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Toshima T, Rhu J, Yoon YI, Ito T, Uchida H, Hong SK, Reddy MS, Yoshizumi T, Kim JM, Lee SG, Ikegami T, Lee KW. Aborted living-donor liver transplantation in the real-world setting, lessons from 13 937 cases of Vanguard Multi-center Study of International Living Donor Liver Transplantation Group. Am J Transplant 2024; 24:57-69. [PMID: 37517556 DOI: 10.1016/j.ajt.2023.07.011] [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: 11/22/2022] [Revised: 06/05/2023] [Accepted: 07/22/2023] [Indexed: 08/01/2023]
Abstract
There are exceedingly uncommon but clearly defined situations where intraoperative abortions are inevitable in living-donor liver transplantation (LDLT). This study aimed to summarize the cases of aborted LDLT and propose a strategy to prevent abortion or minimize donor damage from both recipient and donor sides. We collected data from a total of 43 cases of aborted LDLT out of 13 937 cases from 7 high-volume hospitals in the Vanguard Multi-center Study of the International Living Donor Liver Transplantation Group and reviewed it retrospectively. Of the 43 cases, there were 24 recipient-related abortion cases and 19 donor-related cases. Recipient-related abortions included pulmonary hypertension (n = 8), hemodynamic instability (n = 6), advanced hepatocellular carcinoma (n = 5), bowel necrosis (n = 4), and severe adhesion (n = 1). Donor-related abortions included graft steatosis (n = 7), graft fibrosis (n = 5), primary biliary cholangitis (n = 3), anaphylactic shock (n = 2), and hemodynamic instability (n = 2). Total incidence of aborted LDLT was 0.31%, and there was no remarkable difference between the centers. A strategy to minimize additional donor damage by delaying the donor's laparotomy or trying to open the recipient's abdomen with a small incision should be effective in preventing some causes of aborted LDLT, such as pulmonary hypertension, advanced cancer, and severe adhesions.
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Affiliation(s)
- Takeo Toshima
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Jinsoo Rhu
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Young-In Yoon
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Takashi Ito
- Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hajime Uchida
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - Suk Kyun Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Mettu Srinivas Reddy
- Institute of Liver Disease and Transplantation, Gleneagles Global Health City, Chennai, India
| | - Tomoharu Yoshizumi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Jong Man Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
| | - Sung-Gyu Lee
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Toru Ikegami
- Department of Surgery, Division of Hepatobiliary and Pancreas Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea.
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Choi J, Choi Y, Hong SY, Suh S, Hong K, Han ES, Lee JM, Hong SK, Yi NJ, Lee KW, Suh KS. Changes in Indices of Steatosis and Fibrosis in Liver Grafts of Living Donors After Weight Reduction. Front Surg 2022; 9:827526. [PMID: 35592121 PMCID: PMC9110767 DOI: 10.3389/fsurg.2022.827526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 03/28/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundA short-term weight reduction program for potential living donors was introduced to reduce the extent of hepatic steatosis prior to liver transplantation. We aimed to investigate changes in non-invasive hepatic steatosis and fibrosis indices among those who completed the program.MethodsAmong 1,950 potential living liver donors between January 2011 and May 2019, 160 living donors joined the weight reduction program. The prospectively collected clinical data of these potential liver donors were analyzed retrospectively. Hepatic steatosis and fibrosis scores were determined using the fatty liver index (FLI), hepatic steatosis index (HSI), and NAFLD fibrosis score (NFS) and compared to MR spectroscopy (MRS) fat fraction results before and after weight reduction.ResultsThirty-nine potential living donors who had undergone MRS both before and after weight reduction were included in the analysis. Their body weight decreased from 78.02 ± 10.89 kg to 72.36 ± 10.38 kg over a mean of 71.74 ± 58.11 days. FLI, HSI, and MRS values decreased significantly from 41.52 ± 19.05 to 24.53 ± 15.93, 39.64 ± 3.74 to 35.06 ± 3.82, and 12.20 ± 4.05 to 6.24 ± 3.36, respectively. No significant decreases in NFS were observed. There was a significant correlation between the extent of HSI change and the extent of MRS change (R2 value = 0.69, P < 0.001), although there was no correlation between MRS and FLI.ConclusionThe weight reduction program significantly improved non-invasive indices of hepatic steatosis over a short period. HSI may allow for prediction of simple decreases in hepatic steatosis.
