesions should then be classified as low, indeterminate, or high risk for malignancy, depending on the clinical and radiological characteristics. Once classified, these lesions should be evaluated and managed as per expert consensus-based recommendations for performing follow-up computed tomography scans and tissue sampling depending on the pretest probability. When weighing the risks and benefits of further investigations, patient preference and suitability for surgery should be taken into consideration as well.
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Affiliation(s)
- Amit Asija
- Department of Internal Medicine, University of Mississippi, Jackson, MS
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Zhan P, Xie H, Xu C, Hao K, Hou Z, Song Y. Management strategy of solitary pulmonary nodules. J Thorac Dis 2014; 5:824-9. [PMID: 24409361 DOI: 10.3978/j.issn.2072-1439.2013.12.13] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 11/21/2013] [Indexed: 01/06/2023]
Abstract
Solitary pulmonary nodules (SPNs) are increasingly detected with the widespread use of chest computed tomography (CT) scans. The management of patients with SPN should begin with estimating the probability of cancer from the patient's clinical risk factors and CT characteristics. The decision-making process need to incorporate the probability of cancer, the potential benefits and harms of surgery, the accuracy of the available diagnostic tests and patient preferences. For patients with a very low probability of cancer, careful observation with serial CT is warranted. For patients in the intermediate range of probabilities, either CT-guided fine-needle aspiration biopsy (FNAB) or positron emission tomography (PET), is recommended. For those with a high probability of cancer, surgical diagnosis is warranted.
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Affiliation(s)
- Ping Zhan
- Department of Respiratory Medicine, Nanjing Chest Hospital, Nanjing 210029, China; ; Nanjing Clinical Center of Respiratory Diseases, Nanjing 210029, China
| | - Haiyan Xie
- Department of Respiratory Medicine, Nanjing Chest Hospital, Nanjing 210029, China; ; Nanjing Clinical Center of Respiratory Diseases, Nanjing 210029, China
| | - Chunhua Xu
- Department of Respiratory Medicine, Nanjing Chest Hospital, Nanjing 210029, China; ; Nanjing Clinical Center of Respiratory Diseases, Nanjing 210029, China
| | - Keke Hao
- Department of Respiratory Medicine, Nanjing Chest Hospital, Nanjing 210029, China; ; Nanjing Clinical Center of Respiratory Diseases, Nanjing 210029, China
| | - Zhibo Hou
- Department of Respiratory Medicine, Nanjing Chest Hospital, Nanjing 210029, China; ; Nanjing Clinical Center of Respiratory Diseases, Nanjing 210029, China
| | - Yong Song
- Nanjing Clinical Center of Respiratory Diseases, Nanjing 210029, China; ; Department of Respiratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
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Sayyouh M, Vummidi DR, Kazerooni EA. Evaluation and management of pulmonary nodules: state-of-the-art and future perspectives. ACTA ACUST UNITED AC 2014; 7:629-44. [PMID: 24175679 DOI: 10.1517/17530059.2013.858117] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION The imaging evaluation of pulmonary nodules, often incidentally detected on imaging examinations performed for other clinical reasons, is a frequently encountered clinical circumstance. With advances in imaging modalities, both the detection and characterization of pulmonary nodules continue to evolve and improve. AREAS COVERED This article will review the imaging modalities used to detect and diagnose benign and malignant pulmonary nodules, with a focus on computed tomography (CT), which continues to be the mainstay for evaluation. The authors discuss recent advances in the lung nodule management, and an algorithm for the management of indeterminate pulmonary nodules. EXPERT OPINION There are set of criteria that define a benign nodule, the most important of which are the lack of temporal change for 2 years or more, and certain benign imaging criteria, including specific patterns of calcification or the presence of fat. Although some indeterminate pulmonary nodules are immediately actionable, generally those approaching 1 cm or larger in diameter, at which size the diagnostic accuracy of tools such as positron emission tomography (PET)/CT, single photon emission CT (SPECT) and biopsy techniques are sufficient to warrant their use. The majority of indeterminate pulmonary nodules are under 1 cm, for which serial CT examinations through at least 2 years for solid nodules and 3 years for ground-glass nodules, are used to demonstrate either benign biologic behavior or otherwise. The management of incidental pulmonary nodules involves a multidisciplinary approach in which radiology plays a pivotal role. Newer imaging and postprocessing techniques have made this a more accurate technique eliminating ambiguity and unnecessary follow-up.
