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Matsuo H, Kitajima K, Kono AK, Kuribayashi K, Kijima T, Hashimoto M, Hasegawa S, Yamakado K, Murakami T. Prognosis prediction of patients with malignant pleural mesothelioma using conditional variational autoencoder on 3D PET images and clinical data. Med Phys 2023; 50:7548-7557. [PMID: 37651615 DOI: 10.1002/mp.16694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 08/02/2023] [Accepted: 08/02/2023] [Indexed: 09/02/2023] Open
Abstract
BACKGROUND Deep learning (DL) has been widely used for diagnosis and prognosis prediction of numerous frequently occurring diseases. Generally, DL models require large datasets to perform accurate and reliable prognosis prediction and avoid overlearning. However, prognosis prediction of rare diseases is still limited owing to the small number of cases, resulting in small datasets. PURPOSE This paper proposes a multimodal DL method to predict the prognosis of patients with malignant pleural mesothelioma (MPM) with a small number of 3D positron emission tomography-computed tomography (PET/CT) images and clinical data. METHODS A 3D convolutional conditional variational autoencoder (3D-CCVAE), which adds a 3D-convolutional layer and conditional VAE to process 3D images, was used for dimensionality reduction of PET images. We developed a two-step model that performs dimensionality reduction using the 3D-CCVAE, which is resistant to overlearning. In the first step, clinical data were input to condition the model and perform dimensionality reduction of PET images, resulting in more efficient dimension reduction. In the second step, a subset of the dimensionally reduced features and clinical data were combined to predict 1-year survival of patients using the random forest classifier. To demonstrate the usefulness of the 3D-CCVAE, we created a model without the conditional mechanism (3D-CVAE), one without the variational mechanism (3D-CCAE), and one without an autoencoder (without AE), and compared their prediction results. We used PET images and clinical data of 520 patients with histologically proven MPM. The data were randomly split in a 2:1 ratio (train : test) and three-fold cross-validation was performed. The models were trained on the training set and evaluated based on the test set results. The area under the receiver operating characteristic curve (AUC) for all models was calculated using their 1-year survival predictions, and the results were compared. RESULTS We obtained AUC values of 0.76 (95% confidence interval [CI], 0.72-0.80) for the 3D-CCVAE model, 0.72 (95% CI, 0.68-0.77) for the 3D-CVAE model, 0.70 (95% CI, 0.66-0.75) for the 3D-CCAE model, and 0.69 (95% CI 0.65-0.74) for the without AE model. The 3D-CCVAE model performed better than the other models (3D-CVAE, p = 0.039; 3D-CCAE, p = 0.0032; and without AE, p = 0.0011). CONCLUSIONS This study demonstrates the usefulness of the 3D-CCVAE in multimodal DL models learned using a small number of datasets. Additionally, it shows that dimensionality reduction via AE can be used to learn a DL model without increasing the overlearning risk. Moreover, the VAE mechanism can overcome the uncertainty of the model parameters that commonly occurs for small datasets, thereby eliminating the risk of overlearning. Additionally, more efficient dimensionality reduction of PET images can be performed by providing clinical data as conditions and ignoring clinical data-related features.
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Affiliation(s)
- Hidetoshi Matsuo
- Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kazuhiro Kitajima
- Department of Radiology, Hyogo Medical University, School of Medicine, Nishinomiya, Hyogo, Japan
| | - Atsushi K Kono
- Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kozo Kuribayashi
- Department of Respiratory Medicine and Hematology, Hyogo Medical University, School of Medicine, Nishinomiya, Hyogo, Japan
| | - Takashi Kijima
- Department of Respiratory Medicine and Hematology, Hyogo Medical University, School of Medicine, Nishinomiya, Hyogo, Japan
| | - Masaki Hashimoto
- Department of Thoracic Surgery, Hyogo Medical University, School of Medicine, Nishinomiya, Hyogo, Japan
| | - Seiki Hasegawa
- Department of Thoracic Surgery, Hyogo Medical University, School of Medicine, Nishinomiya, Hyogo, Japan
| | - Koichiro Yamakado
- Department of Radiology, Hyogo Medical University, School of Medicine, Nishinomiya, Hyogo, Japan
| | - Takamichi Murakami
- Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Japan
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Wei M, Zhang Y, Zhao L, Zhao Z. Development and validation of a radiomics nomogram for diagnosis of malignant pleural effusion. Discov Oncol 2023; 14:213. [PMID: 37999794 PMCID: PMC10673775 DOI: 10.1007/s12672-023-00835-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/21/2023] [Indexed: 11/25/2023] Open
Abstract
OBJECTIVE We aimed to develop a radiomics nomogram based on computed tomography (CT) scan features and high-throughput radiomics features for diagnosis of malignant pleural effusion (MPE). METHODS In this study, 507 eligible patients with PE (207 malignant and 300 benign) were collected retrospectively. Patients were divided into training (n = 355) and validation cohorts (n = 152). Radiomics features were extracted from initial unenhanced CT images. CT scan features of PE were also collected. We used the variance threshold algorithm and least absolute shrinkage and selection operator (LASSO) to select optimal features to build a radiomics model for predicting the nature of PE. Univariate and multivariable logistic regression analyzes were used to identify significant independent factors associated with MPE, which were then included in the radiomics nomogram. RESULTS A total of four CT features were retained as significant independent factors, including massive PE, obstructive atelectasis or pneumonia, pleural thickening > 10 mm, and pulmonary nodules and/or masses. The radiomics nomogram constructed from 13 radiomics parameters and four CT features showed good predictive efficacy in training cohort [area under the curve (AUC) = 0.926, 95% CI 0.894, 0.951] and validation cohort (AUC = 0.916, 95% CI 0.860, 0.955). The calibration curve and decision curve analysis showed that the nomogram helped differentiate MPE from benign pleural effusion (BPE) in clinical practice. CONCLUSION This study presents a nomogram model incorporating CT scan features and radiomics features to help physicians differentiate MPE from BPE.
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Affiliation(s)
- Mingzhu Wei
- Department of Radiology, Shaoxing People's Hospital, Shaoxing, Zhejiang, People's Republic of China.