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Park HJ, Kim KW, Lee J, Park T, Kwon HJ, Song GW, Lee SG. Change in hepatic volume profile in potential live liver donors after lifestyle modification for reduction of hepatic steatosis. Abdom Radiol (NY) 2021; 46:3877-3888. [PMID: 33765175 DOI: 10.1007/s00261-021-03058-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 03/05/2021] [Accepted: 03/09/2021] [Indexed: 11/28/2022]
Abstract
PURPOSE We aimed to evaluate changes in hepatic volume and hemiliver volume percentage in potential liver donors after hepatic steatosis (HS) reduction through lifestyle modification. METHODS Fifty liver donor candidates with HS (macrovesicular fat [MaF] ≥ 20%) underwent abdominal computed tomography (CT) and liver biopsy before (baseline) and after (follow-up) lifestyle modification. According to the change in MaF, subjects were classified as group A (MaF reduction ≥ 20%, n = 25), and group B (MaF reduction < 20%, n = 25). The hepatic volume and hemiliver volume percentage were measured using CT volumetric analysis. RESULTS Volume percentage of the left hemiliver + S1 (over the whole liver) significantly increased at follow-up in group A (P < 0.001) but not in group B (P = 0.598). The absolute volume change of the right hemiliver and its percentage change from the baseline were significantly greater than those of the left hemiliver + S1 in group A (P < 0.007). There were no significant differences in these values in group B (P = 0.064 and 0.507, respectively). The percentage of subjects that earned the benefit of becoming suitable donors from the change in hepatic volume distribution caused by HS improvement was 52.0% (13/25) and 40.0% (10/25) in group A and group B, respectively. Regarding posthepatectomy liver failure, none was identified in group A after donation, whereas 12% (3/25) was identified in group B. CONCLUSION Hepatic volume profile may change considerably in potential liver donors with HS (MaF ≥ 20%) after HS reduction through lifestyle modification. Reevaluation of the hepatic volume is required before liver procurement after lifestyle modification in these subjects.
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Affiliation(s)
- Hyo Jung Park
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-Ro 43-Gil, Songpa-Gu, Seoul, 05505, Republic of Korea
| | - Kyoung Won Kim
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-Ro 43-Gil, Songpa-Gu, Seoul, 05505, Republic of Korea.
| | - Jeongjin Lee
- School of Computer Science and Engineering, Soongsil University, Seoul, Republic of Korea
| | - Taeyong Park
- School of Computer Science and Engineering, Soongsil University, Seoul, Republic of Korea
| | - Heon-Ju Kwon
- Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Gi-Won Song
- Division of Liver Transplantation and Hepatobiliary Surgery, Departments of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Sung-Gyu Lee
- Division of Liver Transplantation and Hepatobiliary Surgery, Departments of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
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Del Chicca F, Richter H, Steger GL, Salesov E, Reusch CE, Kircher PR. Sample strategies for quantification of hepatic fat fraction mean MRI in healthy cats during body weight gain. PLoS One 2020; 15:e0241905. [PMID: 33180808 PMCID: PMC7660519 DOI: 10.1371/journal.pone.0241905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 10/22/2020] [Indexed: 11/26/2022] Open
Abstract
Hepatic fat fraction (HFF) can be non-invasively estimated with magnetic resonance imaging (MRI) multiple echo gradient recalled echo (GRE) sequence. The aim of this study was to test different methods of sampling strategies to quantify the HFF in healthy cats during body weight gain. Twelve healthy adult male cats were examined in a 3 Tesla MRI unit. Sequences included morphological images, and multiple echo GRE sequence. Cats were scanned at the beginning of the study and twice, each 20 weeks apart during body weight gain. HFF was calculated with 5 different methods of sampling on the multiple echo GRE sequence with different number, size and position of regions of interest (ROIs) and by 2 operators. Results indicated that HFF increased with increasing body weight, and the increase was appreciated with all the 5 methods. There was overall excellent agreement (interclass correlation coefficient = 0.820 (95% confidence interval:0.775–0.856)) between the 2 operators. HFF in the left lateral hepatic lobe was lower than in the other analyzed lobes. HFF measured on large free-hand drawn ROIs was higher than HFF measured with smaller ROIs size. This study proves that different sampling methods for quantification of HFF on multiple echo GRE sequence have overall excellent repeatability and ability to appreciate increased HFF.