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Affiliation(s)
- Mohamed Sayyouh
- University of Michigan Health System, Division of Cardiothoracic Radiology, Department of Radiology , Ann Arbor, MI , USA
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The use of bronchial arteries in the characterization of primary lung cancer: an MDCT study. J Comput Assist Tomogr 2014; 38:169-73. [PMID: 24448502 DOI: 10.1097/rct.0b013e3182aa6753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The purpose of this study was to discuss the use of ipsilateral bronchial artery dilatation when a solitary lung mass is detected on multidetector computed tomography (MDCT). MATERIALS AND METHODS We retrospectively evaluated 55 patients with solitary lung mass. An MDCT scanner was used for the study. Location and the greatest size of the tumor, and ipsilateral bronchial artery caliper (dilated if >2 mm) were noted for each patient. TNM staging of each patient with primary lung cancer was also recorded. Statistical analyses were applied to both groups using SPSS 17.0. χ test was used for the statistical analyses. RESULTS Statistically strong correlation was observed between ipsilateral bronchial artery dilatation and primary lung carcinoma. Among the 11 benign lung masses, only 2 (18%) showed ipsilateral bronchial artery dilatation. But 39 (88.6%) of the 44 primary lung carcinoma patients and 36 (92.3%) of the 39 primary lung carcinoma patients with predominantly extramediastinal (lung) location showed ipsilateral bronchial artery dilatation on MDCT. When only predominantly extramediastinal lesions were taken into account, sensitivity of the study was 92.31%, specificity was 81.82%, positive predictive value was 94.74%, and negative predictive value was 75%. CONCLUSIONS Lesion characterization and accuracy was very high when the only criteria of bronchial artery dilatation are taken into account. Sensitivity and negative predictive value were higher in the patients with extramediastinal lesions.
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Belderbos J, Sonke JJ. State-of-the-art lung cancer radiation therapy. Expert Rev Anticancer Ther 2014; 9:1353-63. [DOI: 10.1586/era.09.118] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Kumar R, Nadig MR, Chauhan A. Positron emission tomography: clinical applications in oncology. Part 1. Expert Rev Anticancer Ther 2014; 5:1079-94. [PMID: 16336099 DOI: 10.1586/14737140.5.6.1079] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Positron emission tomography is a functional diagnostic imaging technique, which can accurately measure in vivo distribution of a radiopharmaceutical with high resolution. The ability of positron emission tomography to study various biologic processes opens up new possibilities for both research and day-to-day clinical use. Positron emission tomography has progressed rapidly from being a research technique in laboratories to a routine clinical imaging modality becoming part of armamentarium for the medical profession. The most widely used radiotracer in positron emission tomography is 18F-fluoro-2-deoxy-D-glucose (FDG), which is an analog of glucose. FDG uptake in cells is directly proportional to glucose metabolism of cells. Since glucose metabolism is increased many fold in malignant tumors, positron emission tomography has a high sensitivity and high negative predictive value. Positron emission tomography with FDG is now the standard of care in initial staging, monitoring the response to therapy and management of lung cancer, colorectal cancer, lymphoma, melanoma, esophageal cancer, head and neck cancer and breast cancer. The aim of this article is to review the clinical applications of positron emission tomography in oncology.
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Affiliation(s)
- Rakesh Kumar
- Department of Nuclear Medicine, All India Institute of Medical Sciences, E-62, Ansari Nagar (East), New Delhi, 110029, India.