- Department of Radiology, Shaoxing People's Hospital, No. 568, Zhongxing North Road, Yuecheng District, Shaoxing, 312000, Zhejiang, People's Republic of China.
| | - Yaping Zhang
- Department of Radiology, Shaoxing People's Hospital, Shaoxing, Zhejiang, People's Republic of China
| | - Li Zhao
- Department of Radiology, Shaoxing People's Hospital, Shaoxing, Zhejiang, People's Republic of China
| | - Zhenhua Zhao
- Department of Radiology, Shaoxing People's Hospital, Shaoxing, Zhejiang, People's Republic of China
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Cohen SE, Betancourt J, Soo Hoo GW. Pleural Uptake Patterns in F18Fluorodeoxyglucose-Positron Emission Tomography (FDG-PET) Scans Improve the Identification of Malignant Pleural Effusions. J Clin Med 2023; 12:6977. [PMID: 38002592 PMCID: PMC10672363 DOI: 10.3390/jcm12226977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 10/24/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
BACKGROUND The confirmation of malignant pleural effusions (MPE) requires an invasive procedure. Diagnosis can be difficult and may require repeated thoracentesis or biopsies. F18Fluorodeoxyglucose-Positron Emission Tomography (FDG-PET) can characterize the extent of malignant involvement in areas of increased uptake. Patterns of uptake in the pleura may be sufficient to obviate the need for further invasive procedures. METHODS This is a retrospective review of patients with confirmed malignancy and suspected MPE. Patients who underwent diagnostic thoracentesis with cytology and contemporaneous FDG-PET were identified for analysis. Some underwent confirmatory pleural biopsy. The uptake pattern on FDG-PET underwent blinded review and was categorized based on the pattern of uptake. RESULTS One hundred consecutive patients with confirmed malignancy, suspected MPE and corresponding FDG-PET scans were reviewed. MPE was confirmed in 70 patients with positive pleural fluid cytology or tissue pathology. Of the remaining patients, 15 had negative cytopathology, 14 had atypical cells and 1 had reactive cells. Positive uptake on FDG-PET was noted in 76 patients. The concordance of malignant histology and positive FDG-PET occurred in 58 of 76 patients (76%). Combining histologically confirmed MPE with atypical cytology, positive pleural FDG-PET uptake had a positive predictive value of 91% for MPE. An encasement pattern had a 100% PPV for malignancy. CONCLUSION Positive FDG-PET pleural uptake represents an excellent method to identify MPE, especially in patients with an encasement pattern. This may eliminate the need for additional invasive procedures in some patients, even when initial pleural cytology is negative.
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Affiliation(s)
| | - Jaime Betancourt
- West Los Angeles Veterans Affairs Healthcare Center, VA Greater Los Angeles Healthcare System, Los Angeles, CA 90073, USA; (J.B.); (G.W.S.H.)
- David Geffen School of Medicine at UCLA, Los Angeles, CA 90024, USA
| | - Guy W. Soo Hoo
- West Los Angeles Veterans Affairs Healthcare Center, VA Greater Los Angeles Healthcare System, Los Angeles, CA 90073, USA; (J.B.); (G.W.S.H.)
- David Geffen School of Medicine at UCLA, Los Angeles, CA 90024, USA
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Sharma P, Gupta RK, Anthwal D, Dass M, Yadav R, Behera A, Sethi S, Singhal R, Dhooria S, Aggarwal AN, Haldar S. Evaluation of Mycobacterium tuberculosis derived cell-free DNA using pleural fluid and paired plasma samples for the diagnosis of pleural tuberculosis. Tuberculosis (Edinb) 2023; 142:102369. [PMID: 37536090 DOI: 10.1016/j.tube.2023.102369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/13/2023] [Accepted: 06/25/2023] [Indexed: 08/05/2023]
Abstract
Pleural tuberculosis (pTB) is a grave clinical challenge. A novel cell-free M. tuberculosis DNA (cfM.tb-DNA) probe-based-qPCR assay was developed for the diagnosis of pTB. Total cell-free DNA was extracted from pleural fluid (PF) and paired plasma samples and cfM.tb-DNA was quantified by probe-based qPCR targeting devR (109-bp) gene of M. tuberculosis in patients with pleural effusion. Patient categorization was done using 'Composite-Reference-Standard' formulated for the study. Assay cut-offs were determined from samples in the 'Development set' (n = 17; 'Definite & Probable' pTB; n = 9 and 'Non-TB'; n = 8) by ROC-curve analysis and applied to 'Validation set' (n = 112; 'Definite' pTB; n = 8, 'Probable' pTB; n = 34, 'Possible' pTB; n = 28 and 'Non-TB'; n = 42). cfM.tb-DNA qPCR had a sensitivity of 62.5% (95%CI; 24.4,91.4) in 'Definite' pTB category and 59.5% (95%CI; 43.2,74.3) in 'Definite & Probable' pTB category with 95.2% (95%CI; 83.8,99.4) specificity using PF. In plasma (n = 85), the assay had a sub-optimal sensitivity of 7.6% (95%CI; 0.95,25.1) with 88.2% (95%CI; 72.5,96.7) specificity in 'Definite & Probable' pTB group. Xpert MTB/RIF assay detected only six-samples in the 'Validation set'. Logistic regression analysis indicated that PF-cfM.tb-DNA qPCR provided incremental advantage over existing pTB diagnostic algorithms. To the best of our knowledge, this is the first report describing the utility of cfM.tb-DNA for pTB diagnosis in India.
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Affiliation(s)
- Pratibha Sharma
- Department of Experimental Medicine and Biotechnology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Rakesh Kumar Gupta
- Department of Experimental Medicine and Biotechnology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Divya Anthwal
- Department of Experimental Medicine and Biotechnology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Manisha Dass
- Department of Experimental Medicine and Biotechnology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Rakesh Yadav
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Ashish Behera
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Sunil Sethi
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Ritu Singhal
- Department of Microbiology, National Institute of Tuberculosis and Respiratory Diseases, New Delhi, India
| | - Sahajal Dhooria
- Department of Pulmonary Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Ashutosh Nath Aggarwal
- Department of Pulmonary Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Sagarika Haldar
- Department of Experimental Medicine and Biotechnology, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
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Zhang W, Liu Z, Duan X, Li Y, Shen C, Guo Y, Yang J. Differentiating malignant and benign pleural effusion in patients with lung cancer: an 18F-FDG PET/CT retrospectively study. Front Oncol 2023; 13:1192870. [PMID: 37456249 PMCID: PMC10348711 DOI: 10.3389/fonc.2023.1192870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 06/16/2023] [Indexed: 07/18/2023] Open
Abstract
Rationale To explore the clinical role of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) in differentiating malignant pleural effusion (MPE) from benign pleural effusion (BPE) in patients with lung cancer. Methods Over a 8-year period, we retrospectively reviewed PET/CT data of lung cancer patients with pleural effusion, with 237 participants enrolled for analysis. The nature of pleural effusion was confirmed using pleural cytology or biopsy. MPE versus BPE comparison and multiple regression analysis were performed. Receiver operating characteristic (ROC) curve analysis was used for evaluating the diagnostic performance. Results Of the 237 participants, 170 had MPEs and 67 had BPEs. Compared with BPEs, MPEs had higher pleural SUVmax and thicker pleura and were more common among non-small cell lung cancers, peripheral tumors, and women (p < 0.05). BPEs had larger and higher 18F-FDG uptake thoracic lymph nodes and more complications of pneumonia (p < 0.05) than MPEs. Multiple regression analysis was used to identify the pleural SUVmax (odds ratio, OR = 38.8), sex (OR = 0.033), and mediastinal lymphoid node size (OR = 0.86) as independent risk factors for MPEs. The sensitivity, specificity, and area under the ROC curve (AUC) in the combined ROC curve analysis by using the three factors were 95.3%, 95.5%, and 0.989, respectively. Conclusion 18F-FDG PET/CT integrated imaging is an effective non-invasive method for differential diagnosis of MPE in patients with lung cancer. Pleural SUVmax combined with thoracic lymph nodes and sex has high diagnostic value.