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Affiliation(s)
- Francesca Del Chicca
- Clinic for Diagnostic Imaging, Department of Diagnostics and Clinical Services, Vetsuisse-Faculty Zurich, Zurich, Switzerland
- * E-mail:
| | - Henning Richter
- Clinic for Diagnostic Imaging, Department of Diagnostics and Clinical Services, Vetsuisse-Faculty Zurich, Zurich, Switzerland
| | - Gian-Luca Steger
- Clinic for Diagnostic Imaging, Department of Diagnostics and Clinical Services, Vetsuisse-Faculty Zurich, Zurich, Switzerland
| | - Elena Salesov
- Clinic of Small Animal Internal Medicine, Vetsuisse-Faculty Zurich, Zurich, Switzerland
| | - Claudia E. Reusch
- Clinic of Small Animal Internal Medicine, Vetsuisse-Faculty Zurich, Zurich, Switzerland
| | - Patrick R. Kircher
- Clinic for Diagnostic Imaging, Department of Diagnostics and Clinical Services, Vetsuisse-Faculty Zurich, Zurich, Switzerland
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Krishnamurthy R, Thompson BL, Shankar A, Gariepy CE, Potter CJ, Fung BR, Hu HH. Magnetic Resonance Elastography of the Liver in Children and Adolescents: Assessment of Regional Variations in Stiffness. Acad Radiol 2020; 27:e109-e115. [PMID: 31412984 DOI: 10.1016/j.acra.2019.07.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/16/2019] [Accepted: 07/18/2019] [Indexed: 12/14/2022]
Abstract
RATIONALE AND OBJECTIVES We describe our experience in measuring parenchyma stiffness across the liver Couinaud segments in lieu of the conventional practice of using a single slice-wise "global" region-of-interest. We hypothesize that the heterogeneous nature of fibrosis can lead to regional stiffness within the organ, and that it can be reflected by Couinaud segment-based magnetic resonance elastography measurements. MATERIALS AND METHODS This retrospective study involved from 173 patients (116 males, 57 females, 1.0-22.5 years, 14.7 ± 3.5 years) who underwent exams between June 2017 and September 2018. Liver stiffness across the eight Couinaud segments was measured in addition to a single-slice global measurement by two analysts. Inter- and intrarater analysis was performed in a subset of 20 cases. Individual segment stiffness values, the average across the segments, and the coefficients of variation (CoV) were compared to global single-slice-derived values using linear and Lin's concordance correlation coefficients. Linear correlations between stiffness values versus age, gender, and body-mass-index (BMI) were also evaluated. RESULTS We observed CoVs ranging from 3.1%-79.2%, 17.2 ± 7.2%. The CoV was not correlated with age or BMI (r2 < 0.01, p = 0.99 for both). The CoV did not differ between males (17.1 ± 5.6%) and females (17.3 ± 9.8%) (p = 0.88). There were no correlations between global stiffness versus age (r2 = 0.02, p = 0.84) or BMI (r2 = 0.03, p = 0.68). A range of 0.58-0.86 was observed for Lin's concordance correlation coefficient between segmental stiffness, the average stiffness across segments, and global stiffness. Segments II and VII had the highest frequency of being the stiffest Couinaud segment. The average stiffness across the segments correlated strongly with the single-slice global measurement (r2 = 0.88, p< 0.01). CONCLUSION There exists potential variations in parenchyma stiffness across the liver Couinaud segments, which may reflect the heterogeneous nature of fibrosis. This variation can potentially provide additional diagnostic and clinical information.
