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Bai X, Zhang G, Xu L, Zhang X, Zhang X, Jin Z, Sun H. Diagnostic accuracy of CT imaging parameters in pelvic lipomatosis. Abdom Radiol (NY) 2021; 46:2779-2788. [PMID: 33507345 DOI: 10.1007/s00261-020-02946-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 12/22/2020] [Accepted: 12/31/2020] [Indexed: 12/28/2022]
Abstract
PURPOSE To predict the diagnosis of pelvic lipomatosis (PL) by assessing CT imaging parameters. METHODS Fifty clinically proven PL patients and 50 controls were included. Two radiologists recorded the types of bladder shapes and measured the following CT imaging parameters: (1) pelvic fat volume (PFV); (2) a set of morphological indices of bladder and rectosigmoid, including the ratio of craniocaudal to anterior-posterior length of bladder (CC/AP), angle between anterior and posterior wall (AAP), relative length of posterior urethra (rLPU), right and left angles between bladder and seminal vesicle (RABS and LABS), distance from verumontanum to anterior wall of rectum (DVR) and rectosigmoid morphological index (RMI). Secondary complications were also noted. RESULTS The results were evaluated by an unpaired t test, ROC analysis and logistic regression. All CT imaging parameters except RMI (p = 1.000) indicated a statistical difference between PL and controls (p < 0.01). The AUCs of these parameters were between 0.724 (for rLPU) and 0.993 (for AAP). The sensitivity and specificity were 94% and 98% for AAP and 92% and 94% for the combined model, respectively. 23 patients were pathologically diagnosed with cystitis glandular. The incidence of hydronephrosis in the PL group was higher than that in the control group (p < 0.01). CONCLUSION CT imaging parameters can predict the diagnosis of PL. The combined model of objective parameters including PFV, rLPU and DVR showed the best diagnostic performance for PL.
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Affiliation(s)
- Xin Bai
- Department of Radiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Shuaifuyuan No.1, Wangfujing Street, Dongcheng District, Beijing, 100730, China
| | - Gumuyang Zhang
- Department of Radiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Shuaifuyuan No.1, Wangfujing Street, Dongcheng District, Beijing, 100730, China
| | - Lili Xu
- Department of Radiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Shuaifuyuan No.1, Wangfujing Street, Dongcheng District, Beijing, 100730, China
| | - Xiaoxiao Zhang
- Department of Radiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Shuaifuyuan No.1, Wangfujing Street, Dongcheng District, Beijing, 100730, China
| | - Xuebin Zhang
- Department of Urology Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Shuaifuyuan No.1, Wangfujing Street, Dongcheng District, Beijing, 100730, China
| | - Zhengyu Jin
- Department of Radiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Shuaifuyuan No.1, Wangfujing Street, Dongcheng District, Beijing, 100730, China.
| | - Hao Sun
- Department of Radiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Shuaifuyuan No.1, Wangfujing Street, Dongcheng District, Beijing, 100730, China.
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Sun Y, Wang J, Chiang M, Li H, Liu JB, Wang S. Value of Multimode Sonography for Assessment of Pelvic Lipomatosis Compared With Computed Tomography. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2016; 35:1143-1148. [PMID: 27091913 DOI: 10.7863/ultra.15.06053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 08/31/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVES To assess imaging features of pelvic lipomatosis with a multimode sonographic technique, including 2-dimensional (2D) grayscale sonography, 3-dimensional (3D) sonography, and transrectal sonography, and compare its diagnostic features with those of computed tomography (CT). METHODS In this study, 7 patients with different clinical manifestations were incidentally discovered by 2D sonography and followed by 3D and transrectal sonography before CT was performed for comparison. The urinary tract morphologic characteristics, bladder shape, and amount and distribution of perivesical or perirectal fatty tissue in all 7 patients were evaluated by both imaging modalities. Ten healthy participants were recruited and imaged as a control group. RESULTS The following sonographic features were shown in all 7 patients: (1) bilateral hydroureters and hydronephrosis on 2D sonography; (2) bladder shifting anteriorly and superiorly on 2D sonography; (3) nonvisualization of the prostate through the bladder window on transabdominal scanning and nonvisualization of the bladder when the prostate was scanned by transrectal sonography; (4) bladder elongation in the craniocaudal dimension, which appeared as a gourd or pear shape on 3D sonography; and (5) excessive fat accumulation between the prostate and rectum as well as in perivesical or perirectal regions on 2D and transrectal sonography. Computed tomography in these patients confirmed the sonographic findings, with evidence of hydronephrosis, bladder location shift and elongation, and excessive fitty tissue with extrinsic compression. CONCLUSIONS This preliminary study has shown that the application of a multimode sonographic technique (ie, 2D, 3D, and transrectal sonography) can provide unique evidence and imaging features of pelvic lipomatosis, which are comparable with CT for making a suggestive diagnosis of pelvic lipomatosis. Thus, multimode sonography may be the modality of choice for assessment of patients with a suspicion of lipomatosis.