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Affiliation(s)
- Weishan Zhang
- PET/CT Department of the First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Zhe Liu
- Radiology Department of the First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Xiaoyi Duan
- PET/CT Department of the First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Yan Li
- PET/CT Department of the First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Cong Shen
- PET/CT Department of the First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Youmin Guo
- PET/CT Department of the First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Jian Yang
- Radiology Department of the First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
- Department of Biomedical Engineering, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, China
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Ozcelik N, Ozcelik AE, Guner Zirih NM, Selimoglu I, Gumus A. Deep learning for diagnosis of malign pleural effusion on computed tomography images. Clinics (Sao Paulo) 2023; 78:100210. [PMID: 37149920 DOI: 10.1016/j.clinsp.2023.100210] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 04/01/2023] [Accepted: 04/18/2023] [Indexed: 05/09/2023] Open
Abstract
BACKGROUND The pleura is a serous membrane that surrounds the lungs. The visceral surface secretes fluid into the serous cavity and the parietal surface ensures a regular absorption of this fluid. If this balance is disturbed, fluid accumulation occurs in the pleural space called "Pleural Effusion". Today, accurate diagnosis of pleural diseases is becoming more critical, as advances in treatment protocols have contributed positively to prognosis. Our aim is to perform computer-aided numerical analysis of Computed Tomography (CT) images from patients showing pleural effusion images on CT and to examine the prediction of malignant/benign distinction using deep learning by comparing with the cytology results. METHODS The authors classified 408 CT images from 64 patients whose etiology of pleural effusion was investigated using the deep learning method. 378 of the images were used for the training of the system; 15 malignant and 15 benign CT images, which were not included in the training group, were used as the test. RESULTS Among the 30 test images evaluated in the system; 14 of 15 malignant patients and 13 of 15 benign patients were estimated with correct diagnosis (PPD: 93.3%, NPD: 86.67%, Sensitivity: 87.5%, Specificity: 92.86%). CONCLUSION Advances in computer-aided diagnostic analysis of CT images and obtaining a pre-diagnosis of pleural fluid may reduce the need for interventional procedures by guiding physicians about which patients may have malignancies. Thus, it is cost and time-saving in patient management, allowing earlier diagnosis and treatment.
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Affiliation(s)
- Neslihan Ozcelik
- Recep Tayyip Erdogan University, Faculty of Medicine, Training and Research Hospital, Chest Disease, Rize, Turkey.
| | - Ali Erdem Ozcelik
- Recep Tayyip Erdogan University, Engineering and Architecture Faculty, Department of Landscape Architecture (Geomatics Engineer), Rize, Turkey
| | - Nese Merve Guner Zirih
- Recep Tayyip Erdogan University, Faculty of Medicine, Training and Research Hospital, Chest Disease, Rize, Turkey
| | - Inci Selimoglu
- Recep Tayyip Erdogan University, Faculty of Medicine, Training and Research Hospital, Chest Disease, Rize, Turkey
| | - Aziz Gumus
- Recep Tayyip Erdogan University, Faculty of Medicine, Training and Research Hospital, Chest Disease, Rize, Turkey
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Clinical, Laboratory, Histological, Radiological, and Metabolic Features and Prognosis of Malignant Pleural Mesothelioma. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58121874. [PMID: 36557076 PMCID: PMC9785569 DOI: 10.3390/medicina58121874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 12/06/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022]
Abstract
Background: Malignant pleural mesothelioma (MPM) is an aggressive and rare malignant pleural tumor. Methods: MPM patients diagnosed in Beijing Chaoyang Hospital and Beijing Tongren Hospital were the focus of this study. We collected and analyzed the histological, radiological, and metabolic features of MPM patients. At the same time, Cox univariable and multivariable analyses were used to explore the laboratory risk factors affecting the prognosis of MPM patients. Results: A total of 129 MPM patients were included in this study. MPM includes three main histological subtypes: epithelioid, sarcomatoid and biphasic. Among them, epithelial subtypes accounted for the highest proportion. Calretinin, Wilms' tumor gene (WT1), cytokeratin 5/6 (CK5/6), and D2-40 were the most useful mesothelial markers to support a MPM diagnosis. The imaging features of MPM patients are pleural thickening and pleural effusion. In PET-CT, the affected pleura showed obvious high uptake of tracer, and the degree was related to the specific subtype. The median follow-up time was 55.0 (30.0, 94.0) months. A total of 92 (71.3%) patients died during follow-up. The median survival time of patients was 21.0 (9.0, 48.0) months. The Cox multivariable analysis showed that age [hazard ratio (HR), 1.824; 95% confidence interval (CI) 1.159-2.872; p = 0.009; uncorrected], ESR (HR, 2.197; 95% CI 1.318-3.664; p = 0.003; with Bonferroni correction), lymphocytes (HR, 0.436; 95% CI 0.258-0.737; p = 0.002; with Bonferroni correction), platelets (HR, 1.802; 95% CI 1.084-2.997; p = 0.023; uncorrected) and total protein (HR, 0.625; 95% CI 0.394-0.990; p = 0.045; uncorrected) were independent risk factors for prognosis, after adjusting for confounding factors. Conclusions: Age, ESR, lymphocytes, platelets and total protein may be related to the prognosis of MPM patients. Summarizing the histological, radiological, and metabolic features of MPM patients in the two centers can increase clinicians' understanding of this rare tumor.
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Xiang Z, Deng X, He W, Yang Q, Ni L, Dehghan Shasaltaneh M, Maghsoudloo M, Yang G, Wu J, Imani S, Wen Q. Treatment of malignant pleural effusion in non-small cell lung cancer with VEGF-directed therapy. Ann Med 2022; 54:1357-1371. [PMID: 35543207 PMCID: PMC9103356 DOI: 10.1080/07853890.2022.2071977] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Vascular endothelial growth factor (VEGF) is a critical regulator of malignant pleural effusion (MPE) in non-small-cell lung cancer (NSCLC). Bevacizumab (BEV) and apatinib (APA) are novel VEGF blockers that inhibit lung cancer cell proliferation and the development of pleural effusion. METHODS In this study, we established Lewis lung cancer (LLC) xenograft mouse models to compare the therapeutic effect of APA and BEV in combination with cisplatin (CDDP) against MPE. The anti-tumour and anti-angiogenic effects of this combination therapy were evaluated by 18F-FDG PET/CT imaging, TUNEL assay and Immunohistochemistry. RESULTS The triple drug combination significantly prolonged the overall survival of the tumour-bearing mice by reducing MPE and glucose metabolism and was more effective in lowering VEGF/soluble VEGFR-2 levels in the serum and pleural exudates compared to either of the monotherapies. Furthermore, CDDP + APA + BEV promoted in vivo apoptosis and decreased microvessel density. CONCLUSIONS Mechanistically, LLC-induced MPE was inhibited by targeting the VEGF-MEK/ERK pathways. Further studies are needed to establish the synergistic therapeutic effect of these drugs in NSCLC patients with MPE.KEY MESSAGESCombined treatment of MPE with apatinib, bevacizumab and cisplatin can prolong the survival time of mice, reduce the content of MPE, decrease the SUVmax of thoracic tumour tissue, down-regulate the content of VEGF and sVEGFR-2 in serum and pleural fluid, and promote the apoptosis of tumour cells. Angiogenesis and MPE formation can be inhibited by down-regulation of HIF-1α, VEGF, VEGFR-2, MEK1 and MMP-2 molecular signalling pathway proteins.