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Affiliation(s)
- Ramkumar Krishnamurthy
- Department of Radiology, Nationwide Children's Hospital, 700 Children's Drive, Columbus, OH 43205
| | - Benjamin L Thompson
- Department of Radiology, Nationwide Children's Hospital, 700 Children's Drive, Columbus, OH 43205
| | - Anand Shankar
- Department of Radiology, Nationwide Children's Hospital, 700 Children's Drive, Columbus, OH 43205
| | - Cheryl E Gariepy
- Department of Gastroenterology and Hepatology and Nutrition, Nationwide Children's Hospital, Columbus, Ohio
| | - Carol J Potter
- Department of Gastroenterology and Hepatology and Nutrition, Nationwide Children's Hospital, Columbus, Ohio
| | - Bonita R Fung
- Department of Pathology and Laboratory Medicine, Nationwide Children's Hospital, Columbus, Ohio
| | - Houchun H Hu
- Department of Radiology, Nationwide Children's Hospital, 700 Children's Drive, Columbus, OH 43205.
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Park HJ, Kim KW, Kwon JH, Lee J, Park T, Kwon HJ, Song GW, Lee SG. Lifestyle Modification Leads to Spatially Variable Reduction in Hepatic Steatosis in Potential Living Liver Donors. Liver Transpl 2020; 26:487-497. [PMID: 32061052 DOI: 10.1002/lt.25733] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 01/09/2020] [Indexed: 02/07/2023]
Abstract
The spatial variability of hepatic fat reduction in potential living liver donors with hepatic steatosis (HS) who undergo lifestyle modification has not been investigated. Here, we aimed to examine the intrasegmental and intersegmental variability of changes in liver attenuation on computed tomography (CT) in potential living liver donors with HS after diet modification and exercise. A total of 87 living liver donor candidates (30.5 ± 7.0 years; 74 males) with biopsy-proven macrovesicular fat (MaF) ≥10% were included. All underwent diet modification and exercise to improve HS, baseline and follow-up unenhanced CT scans, and liver biopsies. Attenuation and its variability (mean and standard deviation, respectively, in Hounsfield units) in segmental, lobar, superficial, deep, and whole areas of the liver were measured across 32 different regions of interest on both baseline and follow-up CT. At baseline, the right lobe and superficial areas of liver showed significantly lower and more variable attenuation than left lobe and deep areas. Greater variability was noted in patients with more severe HS. Mean interval changes in liver attenuation and variability before and after diet modification and exercise were 13.7 (range, -10.6 to 46.2) and 4.7 (1.6-10.6), respectively. The mean interval change in liver attenuation was significantly higher in the right lobe than in the left (14.7 versus 12.7; P < 0.001), and in superficial areas than in deep areas (14.0 versus 13.4; P = 0.02). Greater variability and larger interval changes in liver attenuation were noted in those who responded (≥20% decrease in MaF) to diet modification and exercise than in those who did not. In conclusion, potential living liver donors with HS show significant intrasegmental and intersegmental variability in hepatic fat reduction on CT before and after diet modification and exercise.
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Affiliation(s)
- Hyo Jung Park
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Kyoung Won Kim
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Jae Hyun Kwon
- Division of Liver Transplantation and Hepatobiliary Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Jeongjin Lee
- School of Computer Science and Engineering, Soongsil University, Seoul, Korea
| | - Taeyong Park
- School of Computer Science and Engineering, Soongsil University, Seoul, Korea
| | - Heon-Ju Kwon
- Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Gi-Won Song
- Division of Liver Transplantation and Hepatobiliary Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Sung-Gyu Lee
- Division of Liver Transplantation and Hepatobiliary Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Sherif FM, Elmogy SA, EL-wahab RMA, Wahab MA. Utility of magnetic resonance proton density fat fraction technique in quantification of liver fat in living donors for liver transplantation. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2019. [DOI: 10.1186/s43055-019-0061-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Hepatic steatosis in living donors for liver transplantation causes morbidity of both donor and recipient. This study aims at evaluating magnetic resonance proton density fat fraction technique (MR PDFF) in quantitative evaluation of living donor’s hepatic steatosis compared to histopathology.
Results
The examined potential living liver donors’ liver biopsies revealed hepatic steatosis < 5% (grade 0) in 40 donors and 5–10% (grade 1) in 7 donors. MR PDFF technique with IDEAL sequence showed excellent results for prediction and quantitative evaluation of liver fat with sensitivity, specificity, and accuracy of 85.7%, 97.5%, and 95.7%, respectively, compared to histopathology (95% confidence interval 0.98–1.01). There was an excellent inter-reader agreement between both readers in estimation of MR liver fat fraction (r = 0.969 at 95% confidence interval 0.946–0.983).
