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Gavlin A, Kierans AS, Chen J, Song C, Guniganti P, Mazzariol FS. Imaging and Treatment of Complications of Abdominal and Pelvic Mesh Repair. Radiographics 2021; 40:432-453. [PMID: 32125951 DOI: 10.1148/rg.2020190106] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Surgical mesh is used most frequently for tension-free repair of abdominal wall hernias in adults, because the rate of hernia recurrence is lower with mesh than with primary soft-tissue repair. Since the introduction of polypropylene mesh in the middle of the 20th century, many mesh materials and configurations for specific surgical procedures have been developed. In addition to abdominal wall hernia repair, mesh may be used for repair of diaphragmatic hernias, urinary incontinence in women (female slings), genitourinary prolapse (vaginal mesh and sacrocolpopexy), rectal prolapse (rectopexy), and postprostatectomy male urinary incontinence (male slings). General mesh repair complications include chronic pain; fluid collections such as seromas, hematomas, and abscesses; adhesions that may lead to intestinal blockage; erosion into solid or hollow viscera including enterocutaneous fistulizing disease; and mesh failure characterized by mesh shrinkage, detachment, and migration with repair malfunction. Several mesh complications are often diagnosed with imaging, primarily with CT and less frequently with MRI and US, despite variable mesh visibility at imaging. This article reviews the common surgical mesh applications in the abdomen and pelvis, discusses imaging of mesh repair complications, and provides complication treatment highlights.©RSNA, 2020.
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Affiliation(s)
- Alexander Gavlin
- From the Department of Radiology, Division of Abdominal Imaging, New York Presbyterian Hospital, Weill Cornell Medical Center, 525 E 68th St, Box 141, New York, NY 10065
| | - Andrea S Kierans
- From the Department of Radiology, Division of Abdominal Imaging, New York Presbyterian Hospital, Weill Cornell Medical Center, 525 E 68th St, Box 141, New York, NY 10065
| | - Johnson Chen
- From the Department of Radiology, Division of Abdominal Imaging, New York Presbyterian Hospital, Weill Cornell Medical Center, 525 E 68th St, Box 141, New York, NY 10065
| | - Christopher Song
- From the Department of Radiology, Division of Abdominal Imaging, New York Presbyterian Hospital, Weill Cornell Medical Center, 525 E 68th St, Box 141, New York, NY 10065
| | - Preethi Guniganti
- From the Department of Radiology, Division of Abdominal Imaging, New York Presbyterian Hospital, Weill Cornell Medical Center, 525 E 68th St, Box 141, New York, NY 10065
| | - Fernanda S Mazzariol
- From the Department of Radiology, Division of Abdominal Imaging, New York Presbyterian Hospital, Weill Cornell Medical Center, 525 E 68th St, Box 141, New York, NY 10065
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Kierans AS, Makkar J, Guniganti P, Cornman-Homonoff J, Lee MJ, Pittman M, Askin G, Hecht EM. Validation of Liver Imaging Reporting and Data System 2017 (LI-RADS) Criteria for Imaging Diagnosis of Hepatocellular Carcinoma. J Magn Reson Imaging 2018; 49:e205-e215. [PMID: 30257054 DOI: 10.1002/jmri.26329] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 08/20/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The Liver Imaging Reporting and Data System (LI-RADS) is being adapted by many clinical practices. To support continuation of its use, LI-RADS (LR) is in need of multicenter validation studies of recent LI-RADS iterations. Furthermore, while both gadoxetate and extracellular agents have been incorporated into LI-RADS, comparison of the diagnostic performance between the two has yet to be determined. PURPOSE/HYPOTHESIS To evaluate the rate, diagnostic performance, and interreader reliability (IRR) of LI-RADS 2017 for hepatocellular carcinoma, including LR major and ancillary features, with both gadoxetate and extracellular agent-enhanced MRI against a reference standard of histopathology or imaging follow-up. STUDY TYPE Retrospective. POPULATION In all, 114 patients with 144 observations were included who met LR 2017 criteria for at risk and had at least one hepatic observation on liver MRI performed with either gadoxetate (n = 52) or an extracellular agent (n = 92) between 2010-2016, with histopathology (n = 103) or follow-up imaging (n = 41). FIELD STRENGTH/SEQUENCE 1.5 and 3.0T/T1 -T2 WI, diffusion-weighted