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Affiliation(s)
- Zhangqiang Xiang
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Phase 1 Clinical Trial Center, Deyang People's Hospital, Deyang, China
| | - Xiangyu Deng
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Wenfeng He
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Qian Yang
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Laichao Ni
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | | | - Mazaher Maghsoudloo
- Laboratory of Systems Biology and Bioinformatics, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran.,Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Gang Yang
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Department of Oncology, Anyue Hospital of Traditional Chinese Medicine, Second Ziyang Hospital of Traditional Chinese Medicine, Ziyang, China
| | - Jingbo Wu
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China. The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Saber Imani
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Qinglian Wen
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
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Dhingra VK, Khan D, Kumar R, Basu S. Nonmalignant Thoracic Disorders: An Appraisal of Fluorodeoxyglucose and Non-fluorodeoxyglucose PET/Computed Tomography Applications. PET Clin 2022; 17:495-515. [PMID: 35717104 DOI: 10.1016/j.cpet.2022.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
PET/computed tomography (CT) with fluorodeoxyglucose and nonfluorodeoxyglucose PET tracers has established itself in the management of malignant disorders. Its role in the assessment of nonmalignant conditions, such as infectious and noninfectious inflammatory diseases and other benign conditions, has emerged independently and alongside its role being evaluated in malignancy and continues to evolve. It is evident that PET/CT has the potential to play a significant role in various nonmalignant disorders of the thorax. This review highlights current developments and areas where PET/CT has a potential to impact the clinical management of nonmalignant thoracic conditions with special focus on nonfluorodeoxyglucose tracers.
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Affiliation(s)
- Vandana Kumar Dhingra
- Department of Nuclear Medicine, All India Institute of Medical Sciences, Rishikesh, Uttarakhand 249203, India
| | - Dikhra Khan
- Department of Nuclear Medicine, All India Institute of Medical Sciences, Sri Aurobindo Marg, Ansari Nagar, Ansari Nagar East, New Delhi, Delhi 110029, India
| | - Rakesh Kumar
- Department of Nuclear Medicine, All India Institute of Medical Sciences, Sri Aurobindo Marg, Ansari Nagar, Ansari Nagar East, New Delhi, Delhi 110029, India
| | - Sandip Basu
- Radiation Medicine Centre (B.A.R.C), Tata Memorial Hospital Annexe, Jerbai Wadia Road, Parel, Mumbai, Maharashtra 400012, India; Homi Bhabha National Institute, 2nd floor, BARC Training School Complex, Anushaktinagar, Mumbai, Maharashtra 400094, India.
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Positron emission tomography-computed tomography (PET-CT) in suspected malignant pleural effusion. An updated systematic review and meta-analysis. Lung Cancer 2021; 162:106-118. [PMID: 34775214 DOI: 10.1016/j.lungcan.2021.10.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 10/31/2021] [Indexed: 12/19/2022]
Abstract
The role of PET and integrated PET-CT in the diagnostic workup of suspected malignant pleural effusions is unknown. Earlier systematic reviews (published 2014 and 2015) both included pleural pathology without effusion, and reached contradictory conclusions. Five studies have been published since the latest review. This systematic review and meta-analysis aims to summarise the evidence of PET and integrated PET-CT in predicting pleural malignancy in patients suspected of having malignant pleural effusions. A meta-analysis based on a systematic literature search in Cochrane Library, Medline, EMBASE and Clinicaltrials.gov was performed. Diagnostic studies evaluating the performance of PET or PET-CT in patients with suspected malignant pleural effusion, using pleural fluid cytology or histopathology as the reference test, and presenting sufficient data for constructing a 2x2 table were included. The quality of the studies was assessed by the Quality Assessment of Diagnostic Accuracy Studies-2 score. Subgroup analyses on image modality, interpretation method and known malignancy status pre index-test application were planned. Seven studies with low risk of bias were included. The pooled ability to separate benign from malignant effusions varied with image modality, interpretation method and known malignancy status pre index-test application. In studies using PET-CT, visual/qualitative image analysis was superior to semi-quantitative with positive (LR + ) and negative likelihood ratio (LR-) of 9.9 (4.5-15.3) respectively 0.1 (0.1-0.2). There was considerable heterogeneity among studies. In conclusion, visual/qualitative image analysis of integrated PET-CT seems to add relevant information in the work-up of suspected malignant pleural effusions with LR + and LR- close to rigorous pre-set cut-offs of > 10 and < 0.1. However, the quality of evidence was low due to inter-study heterogeneity, and inability to assess meta-bias. Clinical Trial Registration: The protocol was uploaded to the PROSPERO database (CRD42020213319) on the 13th of October 2020.
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Li Y, Mu W, Li Y, Song X, Huang Y, Jiang L. Predicting the nature of pleural effusion in patients with lung adenocarcinoma based on 18F-FDG PET/CT. EJNMMI Res 2021; 11:108. [PMID: 34652524 PMCID: PMC8519982 DOI: 10.1186/s13550-021-00850-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 09/28/2021] [Indexed: 12/25/2022] Open
Abstract
Background This study aims to establish a predictive model on the basis of 18F-FDG PET/CT for diagnosing the nature of pleural effusion (PE) in patients with lung adenocarcinoma. Methods Lung adenocarcinoma patients with PE who underwent 18F-FDG PET/CT were collected and divided into training and test cohorts. PET/CT parameters and clinical information in the training cohort were collected to estimate the independent predictive factors of malignant pleural effusion (MPE) and to establish a predictive model. This model was then applied to the test cohort to evaluate the diagnostic efficacy. Results A total of 413 lung adenocarcinoma patients with PE were enrolled in this study, including 245 patients with MPE and 168 patients with benign PE (BPE). The patients were divided into training (289 patients) and test (124 patients) cohorts. CEA, SUVmax of tumor and attachment to the pleura, obstructive atelectasis or pneumonia, SUVmax of pleura, and SUVmax of PE were identified as independent significant factors of MPE and were used to construct a predictive model, which was graphically represented as a nomogram. This predictive model showed good discrimination with the area under the curve (AUC) of 0.970 (95% CI 0.954–0.986) and good calibration. Application of the nomogram in the test cohort still gave good discrimination with AUC of 0.979 (95% CI 0.961–0.998) and good calibration. Decision curve analysis demonstrated that this nomogram was clinically useful. Conclusions Our predictive model based on 18F-FDG PET/CT showed good diagnostic performance for PE, which was helpful to differentiate MPE from BPE in patients with lung adenocarcinoma. Supplementary Information The online version contains supplementary material available at 10.1186/s13550-021-00850-2.