Conclusion
Noninvasive hepatic MR PDFF technique with IDEAL sequence is a precise reliable technique for pre-operative quantitative assessment of hepatic steatosis in potential living liver donors.
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Visentin S, Michel G, Oudin C, Cousin B, Gaborit B, Abdesselam I, Maraninchi M, Nowicki M, Valéro R, Guye M, Bernard M, Auquier P, Chambost H, Alessi MC, Béliard S. Lipodystrophy-like features after total body irradiation among survivors of childhood acute leukemia. Endocr Connect 2019; 8:349-359. [PMID: 30844749 PMCID: PMC6454302 DOI: 10.1530/ec-18-0497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Accepted: 03/07/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND/OBJECTIVE The number of long-term survivors of childhood acute leukemia (AL) is substantially growing. These patients are at high risk for metabolic syndrome (MS), especially those who received total body irradiation (TBI). The consequences of children's irradiation on adipose tissue (AT) development in adulthood are currently unknown. The objective of this study is to assess the impact of TBI on AT of childhood AL survivors. DESIGN We compared the morphological and functional characteristics of AT among survivors of childhood AL who developed MS and received (n = 12) or not received (n = 12) TBI. SUBJECTS/METHODS Body fat distribution and ectopic fat stores (abdominal visceral and liver fat) were evaluated by DEXA, MRI and 1H-spectroscopy. Functional characteristics of subcutaneous AT were investigated by studying gene expression and pre-adipocyte differentiation in culture. RESULTS Patients who have received TBI exhibited a lower BMI (minus 5 kg/m2) and a lower waist circumference (minus 14 cm), especially irradiated women. Despite the lower quantity of intra-abdominal AT, irradiated patient displayed a nearly two-fold greater content of liver fat when compared to non-irradiated patient (17 vs 9%, P = 0.008). These lipodystrophic-like features are supplemented by molecular abnormalities in subcutaneous AT of irradiated patients: decrease of gene expression of SREBP1 (minus 39%, P = 0.01) and CIDEA (minus 36%, P = 0.004) and a clear alteration of pre-adipocyte differentiation. CONCLUSIONS These results strongly support the direct effect of irradiation on AT, especially in women, leading to specific nonalcoholic fatty liver disease, despite lower BMI. A long-term appropriate follow-up is necessary for these patients.
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Affiliation(s)
- Sandrine Visentin
- Department of Pediatric Hematology and Oncology, AP-HM, Timone Enfants Hospital, Marseille, France
- Aix Marseille University, INSERM, INRA, C2VN, Marseille, France
- Correspondence should be addressed to S Visentin:
| | - Gérard Michel
- Department of Pediatric Hematology and Oncology, AP-HM, Timone Enfants Hospital, Marseille, France
- Research Unit EA 3279 and Department of Public Health, Aix-Marseille University, Marseille, France
| | - Claire Oudin
- Department of Pediatric Hematology and Oncology, AP-HM, Timone Enfants Hospital, Marseille, France
- Research Unit EA 3279 and Department of Public Health, Aix-Marseille University, Marseille, France
| | - Béatrice Cousin
- STROMALab, Université de Toulouse, CNRS ERL5311, EFS, INP-ENVT, INSERM U1031, UPS, Toulouse, France
| | | | - Inès Abdesselam
- Aix Marseille University, INSERM, INRA, C2VN, Marseille, France
| | | | - Marion Nowicki
- Aix Marseille University, INSERM, INRA, C2VN, Marseille, France
| | - René Valéro
- Aix Marseille University, INSERM, INRA, C2VN, Marseille, France
- Nutrition, Metabolic Diseases and Endocrinology Department, AP-HM, La Conception Hospital, Marseille, France
| | | | - Monique Bernard
- AP-HM, Timone, CEMEREM, Marseille, France
- Aix-Marseille University, CNRS, CRMBM, Marseille, France
| | - Pascal Auquier
- Research Unit EA 3279 and Department of Public Health, Aix-Marseille University, Marseille, France
| | - Hervé Chambost
- Department of Pediatric Hematology and Oncology, AP-HM, Timone Enfants Hospital, Marseille, France
| | | | - Sophie Béliard
- Aix Marseille University, INSERM, INRA, C2VN, Marseille, France
- Nutrition, Metabolic Diseases and Endocrinology Department, AP-HM, La Conception Hospital, Marseille, France