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41
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Wang J, Li S, Liu J, Gu Y, Chen P. Multiple pulmonary nodules with high metabolic activity: Potential benefit of multiple nodule biopsies by video-assisted thoracic surgery: A case report. Exp Ther Med 2013; 6:325-328. [PMID: 24137183 PMCID: PMC3786726 DOI: 10.3892/etm.2013.1180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 06/21/2013] [Indexed: 11/26/2022] Open
Abstract
The aim of this study was to assess complex cases of multiple pulmonary nodules (PNs) with high metabolic activity that may have benefited from being managed in a manner outside the formal guidelines. The study describes the case of a patient with multiple highly metabolically-active PNs, where an original diagnosis of lung cancer metastasis was proposed. Following a failed transbronchial lung biopsy (TBLB), multiple nodule biopsies by video-assisted thoracic surgery (VATS) were performed, and a diagnosis of lymphoepithelioma-like carcinoma (LELC; stage IA) and tuberculosis was reached. This case report demonstrated that multiple nodule biopsies by VATS were effective and were able to improve the prognosis without delay.
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Affiliation(s)
- Jinlin Wang
- Departments of Respiratory Medicine ; The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, Guangzhou, Guangdong 510120, P.R. China
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Wang L, Yin X, Wang F, Gu J, Lu L, Wu Q, Shen B, Li XF. The usefulness of combined diagnostic CT and (99m)Tc-octreotide somatostatin receptor SPECT/CT imaging on pulmonary nodule characterization in patients. Cancer Biother Radiopharm 2013; 28:731-6. [PMID: 24094076 DOI: 10.1089/cbr.2013.1482] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
UNLABELLED The objective of this study was to evaluate the clinical value of combination of diagnostic computed tomography (CT) and somatostatin receptor imaging with (99m)Tc-octreotide acetate SPECT/CT in differentiation of benign pulmonary nodules from cancers. METHODS This was a retrospective study, 29 patients with suspected pulmonary neoplasm underwent diagnostic CT and (99m)Tc-octreotide SPECT/CT scans, and the tumor-to-normal tissue tracer value (T/N) for (99m)Tc-octreotide was measured. Diagnosis was confirmed by histological analysis. RESULTS Eighteen of the 29 patients included in this study had lung cancer: 2 with small cell lung cancer and 16 with nonsmall cell lung cancer. The other 11 patients had benign lung lesions: 5 with tuberculosis, 4 with nontuberculosis infection, 1 with hematoma, and 1 with fibroma. (99m)Tc-octreotide uptake (expressed as mean T/N±SD) was significantly higher in lung cancers (2.58±0.91) than benign lesions (1.38±0.79) (p=0.002). Specificity for pulmonary malignant nodule diagnosis was 63.6% for diagnostic CT, 72.7% for somatostatin receptor SPECT/CT imaging, and 81.8% for the combined use of diagnostic CT and somatostatin receptor SPECT/CT imaging. CONCLUSION Somatostatin receptor imaging with (99m)Tc-octreotide SPECT/CT is useful for the differentiation of benign pulmonary nodules from lung cancers, the combination of diagnostic CT and (99m)Tc-octreotide SPECT/CT further increases the specificity of malignant pulmonary nodule detection.
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Affiliation(s)
- Liwei Wang
- 1 Department of Radiology, Nanjing Hospital, Nanjing Medical University , Nanjing, Jiangsu, China
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Patel VK, Naik SK, Naidich DP, Travis WD, Weingarten JA, Lazzaro R, Gutterman DD, Wentowski C, Grosu HB, Raoof S. A practical algorithmic approach to the diagnosis and management of solitary pulmonary nodules: part 1: radiologic characteristics and imaging modalities. Chest 2013; 143:825-839. [PMID: 23460160 DOI: 10.1378/chest.12-0960] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The solitary pulmonary nodule (SPN) is frequently encountered on chest imaging and poses an important diagnostic challenge to clinicians. The differential diagnosis is broad, ranging from benign granulomata and infectious processes to malignancy. Important concepts in the evaluation of SPNs include the definition, morphologic characteristics via appropriate imaging modalities, and the calculation of pretest probability of malignancy. Morphologic differentiation of SPN into solid or subsolid types is important in the choice of follow-up and further management. In this first part of a two-part series, we describe the morphologic characteristics and various imaging modalities available to further characterize SPN. In Part 2, we will describe the determination of pretest probability of malignancy and an algorithmic approach to the diagnosis of SPN.