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Affiliation(s)
- Yi Li
- Department of Nuclear Medicine, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, 507 Zhengmin Road, Shanghai, 200344, China
| | - Wei Mu
- Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing, 100191, China.,Key Laboratory of Molecular Imaging, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yuan Li
- Department of Nuclear Medicine, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, 507 Zhengmin Road, Shanghai, 200344, China
| | - Xiao Song
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, 200344, China
| | - Yan Huang
- Department of Pathology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, 200344, China
| | - Lei Jiang
- Department of Nuclear Medicine, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, 507 Zhengmin Road, Shanghai, 200344, China.
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12
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Diagnosis of tuberculous pleural effusions: A review. Respir Med 2021; 188:106607. [PMID: 34536698 DOI: 10.1016/j.rmed.2021.106607] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/19/2021] [Accepted: 09/03/2021] [Indexed: 01/24/2023]
Abstract
Tuberculous pleural effusion (TPE) is the second most common presentation of extrapulmonary tuberculosis. The paucibacillary nature of the effusion poses diagnostic challenges. Biomarkers like adenosine deaminase and interferon-γ have some utility for diagnosing TPEs, as do cartridge-based polymerase chain reaction (PCR) methods. When these fluid studies remain indeterminate, pleural biopsies must be performed to confirm the diagnosis. This review article elaborates on the scientific evidence available for various diagnostic tests and presents a practical approach to the diagnosis of TPEs.
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Simsek FS, Yuksel D, Yaylali O, Aslan HS, Kılıçarslan E, Bir F, Arslan M, Can FE, Ugurlu E. Can PET/CT be used more effectively in pleural effusion evaluation? Jpn J Radiol 2021; 39:1186-1194. [PMID: 34165683 DOI: 10.1007/s11604-021-01155-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 06/10/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE Sometimes, characterization of pleural effusion (PE) can be challenging especially in patients whom invasive procedures/recurrent invasive procedures cannot be performed. The main purpose of the study is to answer this question, Can 18F-FDG-PET/CT contribute to reduction in the number of invasive procedures or patients undergoing to invasive procedures? Results may increase the effectiveness of patient management by facilitating clinical decision-making, especially in patients who cannot undergo invasive/recurrent invasive procedures. METHODS Sixty-seven patients' 18F-FDG-PET/CT, pleural fluid cytologies (PFCs) and, if any, pleural biopsies were re-assessed. If patient's PFC/biopsy was malignant, effusion was considered as malignant. If two consecutive PFCs were negative in patients without biopsy, effusion was considered as benign. Characterization was based on consensus with baseline/follow-up 18F-FDG-PET/CT and clinical parameters in patients with one negative PFC (n = 6). RESULTS None of the 18F-FDG-PET/CT parameters could characterize PE alone. However, if PE maximum standardized uptake value (SUVmax) > 1.3 or PE SUVmax/mean standardized uptake value of mediastinal blood pool (MBP SUVmean) > 1.2 was combined with at least one of the following, specificity and positive predictive value (PPV) were 100%, accuracy was around 90%. Diffuse-nodular/nodular pleural thickness, post-obstructive atelectasis, nodule/mass with SUVmax > 2.5 in lung, multiple pulmonary nodules. All 29 patients who had SUVmax > 1.3 together with at least one of the mentioned four parameters diagnosed malignant pleural effusion (MPE). However, sensitivity and negative predictive value (NPV) were still insufficient. CONCLUSION Patients who have contraindications for invasive diagnostic methods, and meet the aforementioned criteria may be considered as MPE primarily. On the other hand, if PE SUVmax < 1.3 or PE SUVmax/MBP SUVmean < 1.2 with the negativity of the all four parameters mentioned above, it is difficult to say that this can be considered as benign pleural effusion (BPE) according to our results.
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Affiliation(s)
- Fikri Selcuk Simsek
- Nuclear Medicine Department, Faculty of Medicine, Pamukkale University, Denizli, Turkey.
| | - Dogangun Yuksel
- Nuclear Medicine Department, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Olga Yaylali
- Nuclear Medicine Department, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Halil Serdar Aslan
- Radiology Department, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Emel Kılıçarslan
- Pathology Department, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Ferda Bir
- Pathology Department, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Muhammet Arslan
- Radiology Department, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Fatma Ezgi Can
- Biostatistics Department, Faculty of Medicine, Izmir Katip Celebi University, Izmir, Turkey
| | - Erhan Ugurlu
- Pulmonology Department, Faculty of Medicine, Pamukkale University, Denizli, Turkey
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Kitajima K, Matsuo H, Kono A, Kuribayashi K, Kijima T, Hashimoto M, Hasegawa S, Murakami T, Yamakado K. Deep learning with deep convolutional neural network using FDG-PET/CT for malignant pleural mesothelioma diagnosis. Oncotarget 2021; 12:1187-1196. [PMID: 34136087 PMCID: PMC8202770 DOI: 10.18632/oncotarget.27979] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 05/14/2021] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVES This study analyzed an artificial intelligence (AI) deep learning method with a three-dimensional deep convolutional neural network (3D DCNN) in regard to diagnostic accuracy to differentiate malignant pleural mesothelioma (MPM) from benign pleural disease using FDG-PET/CT results. RESULTS For protocol A, the area under the ROC curve (AUC)/sensitivity/specificity/accuracy values were 0.825/77.9% (81/104)/76.4% (55/72)/77.3% (136/176), while those for protocol B were 0.854/80.8% (84/104)/77.8% (56/72)/79.5% (140/176), for protocol C were 0.881/85.6% (89/104)/75.0% (54/72)/81.3% (143/176), and for protocol D were 0.896/88.5% (92/104)/73.6% (53/72)/82.4% (145/176). Protocol D showed significantly better diagnostic performance as compared to A, B, and C in ROC analysis (p = 0.031, p = 0.0020, p = 0.041, respectively). MATERIALS AND METHODS Eight hundred seventy-five consecutive patients with histologically proven or suspected MPM, shown by history, physical examination findings, and chest CT results, who underwent FDG-PET/CT examinations between 2007 and 2017 were investigated in a retrospective manner. There were 525 patients (314 MPM, 211 benign pleural disease) in the deep learning training set, 174 (102 MPM, 72 benign pleural disease) in the validation set, and 176 (104 MPM, 72 benign pleural disease) in the test set. Using AI with PET/CT alone (protocol A), human visual reading (protocol B), a quantitative method that incorporated maximum standardized uptake value (SUVmax) (protocol C), and a combination of PET/CT, SUVmax, gender, and age (protocol D), obtained data were subjected to ROC curve analyses. CONCLUSIONS Deep learning with 3D DCNN in combination with FDG-PET/CT imaging results as well as clinical features comprise a novel potential tool shows flexibility for differential diagnosis of MPM.