imaging. ASSESSMENT Three radiologists independently assessed major/ancillary features and assigned overall LI-RADS category for every observation. STATISTICAL TESTS Diagnostic performance of LR5/TIV+LR5 for identifying hepatocellular carcinoma (HCC) was compared between contrast agents with a generalized estimating equation. Weighted kappa was performed for interrater reliability. RESULTS The frequency of HCCs among LR1, LR2, LR3, L4, LR5, LRTIV+LR5, and LRM observations were: 0% (all readers), 0-12.5%, 11.4-26.9%, 50-76%, 83.0-95.1%, 83.3-100.0%, and 45.0-65.0%, respectively. Sensitivity of LR5/LRTIV+LR5 for HCC was 59.7-71.4% and specificity 85.0-96.8%. LI-RADS specificity and positive predictive value for observations imaged with gadoxetate was higher than extracellular agent for the most inexperienced reader (R3) (P = 0.009-0.034). IRR for LI-RADS categorization was substantial (k = 0.661). DATA CONCLUSION Increasing numerical LI-RADS 2017 categories demonstrate a greater percentage of HCCs. LR5/TIV+LR5 demonstrates excellent specificity and fair sensitivity for HCC. MRI with gadoxetate in liver transplant candidates may be beneficial for less experienced readers, although further large-scale prospective studies are needed. LEVEL OF EVIDENCE 4 Technical Efficacy: Stage 3 J. Magn. Reson. Imaging 2019;49:e205-e215.
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Affiliation(s)
- Andrea S Kierans
- Department of Radiology, Weill Cornell Medical College, New York City, New York, USA
| | - Jasnit Makkar
- Department of Radiology, Columbia University Medical Center, New York, City, New York, USA
| | - Preethi Guniganti
- Department of Radiology, Weill Cornell Medical College, New York City, New York, USA
| | | | - Michael J Lee
- Department of Pathology, Columbia University Medical Center, New York City, New York, USA
| | - Meredith Pittman
- Department of Pathology, Weill Cornell Medical College, New York City, New York, USA
| | - Gulce Askin
- Department of Biostatistics, Weill Cornell Medical College, New York City, New York, USA
| | - Elizabeth M Hecht
- Department of Radiology, Columbia University Medical Center, New York, City, New York, USA
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Gordic S, Corcuera-Solano I, Stueck A, Besa C, Argiriadi P, Guniganti P, King M, Kihira S, Babb J, Thung S, Taouli B. Evaluation of HCC response to locoregional therapy: Validation of MRI-based response criteria versus explant pathology. J Hepatol 2017; 67:1213-1221. [PMID: 28823713 DOI: 10.1016/j.jhep.2017.07.030] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/25/2017] [Accepted: 07/26/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIMS This study evaluates the performance of various magnetic resonance imaging (MRI) response criteria for the prediction of complete pathologic necrosis (CPN) of hepatocellular carcinoma (HCC) post locoregional therapy (LRT) using explant pathology as a reference. METHODS We included 61 patients (male/female 46/15; mean age 60years) who underwent liver transplantation after LRT with transarterial chemoembolization plus radiofrequency or microwave ablation (n=56), or 90Yttrium radioembolization (n=5). MRI was performed <90days before liver transplantation. Three independent readers assessed the following criteria: RECIST, EASL, modified RECIST (mRECIST), percentage of necrosis on subtraction images, and diffusion-weighted imaging (DWI), both qualitative (signal intensity) and quantitative (apparent diffusion coefficient [ADC]). The degree of necrosis was retrospectively assessed at histopathology. Intraclass correlation coefficient (ICC) and Cohen's kappa were used to assess inter-reader agreement. Logistic regression and receiver operating characteristic analyses were used to determine imaging predictors of CPN. Pearson correlation was performed between imaging criteria and pathologic degree of tumor necrosis. RESULTS A total of 97HCCs (mean size 2.3±1.3cm) including 28 with CPN were evaluated. There was excellent inter-reader agreement (ICC 0.77-0.86, all methods). EASL, mRECIST, percentage of necrosis and qualitative DWI were all significant (p<0.001) predictors of CPN, while RECIST and ADC were not. EASL, mRECIST and percentage of necrosis performed similarly (area under the curves [AUCs] 0.810-0.815) while the performance of qualitative DWI was lower (AUC 0.622). Image subtraction demonstrated the strongest correlation (r=0.71-0.72, p<0.0001) with pathologic degree of tumor necrosis. CONCLUSIONS