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Gould MK, Donington J, Lynch WR, Mazzone PJ, Midthun DE, Naidich DP, Wiener RS. Evaluation of individuals with pulmonary nodules: when is it lung cancer? Diagnosis and management of lung cancer, 3rd ed: American College of Chest Physicians evidence-based clinical practice guidelines. Chest 2013; 143:e93S-e120S. [PMID: 23649456 PMCID: PMC3749714 DOI: 10.1378/chest.12-2351] [Citation(s) in RCA: 880] [Impact Index Per Article: 80.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Accepted: 11/30/2012] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES The objective of this article is to update previous evidence-based recommendations for evaluation and management of individuals with solid pulmonary nodules and to generate new recommendations for those with nonsolid nodules. METHODS We updated prior literature reviews, synthesized evidence, and formulated recommendations by using the methods described in the "Methodology for Development of Guidelines for Lung Cancer" in the American College of Chest Physicians Lung Cancer Guidelines, 3rd ed. RESULTS We formulated recommendations for evaluating solid pulmonary nodules that measure > 8 mm in diameter, solid nodules that measure ≤ 8 mm in diameter, and subsolid nodules. The recommendations stress the value of assessing the probability of malignancy, the utility of imaging tests, the need to weigh the benefits and harms of different management strategies (nonsurgical biopsy, surgical resection, and surveillance with chest CT imaging), and the importance of eliciting patient preferences. CONCLUSIONS Individuals with pulmonary nodules should be evaluated and managed by estimating the probability of malignancy, performing imaging tests to better characterize the lesions, evaluating the risks associated with various management alternatives, and eliciting their preferences for management.
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Affiliation(s)
- Michael K Gould
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA.
| | | | - William R Lynch
- Department of Surgery, Section of Thoracic Surgery, University of Michigan, Ann Arbor, MI
| | | | | | | | - Renda Soylemez Wiener
- The Pulmonary Center, Boston University School of Medicine, Boston, MA; Center for Health Quality, Outcomes, and Economic Research, Edith Nourse Rogers Memorial VA Hospital, Bedford, MA
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Sebro R, Aparici CM, Hernandez-Pampaloni M. FDG PET/CT evaluation of pathologically proven pulmonary lesions in an area of high endemic granulomatous disease. Ann Nucl Med 2013; 27:400-5. [PMID: 23400394 PMCID: PMC3642363 DOI: 10.1007/s12149-013-0695-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 01/23/2013] [Indexed: 12/21/2022]
Abstract
Purpose The goal of this study is to assess how reliable the threshold maximum standardized uptake value (maxSUV) of 2.5 on positron emission tomography–computed tomography (PET/CT) is for evaluation of solitary pulmonary lesions in an area of endemic granulomatous disease and to consider other imaging findings that may increase the accuracy of PET/CT. Materials and methods The staging PET/CT of 72 subjects with solitary pulmonary lesions (nodules (less than 3 cm) or masses (greater than 3 cm)) were retrospectively reviewed. Pathology proven diagnosis from tissue samples was used as the gold standard. Logistic regression was used to assess whether the subject’s age, maxSUV, size of lesion, presence of emphysema, or evidence of granulomatous disease was predictive of malignancy. Results Malignant lesions were identified in 84.7 % (61/72) of the 72 subjects. A threshold maxSUV of 2.5 had a sensitivity of 95.1 % (58/61), specificity of 45.5 % (5/11), positive predictive value of 90.6 % (58/64), negative predictive value of 62.5 % (5/8) and an accuracy of 87.5 % (63/72). The false negative rate was 4.9 %, and the false positive rate was 54.5 %. All 3 false negatives were less than or equal to 1.0 cm; however, false positives ranged from 1.1 to 5.6 cm. The false negatives had a mean (SD) maxSUV of 2.0 (0.4), whereas the false positives had a mean (SD) maxSUV of 5.6 (3.0). Emphysema was associated with 1.1 higher odds of malignancy, and evidence of granulomatous disease was associated with 0.34 lower odds of benign disease, however, neither was statistically significant (p = 0.92 and p = 0.31, respectively). Higher maxSUV was significantly associated with increased risk of malignancy (p = 8.3 × 10−3). Older age and larger size of lesion were borderline associated with increased risk of malignancy (p = 0.05 and p = 0.07, respectively). Conclusion In an area of high endemic granulomatous disease, the PET/CT threshold maxSUV of 2.5 retains a high sensitivity (95.1 %) and positive predictive value (90.6 %) for differentiating benign from malignant pulmonary lesions; however, the specificity (45.5) and negative predictive value (62.5) decrease due to increased false positives. The presence of emphysema and absence of evidence of granulomatous disease increases the probability that a pulmonary lesion is malignant; however, these were not statistically significant.