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Affiliation(s)
- Kazuhiro Kitajima
- Department of Radiology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Hidetoshi Matsuo
- Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Atsushi Kono
- Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Kozo Kuribayashi
- Division of Respiratory Medicine, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Takashi Kijima
- Division of Respiratory Medicine, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Masaki Hashimoto
- Department of Thoracic Surgery, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Seiki Hasegawa
- Department of Thoracic Surgery, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Takamichi Murakami
- Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Koichiro Yamakado
- Department of Radiology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
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Özmen Ö, Tatci E, Demiröz ŞM, Tazeler Z, Demirağ F. Is 18F-FDG PET/CT capable of differential diagnosis from tuberculous pleurisy from malignant mesothelioma? Nucl Med Commun 2021; 42:672-677. [PMID: 33625184 DOI: 10.1097/mnm.0000000000001375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIM 18F-Fluorodeoxyglucose (FDG) PET/computerized tomography (CT) is a valuable method in the diagnosis of malignant pleural mesothelioma (MPM). But, some infections, particularly tuberculosis, are known to mimic cancer. We aimed to compare the FDG PET/CT findings of tuberculosis pleurisy (TP) and malignant mesothelioma and evaluate its role of differential diagnosis. MATERIAL AND METHOD We retrospectively reviewed the data from 85 patients (45 patients with MPM and 40 patients with TP) who underwent FDG PET/CT. All images were reevaluated and pleural thickening, maximum standardized uptake values (SUVmax), lymphatic uptake and accompanying parenchymal findings were noted. RESULTS There was no significant difference in age and sex between the two groups. Pleural thickening was more prominent in the MPM group. Mean pleural thickness was 21.4 ± 18.6 mm in the MPM group and 6.8 ± 3.5 mm in the TP group (P = 0.0). Besides pleural pathology, lymph nodes involvement in the thoracic (P = 0.0) and extrathoracic area (P = 0.34) and parenchymal findings were prominent in the TP group (P = 0.0). However, there was no significant difference in pleural SUVmax values between the two groups (P = 0.61). CONCLUSION Intense pleural FDG uptake can be observed in TP like malignant mesothelioma. For the evaluation of the pleural pathologies in the tuberculosis endemic countries, it should be considered that FDG PET/CT may have false-positive results. Evaluation of increased pleural FDG uptake together with the detected parenchymal findings and lymphatic involvement may help us to make more accurate interpretation of the diagnosis.
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Affiliation(s)
| | | | | | | | - Funda Demirağ
- Pathology, University of Health Sciences Atatürk Chest Diseases and Thoracic Surgery Training and Research Hospital, Ankara, Turkey
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16
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The prognostic value of 18F-fluorodeoxyglucose positron emission tomography/ computed tomography parameters in patients with malignant pleural mesothelioma. TURK GOGUS KALP DAMAR CERRAHISI DERGISI-TURKISH JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY 2021; 29:92-100. [PMID: 33768986 PMCID: PMC7970077 DOI: 10.5606/tgkdc.dergisi.2021.20432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 10/23/2020] [Indexed: 12/29/2022]
Abstract
Background
In this study, we aimed to investigate the prognostic value of metabolic 18F-fluorodeoxyglucose positron emission tomography/computed tomography parameters in malignant pleural mesothelioma patients.
Methods
A total of 65 patients with malignant pleural mesothelioma (34 males, 31 females; median age: 60 years; range, 39 to 84 years) who underwent whole-body 18F-fluorodeoxyglucose positron emission tomography/computed tomography for staging before treatment between March 2008 and January 2018 were included. Relationships between clinicopathological factors and 18F-fluorodeoxyglucose positron emission tomography/computed tomography parameters and overall survival were evaluated using a log-rank test and Cox regression analysis.
Results
The median follow-up was 13 (range, 4 to 55) months. The Kaplan-Meier analysis revealed a mean survival time of 17±2.6 months. The cumulative two- and five-year survival rates were 34.8% and 7.8%, respectively. Univariate analysis showed that ≥60 age, left hemithorax involvement, a maximum standardized uptake value of ≥9.8, c-T4 status, c-M1 status, and non-surgery were negatively associated with overall survival (p<0.05). Multivariate analysis showed that ≥60 age, left hemithorax involvement, a maximum standardized uptake value of ≥9.8, c-M1 status, and a total lesion glycolysis of ≥180.2 g were negatively associated with overall survival (p<0.05).
Conclusion
Metabolic parameters of 18F-fluorodeoxyglucose positron emission tomography/computed tomography have the potential to provide prognostic information for malignant pleural mesothelioma patients who are receiving surgery and/or chemotherapy.
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Abstract
Advanced malignancy is a prevalent cause of exudative pleural effusion. The management of malignant pleural effusion (MPE) has been the subject of several recent randomized controlled trials and excellent reviews. Less attention has been focused on another controversial and challenging aspect of MPE: establishing the diagnosis. Before selecting the optimal management strategy, the presence of an MPE must first be correctly identified with an emphasis on minimizing invasiveness and discomfort in a patient with late-stage cancer. The aim of the present review is to summarize the current knowledge about MPE diagnostics and to propose an algorithm for the diagnosis of MPE in established or suspected malignancy.
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Abstract
Purpose of Review The main goal of the article is to familiarize the reader with commonly and uncommonly used nuclear medicine procedures that can significantly contribute to improved patient care. The article presents examples of specific modality utilization in the chest including assessment of lung ventilation and perfusion, imaging options for broad range of infectious and inflammatory processes, and selected aspects of oncologic imaging. In addition, rapidly developing new techniques utilizing molecular imaging are discussed. Recent Findings The article describes nuclear medicine imaging modalities including gamma camera, SPECT, PET, and hybrid imaging (SPECT/CT, PET/CT, and PET/MR) in the context of established and emerging clinical applications. Areas of potential future development in nuclear medicine are discussed with emphasis on molecular imaging and implementation of new targeted tracers used in diagnostics and therapeutics (theranostics). Summary Nuclear medicine and molecular imaging provide many unique and novel options for the diagnosis and treatment of pulmonary diseases. This article reviews current applications for nuclear medicine and molecular imaging and selected future applications for radiopharmaceuticals and targeted molecular imaging techniques.