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Affiliation(s)
- Yaqin Sun
- Ordos Center Hospital, Ordos, Inner Mongolia, China
| | - Jianhua Wang
- Ordos Center Hospital, Ordos, Inner Mongolia, China
| | | | - Huiwen Li
- Ordos Center Hospital, Ordos, Inner Mongolia, China
| | - Ji-Bin Liu
- Jefferson Ultrasound Research and Education Institute, Department of Radiology, Thomas Jefferson, Philadelphia, Pennsylvania USA
| | - Shumin Wang
- Ordos Center Hospital, Ordos, Inner Mongolia, ChinaDepartment of Ultrasonography, Peking University Third Hospital, Beijing, China
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Zhang Y, Wu S, Xi Z, Wang X, Jiang X. Measuring diagnostic accuracy of imaging parameters in pelvic lipomatosis. Eur J Radiol 2012; 81:3107-14. [PMID: 22749803 DOI: 10.1016/j.ejrad.2012.05.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Revised: 05/23/2012] [Accepted: 05/25/2012] [Indexed: 01/22/2023]
Abstract
OBJECTIVES To study whether the individual radiological findings can help predict diagnosis of pelvic lipomatosis (PL) or, specifically appreciate its progression. METHODS Data from 32 clinically proven cases of PL and 25 controls were collected. Two reviewers were recruited for a blinded evaluation, image features were recorded in terms of: (1) bladder shape; (2) bladder-rectosigmoid morphological indexes including ratio of superior-inferior to anterior-posterior length of bladder (SI/AP), angle between anterior and posterior wall (AAP), relative length of posterior urethra (rLPU), angle between bladder and seminal vesicle (ABS) and rectosigmoid morphological index (RMI); (3) secondary complications. Results were evaluated by an unpaired t test and ROC analysis. RESULTS The sensitivity and specificity were 40.6% and 100% for pear and banana-shaped bladder, 62.5% and 100% for SI/AP, 40.6% and 100% for AAP, 62.5% and 100% for ABS, 78.1% and 72% for rLPU, 59.4% and 96% for RMI, respectively. These radiological findings partially correlated with the severity of disease weighted by hydronephrosis and treatment grade. Image analysis demonstrated high prevalence of glandular cystitis (100%) and hydronephrosis (73.4%). CONCLUSION We conclude that PL is a progressive disease involving multiple pelvic organs with high prevalence of intractable cystitis and hydronephrosis. The imaging characteristics can help predict diagnosis and, specifically appreciate progression.
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Affiliation(s)
- Yudong Zhang
- Department of Radiology, Peking University First Hospital, Beijing, China.
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Trilla Herrera E, Torrecilla Ortíz C, Muñoz Seguí J, Riera Canals L, Suárez Novo JF, Marco Pérez LM, Franco Miranda E, Serrallach Milá N. [Pelvic lipomatosis: clinical review and report of 4 new cases]. Actas Urol Esp 2000; 24:423-8. [PMID: 10965581 DOI: 10.1016/s0210-4806(00)72475-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
First described by the end of the fifties, pelvic lipomatosis is an uncommon disease that develops as a result of an excessive proliferation of benign fat tissue within the perivesical and perirectal spaces. The compressive effect on the urinary, and to a lesser degree, the digestive and vascular structures result in the well-known symptoms. Diagnosis is reached through X-ray studies, primarily computerised tomography. Contribution of four new cases in young males diagnosed through imaging studies as well as biopsies in three of them. Evolution has been varying, with medical control of symptoms in two cases and renal function impairment due to upper obstructive uropathy in the other two.
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Affiliation(s)
- E Trilla Herrera
- Servicio de Urología, Hospital Princeps d'Espanya, Ciutat Sanitària i Universitària de Bellvitge
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Giongo A, Da Pozzo GP. Lipomatosi Pelvica: Diagnosi Differenziale Mediante Tac. Urologia 1982. [DOI: 10.1177/039156038204900202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- A. Giongo
- (Ospedale Civile di Brescia, Divisione di Urologia - Primario inc.: dott. A. Giongo)
| | - G. P. Da Pozzo
- (Ospedale Civile di Brescia, Divisione di Urologia - Primario inc.: dott. A. Giongo)
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Zattoni F, Passerini G, De Faveri D, Vigo M. La Tomografia Computerizzata Nella Diagnosi Della Lipomatosi Pelvica. Urologia 1981. [DOI: 10.1177/039156038104800216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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