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Affiliation(s)
- Ronnie Sebro
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, 505 Parnassus Avenue, M-391, San Francisco, CA 94143, USA.
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Computer-aided diagnosis systems for lung cancer: challenges and methodologies. Int J Biomed Imaging 2013; 2013:942353. [PMID: 23431282 PMCID: PMC3570946 DOI: 10.1155/2013/942353] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Accepted: 11/20/2012] [Indexed: 11/24/2022] Open
Abstract
This paper overviews one of the most important, interesting, and challenging problems in oncology, the problem of lung cancer diagnosis. Developing an effective computer-aided diagnosis (CAD) system for lung cancer is of great clinical importance and can increase the patient's chance of survival. For this reason, CAD systems for lung cancer have been investigated in a huge number of research studies. A typical CAD system for lung cancer diagnosis is composed of four main processing steps: segmentation of the lung fields, detection of nodules inside the lung fields, segmentation of the detected nodules, and diagnosis of the nodules as benign or malignant. This paper overviews the current state-of-the-art techniques that have been developed to implement each of these CAD processing steps. For each technique, various aspects of technical issues, implemented methodologies, training and testing databases, and validation methods, as well as achieved performances, are described. In addition, the paper addresses several challenges that researchers face in each implementation step and outlines the strengths and drawbacks of the existing approaches for lung cancer CAD systems.
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Harders SW, Madsen HH, Hjorthaug K, Arveschoug AK, Rasmussen TR, Meldgaard P, Andersen JB, Pilegaard HK, Hager H, Rehling M, Rasmussen F. Characterization of pulmonary lesions in patients with suspected lung cancer: computed tomography versus [¹⁸F] fluorodeoxyglucose-positron emission tomography/computed tomography. Cancer Imaging 2012; 12:437-46. [PMID: 23092816 PMCID: PMC3478790 DOI: 10.1102/1470-7330.2012.0035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Pulmonary nodules are of high clinical importance, given they may prove to be an early manifestation of lung cancer. Pulmonary nodules are small, focal, radiographic opacities that may be solitary or multiple. A solitary pulmonary nodule is a single, small (≤30 mm in diameter) opacity. Larger opacities are called masses and are often malignant. As imaging techniques improve and more nodules are detected, the optimal management of pulmonary nodules remains unclear. However, the question of malignancy of any given nodule remains the same. A standard contrast-enhanced computed tomography (CT) scan is often the first examination, followed by a number of other examinations. The purpose of this study was to examine the clinical feasibility of CT versus integrated [18F]fluorodeoxyglucose-positron emission tomography (PET)/low-dose CT scan in patients with suspected lung cancer and pulmonary lesions on CT. All results were controlled for reproducibility. We found that when used early in the work-up of the lesions, CT raised the prevalence of lung cancer in the population to the point where further diagnostic imaging examination could be considered futile. We also found that the overall diagnostic accuracy, as well as the classification probabilities and predictive values of the two modalities were not significantly different; the reproducibility of these results was substantial.
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Abstract
PURPOSE OF REVIEW The purpose of this review is to examine the literature on lung cancer screening with an emphasis on the prevalence of cancer in screen-detected nodules. On the basis of the evidence, we will then develop a practical approach to screen-detected lung nodules. RECENT FINDINGS The first large randomized controlled trial using low-dose computed tomography (LDCT) found that persons undergoing three annual screening examinations with LDCT had a 20% relative reduction in lung cancer mortality as compared with those screened with annual chest X-rays. The probability of cancer in screen-detected nodules depends on their size and whether the nodules are detected on prevalence or incidence screens. The probability of cancer in screen-detected nodules ranges from 2.4 to 5.2%. Management strategies for screen-detected nodules that have been used successfully include careful observation using serial CT imaging, CT-guided fine needle biopsy, and surgery in carefully selected cases. The most frequently used strategies involve serial CT imaging and CT-guided biopsy for larger nodules and those that demonstrate growth on follow-up. SUMMARY There is now evidence that LDCT in carefully selected high-risk populations can lead to better outcomes but the cost effectiveness of mass screening with LDCT is still unknown. Only patients at high risk for cancer should be screened.