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Abstract
The role of fluorodeoxyglucose (FDG)-PET/computed tomography (CT) in tuberculosis (TB) continues to expand in disease detection, assessment of the extent of the disease, and treatment response monitoring. This article reviews available data regarding the use of FDG-PET/CT in patients with TB. A new method of quantification for patients with TB is introduced. This method produces robust parameters that represent the total disease burden.
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Abstract
BACKGROUND Accurate staging is crucial for the proper management of patients with nonsmall cell lung cancer, especially for choosing the best treatment strategy. Different Imaging methods are used to stage patients with non-small cell lung cancer. In the last two decades, FDG PET/CT is carried out in almost all the main Hospitals around the world in this setting. OBJECTIVE The aim of this paper is to focus on the value of integrated FDG PET/CT in the TNM staging of the non-small cell lung cancer. METHODS A non-systematic revision of the literature was performed in order to identify all papers about the role of FDG PET/CT in the evaluation of non-small cell lung cancer and to highlight the value of FDG PET/CT in this setting. RESULTS Many data are now available about this topic, including also randomized controlled trials. FDG PET/CT is of limited added value in the characterization of T status but it increases the diagnostic accuracy for the assessment of the nodal status. The main advantage of FDG PET/CT over conventional imaging methods is its higher sensitivity in identifying extra-thoracic metastases, especially bone and adrenal lesions. CONCLUSION PET/CT with FDG should be included in the diagnostic work-up of patients with lung cancer, because it provides useful information for appropriate therapy.
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Affiliation(s)
- Mohsen Farsad
- Department of Nuclear Medicine, Central Hospital of Bolzano, Via Lorenz Böhler 5, 39100 Bolzano, Bozen, Italy
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21
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Abstract
Mesothelioma is a rare neoplasm that arises from mesothelial cells lining body cavities including the pleura, pericardium, peritoneum, and tunica vaginalis. Most malignant mesotheliomas occur in the chest and are frequently associated with a history of asbestos exposure. The diagnosis of malignant mesothelioma is challenging and fraught with pitfalls, particularly in small biopsies. This article highlights what the pathologist needs to know regarding the clinical and radiographic presentation of mesothelioma, histologic features including subtypes and variants, and recent advances in immunohistochemical markers and molecular testing.
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In-vivo imaging of methionine metabolism in patients with suspected malignant pleural mesothelioma. Nucl Med Commun 2019; 40:1179-1186. [DOI: 10.1097/mnm.0000000000001078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Comment on: "the FDG PET/CT score" for the diagnosis of malignant pleural effusion. Eur J Nucl Med Mol Imaging 2019; 47:5-6. [PMID: 31485682 DOI: 10.1007/s00259-019-04512-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 08/26/2019] [Indexed: 10/26/2022]
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Shaw JA, Diacon AH, Koegelenberg CFN. Tuberculous pleural effusion. Respirology 2019; 24:962-971. [PMID: 31418985 DOI: 10.1111/resp.13673] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 07/05/2019] [Accepted: 07/23/2019] [Indexed: 12/19/2022]
Abstract
Tuberculous effusion is a common disease entity with a spectrum of presentations from a largely benign effusion, which resolves completely, to a complicated effusion with loculations, pleural thickening and even frank empyema, all of which may have a lasting effect on lung function. The pathogenesis is a combination of true pleural infection and an effusive hypersensitivity reaction, compartmentalized within the pleural space. Diagnostic thoracentesis with thorough pleural fluid analysis including biomarkers such as adenosine deaminase and gamma interferon achieves high accuracy in the correct clinical context. Definitive diagnosis may require invasive procedures to demonstrate histological evidence of caseating granulomas or microbiological evidence of the organism on smear or culture. Drug resistance is an emerging problem that requires vigilance and extra effort to acquire a complete drug sensitivity profile for each tuberculous effusion treated. Nucleic acid amplification tests such as Xpert MTB/RIF can be invaluable in this instance; however, the yield is low in pleural fluid. Treatment consists of standard anti-tuberculous therapy or a guideline-based individualized regimen in the case of drug resistance. There is low-quality evidence that suggests possible benefit from corticosteroids; however, they are not currently recommended due to concomitant increased risk of adverse effects. Small studies report some short- and long-term benefit from interventions such as therapeutic thoracentesis, intrapleural fibrinolytics and surgery but many questions remain to be answered.
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Affiliation(s)
- Jane A Shaw
- Division of Pulmonology, Department of Medicine, Tygerberg Academic Hospital and Stellenbosch University, Cape Town, South Africa
| | - Andreas H Diacon
- Division of Pulmonology, Department of Medicine, Tygerberg Academic Hospital and Stellenbosch University, Cape Town, South Africa
| | - Coenraad F N Koegelenberg
- Division of Pulmonology, Department of Medicine, Tygerberg Academic Hospital and Stellenbosch University, Cape Town, South Africa
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Epelbaum O, Rahman NM. Contemporary approach to the patient with malignant pleural effusion complicating lung cancer. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:352. [PMID: 31516898 DOI: 10.21037/atm.2019.03.61] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Malignant pleural effusion (MPE) occurring in the patient with lung cancer can have profound prognostic and management implications. If clinically relevant, such an effusion first needs to be confirmed as malignant and then, in the majority of lung cancer patients, it will require a pleural intervention to relieve symptoms related to fluid accumulation. The field of pleural diseases in general, and pleural malignancy in particular, has undergone dynamic changes in recent years as the evidence base informing practice has grown by leaps and bounds. Both the diagnosis and management of MPE are dynamically changing disciplines in thoracic medicine. As commonly happens, emerging data have generated just as many questions as they have answered. The aim of the present review is to summarize the current knowledge about MPE resulting from lung cancer in a manner that is accessible to clinicians across medical specialties.
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Affiliation(s)
- Oleg Epelbaum
- Division of Pulmonary, Critical Care and Sleep Medicine, Westchester Medical Center, Valhalla, NY, USA
| | - Najib M Rahman
- Oxford Centre for Respiratory Medicine, Respiratory Trials Unit, Oxford University, Oxford, UK
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Reuter S, Lindgaard D, Laursen C, Fischer BM, Clementsen PF, Bodtger U. Computed tomography of the chest in unilateral pleural effusions: outcome of the British Thoracic Society guideline. J Thorac Dis 2019; 11:1336-1346. [PMID: 31179075 DOI: 10.21037/jtd.2019.03.75] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Background The guidelines from the British Thoracic Society (BTS) regarding the investigation of unilateral pleural effusions recommend computed tomography (CT) in exudates. We decided to investigate if clinicians follow BTS guidelines' recommendations with respect to CT in patients with unilateral pleural effusions. Secondly, to investigate the diagnostic consequences of following and not following this recommendation. Methods The study was a retrospective, non-randomized study including consecutive patients referred to our tertiary centers in 2013-2016 because of unilateral pleural effusion. Patients undergoing chest CT for unilateral pleural effusion of unknown cause after thoracentesis and chest X-ray were included. Patients were categorized as having pleural exudates or transudates, according to Light's criteria, if applicable. We registered use of CT, and calculated diagnostic values. Results In total, 323 of the 465 included patients underwent CT (69%). CT was performed in the majority of patients not having an exudate (transudates: n=40; 54%; Light's criteria not assessed: n=111; 67%). 18F-FDG positron emission tomography (PET)/CT without prior CT was performed in 32 patients with an exudate (58%). The sensitivity of a non-guideline supported CT (70%) was significantly higher compared to a guideline supported CT (47%), P value <0.045. The post-test probability of a positive guideline-supported CT [likelihood ratio (LR) positive 3.26] for a later diagnosis of thoracic malignancy increased the probability from 25% to 52%. A negative CT (LR negative 0.62) decreased the probability to 17%. For a non-guideline-supported CT the numbers were (LR positive 3.42) 53% and (LR negative 0.38) 11%, respectively. Conclusions Clinicians appear not to follow BTS guidelines when deciding to perform chest CT. The relevance of this deviation is supported by the superior sensitivity of CT non-guideline supported CT. Overall, CT is associated with suboptimal sensitivity and negative predictive values for the diagnosis of thoracic malignancy.