EASL/mRECIST criteria and image subtraction have excellent diagnostic performance for predicting CPN in HCC treated with LRT, with image subtraction correlating best with pathologic degree of tumor necrosis. Thus, MR image subtraction is recommended for assessing HCC response to LRT. LAY SUMMARY The assessment of hepatocellular carcinoma (HCC) tumor necrosis after locoregional therapy is essential for additional treatment planning and estimation of outcome. In this study, we assessed the performance of various magnetic resonance imaging (MRI) response criteria (RECIST, mRECIST, EASL, percentage of necrosis on subtraction images, and diffusion-weighted imaging) for the prediction of complete pathologic necrosis of HCC post locoregional therapy on liver explant. Patients who underwent liver transplantation after locoregional therapy were included in this retrospective study. All patients underwent routine liver MRI within 90days of liver transplantation. EASL/mRECIST criteria and image subtraction had excellent diagnostic performance for predicting complete pathologic necrosis in treated HCC, with image subtraction correlating best with pathologic degree of tumor necrosis.
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Affiliation(s)
- Sonja Gordic
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, Zurich, Switzerland
| | | | - Ashley Stueck
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Cecilia Besa
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Pamela Argiriadi
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Preethi Guniganti
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Michael King
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Shingo Kihira
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - James Babb
- Bernard and Irene Schwartz Center for Biomedical Imaging, New York University School of Medicine, New York, NY, USA
| | - Swan Thung
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Bachir Taouli
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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Guniganti P, Gonzalez G, Fowler K, Saad N, Vachharajani N, Chapman W. Patterns of necrosis following transarterial chemoembolization (TACE) and correlation with mRECIST outcomes. J Vasc Interv Radiol 2014. [DOI: 10.1016/j.jvir.2013.12.402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Gierada DS, Guniganti P, Newman BJ, Dransfield MT, Kvale PA, Lynch DA, Pilgram TK. Quantitative CT assessment of emphysema and airways in relation to lung cancer risk. Radiology 2011; 261:950-9. [PMID: 21900623 DOI: 10.1148/radiol.11110542] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PURPOSE To determine whether quantitative computed tomographic (CT) measurements of emphysema and airway dimensions are associated with lung cancer risk in a screening population. MATERIALS AND METHODS Institutional review board approval and informed consent for the use of deidentified images were obtained. In this retrospective study, CT scans were analyzed from 279 participants in the CT screening arm of the National Lung Screening Trial who were diagnosed with lung cancer and 279 participants who were not diagnosed with lung cancer after a median follow-up period of 6.6 years. Quantitative CT measurements of emphysema and right upper lobe apical segmental and subsegmental airway dimensions, and multiple patient history-related variables, were compared between the two groups. Significant variables were tested in multivariate models for association with lung cancer by using multiple logistic regression. RESULTS The emphysema index of percentage upper lung volume less than -950 HU had the strongest association with lung cancer (mean, 10.7% [standard deviation, 13.5] in patients vs 7.2% [standard deviation, 10.4] in control subjects; P < .001), but the relationship was weak (R(2) = 0.015, P < .001, c = 0.57). No CT measures of emphysema had an association with lung cancer independent of the patient medical history variables. Airway dimensions were not associated with lung cancer. CONCLUSION Quantitative CT measurements of emphysema but not airway dimensions were only weakly associated with lung cancer, demonstrating no potential practical value for clinical risk stratification.
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Affiliation(s)
- David S Gierada
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S Kingshighway Blvd, Box 8131, St Louis, MO 63110, USA.
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