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Calcagni ML, Taralli S, Maggi F, Rufini V, Treglia G, Leccisotti L, Bonomo L, Giordano A. ¹⁸F-fluoro-deoxy-glucose focal uptake in very small pulmonary nodules: fact or artifact? Case reports. World J Surg Oncol 2012; 10:71. [PMID: 22540935 PMCID: PMC3488528 DOI: 10.1186/1477-7819-10-71] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Accepted: 04/28/2012] [Indexed: 11/12/2022] Open
Abstract
Background 18F-fluoro-deoxy-glucose (18 F-FDG) positron emission tomography integrated/combined with computed tomography (PET-CT) provides the best diagnostic results in the metabolic characterization of undetermined solid pulmonary nodules. The diagnostic performance of 18 F-FDG is similar for nodules measuring at least 1 cm and for larger masses, but few data exist for nodules smaller than 1 cm. Case presentation We report five cases of oncologic patients showing focal lung 18 F-FDG uptake on PET-CT in nodules smaller than 1 cm. We also discuss the most common causes of 18 F-FDG false-positive and false-negative results in the pulmonary parenchyma. In patient 1, contrast-enhanced CT performed 10 days before PET-CT did not show any abnormality in the site of uptake; in patient 2, high-resolution CT performed 1 month after PET showed a bronchiole filled with dense material interpreted as a mucoid impaction; in patient 3, contrast-enhanced CT performed 15 days before PET-CT did not identify any nodules; in patients 4 and 5, contrast-enhanced CT revealed a nodule smaller than 1 cm which could not be characterized. The 18 F-FDG uptake at follow-up confirmed the malignant nature of pulmonary nodules smaller than 1 cm which were undetectable, misinterpreted, not recognized or undetermined at contrast-enhanced CT. Conclusion In all five oncologic patients, 18 F-FDG was able to metabolically characterize as malignant those nodules smaller than 1 cm, underlining that: 18 F-FDG uptake is not only a function of tumor size but it is strongly related to the tumor biology; functional alterations may precede morphologic abnormalities. In the oncologic population, especially in higher-risk patients, PET can be performed even when the nodules are smaller than 1 cm, because it might give an earlier characterization and, sometimes, could guide in the identification of alterations missed on CT.
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Affiliation(s)
- Maria Lucia Calcagni
- Institute of Nuclear Medicine, Università Cattolica del Sacro Cuore, Largo A, Gemelli, 8, 00168 Rome, Italy.
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Abstract
Integrating current evidence with fundamental concepts from decision analysis suggests that management of patients with pulmonary nodules should begin with estimating the pretest probability of cancer from the patient's clinical risk factors and computed tomography characteristics. Then, the consequences of treatment should be considered, by comparing the benefits of surgery if the patient has lung cancer with the potential harm if the patient does not have cancer. This analysis determines the "treatment threshold," which is the point around which the decision centers. This varies widely among patients depending on their cardiopulmonary reserve, comorbidities, and individual preferences. For patients with a very low probability of cancer, careful observation with serial computed tomography is warranted. For those with a high probability of cancer, surgical diagnosis is warranted. For patients in the intermediate range of probabilities, either computed tomography-guided fine-needle aspiration biopsy or positron emission tomography, possibly followed by computed tomography-guided fine-needle aspiration biopsy, is best. Patient preferences should be considered because the absolute difference in outcome between strategies may be small. The optimal approach to the management of patients with pulmonary nodules is evolving as technologies develop. Areas of uncertainty include quantifying the hazard of delayed diagnosis; determining the optimal duration of follow-up for ground-glass and semisolid opacities; establishing the roles of volumetric imaging, advanced bronchoscopic technologies, and limited surgical resections; and calculating the cost-effectiveness of different strategies.
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Affiliation(s)
- David E Ost
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77002, USA.
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