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Affiliation(s)
- Simon Reuter
- Department of Respiratory Medicine, Naestved Hospital, Naestved, Denmark.,Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Dennis Lindgaard
- Department of Respiratory Medicine, Odense University Hospital, Odense, Denmark
| | - Christian Laursen
- Department of Respiratory Medicine, Odense University Hospital, Odense, Denmark
| | - Barbara Malene Fischer
- Department of Clinical Physiology, Nuclear Medicine and PET, University of Copenhagen, Copenhagen, Denmark
| | - Paul Frost Clementsen
- Department of Respiratory Medicine, Zealand University Hospital, Roskilde, Denmark.,Copenhagen Academy for Medical Education and Simulation (CAMES), University of Copenhagen, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Uffe Bodtger
- Department of Respiratory Medicine, Naestved Hospital, Naestved, Denmark.,Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark.,Department of Respiratory Medicine, Zealand University Hospital, Roskilde, Denmark
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Wan CH, Tseng JR, Lee MH, Yang LY, Yen TC. Clinical utility of FDG PET/CT in acute complicated pyelonephritis-results from an observational study. Eur J Nucl Med Mol Imaging 2018; 45:462-470. [PMID: 28951990 DOI: 10.1007/s00259-017-3835-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 09/14/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Acute complicated pyelonephritis (ACP) is an upper urinary tract infection associated with coexisting urinary tract abnormalities or medical conditions that could predispose to serious outcomes or treatment failures. Although CT and magnetic resonance imaging (MRI) are frequently used in patients with ACP, the clinical value of 18F-fluorodeoxyglucose positron emission tomography and computed tomography (FDG PET/CT) has not been systematically investigated. This single-center retrospective study was designed to evaluate the potential usefulness of FDG PET/CT in patients with ACP. METHODS Thirty-one adult patients with ACP who underwent FDG PET/CT were examined. FDG PET/CT imaging characteristics, including tracer uptake patterns, kidney volumes, and extrarenal imaging findings, were reviewed in combination with clinical data and conventional imaging results. RESULTS Of the 31 patients, 19 (61%) showed focal FDG uptake. The remaining 12 study participants showed a diffuse FDG uptake pattern. After volumetric approximation, the affected kidneys were found to be significantly enlarged. Patients who showed a focal uptake pattern had a higher frequency of abscess formation requiring drainage. ACP patients showing diffuse tracer uptake patterns had a more benign clinical course. Seven patients had suspected extrarenal coinfections, and FDG PET/CT successfully confirmed the clinical suspicion in five cases. FDG PET/CT was as sensitive as CT in identifying the six patients (19%) who developed abscesses. Notably, FDG PET/CT findings caused a modification to the initial antibiotic regimen in nine patients (29%). CONCLUSIONS FDG PET/CT may be clinically useful in the assessment of patients with ACP who have a progressive disease course.
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Affiliation(s)
- Chih-Hsing Wan
- Department of Nuclear Medicine, Mackay Memorial Hospital at Taipei, No. 92, Section 2, Zhong-shan North road, Zhong-shan District, Taipei, Taiwan, Republic of China
| | - Jing-Ren Tseng
- Department of Nuclear Medicine and Center for Advanced Molecular Imaging and Translation, Chang Gung Memorial Hospital at Linkou, No. 5, Fu-Hsing ST., Kwei-Shan, Taoyuan, Taiwan, Republic of China
- Department of Medical Imaging and Radiological Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China
| | - Ming-Hsun Lee
- Division of Infectious Diseases, Department of Internal Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan, Republic of China
| | - Lan-Yan Yang
- Biostatistics Unit, Clinical Trial Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan, Republic of China
| | - Tzu-Chen Yen
- Department of Nuclear Medicine and Center for Advanced Molecular Imaging and Translation, Chang Gung Memorial Hospital at Linkou, No. 5, Fu-Hsing ST., Kwei-Shan, Taoyuan, Taiwan, Republic of China.
- Department of Medical Imaging and Radiological Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China.
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Pelletier-Galarneau M, Martineau P, Zuckier LS, Pham X, Lambert R, Turpin S. 18 F-FDG-PET/CT Imaging of Thoracic and Extrathoracic Tuberculosis in Children. Semin Nucl Med 2017; 47:304-318. [DOI: 10.1053/j.semnuclmed.2016.12.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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29
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Kluge R, Kurch L, Georgi T, Metzger M. Current Role of FDG-PET in Pediatric Hodgkin's Lymphoma. Semin Nucl Med 2017; 47:242-257. [PMID: 28417854 DOI: 10.1053/j.semnuclmed.2017.01.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hodgkin's lymphoma is one of the most curable pediatric cancers with long-term survival rates exceeding 90% following intensive treatment. Collaborative group studies worldwide aim on reduction or elimination of radiotherapy to avoid potentially life-limiting late effects especially second cancers and cardiovascular diseases. Large prospective trials have integrated early response FDG-PET scans to identify adequate responders to chemotherapy in whom radiotherapy may safely be omitted. The criteria for interpretation of early response PET have changed during the past years and will be further refined based on trial results. FDG-PET is also systematically used to assess initial disease involvement of pediatric Hodgkin's lymphoma and could replace bone marrow biopsy. This article summarizes the role of FDG-PET in staging and response assessment focusing on large pediatric trials, the criteria for PET interpretation and pitfalls.
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Affiliation(s)
- Regine Kluge
- Department of Nuclear Medicine, University Hospital of Leipzig, Leipzig, Germany.
| | - L Kurch
- Department of Nuclear Medicine, University Hospital of Leipzig, Leipzig, Germany
| | - Thomas Georgi
- Department of Nuclear Medicine, University Hospital of Leipzig, Leipzig, Germany
| | - Monika Metzger
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN
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