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Lee H, Jun DW, Kang BK, Nam E, Chang M, Kim M, Song S, Yoon BC, Lee HL, Lee OY, Choi HS, Lee KN. Estimating of hepatic fat amount using MRI proton density fat fraction in a real practice setting. Medicine (Baltimore) 2017; 96:e7778. [PMID: 28816961 PMCID: PMC5571698 DOI: 10.1097/md.0000000000007778] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The recently developed magnetic resonance imaging (MRI) proton density fat fraction (PDFF) allows measurement of the fat in all segments of hepatic tissue. However, it is time consuming and inconvenient to measure each segment repeatedly. Moreover, volume of each segment also should be adjusted with arithmetic mean of the selected segments when total amount of liver fat is estimated. Therefore, we try to develop a clinically-relevant and applicable method of estimating hepatic fat in PDFF image.A total of 164 adults were enrolled. We addressed the measurement frequency and segment selection to determine the optimal method of measuring intrahepatic fat. Total hepatic fat was estimated by the weighted mean of each segment reflecting their respective segmental volumes. We designed 2 models. In Model 1, we determined the segment order by which the mean was closest to the whole weighted mean. In Model 2, we determined the segment order by which the arithmetic mean of the selected segments was closest to the whole weighted mean.Fat fraction (FF) was most important risk factor of hepatic heterogeneity in multivariable analysis (β = 0.534, P < .001). In severe fatty liver (FF > 22.1%), intrahepatic fat variability was 2.47% (1.16-6.26%). The arithmetic mean total intrahepatic FF was 12.66%. But the weighted mean that applied to each segmental volume was 12.90%. In Model 1, arithmetic mean of segments 4 and 5 was closest to the total estimated hepatic fat amount. However, when we added segment 8, the mean of segments 4, 5, and 8 was significantly different from the estimated total hepatic fat amount (P = .0021). In Model 2, arithmetic mean of segments 4 and 5 was closest to the total estimated hepatic fat amount. There was a significant reduction in variability between segment 4 and segments 4 and 5 (P < .0001).Averaging the mean hepatic FF of segments 4 and 5 was the most reasonable method for estimating total intrahepatic fat in practice.
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Affiliation(s)
| | | | | | - Eunwoo Nam
- Department of Biostatistical Consulting and Research Lab, School of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Misoo Chang
- Department of Biostatistical Consulting and Research Lab, School of Medicine, Hanyang University, Seoul, Republic of Korea
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Nugroho A, Kim OK, Lee KW, Song S, Kim H, Hong SK, Yoon KC, Kim HS, Choi Y, Lee HW, Yi NJ, Suh KS. Evaluation of donor workups and exclusions in a single-center experience of living donor liver transplantation. Liver Transpl 2017; 23:614-624. [PMID: 28294533 DOI: 10.1002/lt.24762] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 01/27/2017] [Indexed: 02/07/2023]
Abstract
The process of evaluating potential donors in liver transplantation is important to ensure donor safety and provide optimal recipient outcomes. However, there has been no report about donor exclusion rates and reasons for such exclusion in Korea. In this study, we aimed to elucidate the outcomes of potential living liver donor evaluation in a major living donor liver transplantation center. From July 2011 to June 2015, prospectively collected data of 726 potential donors for 588 matched recipients were subsequently evaluated. Among 726 potential donors, 374 potential donors (51.5%) finally reached donation; 352 potential donors (48.5%) were excluded for various reasons. Donor reasons were 29.8%, including medical problems, withdrawal of consent, graft volume issues, and identification of a better suitable donor. Recipient reasons were 20.7%, including recipient death or recovery, allocation to deceased donor, and progressions of hepatocellular carcinoma. A total of 38 (5.2%) potential donors had a fatty liver. Among them, 15 (39.5%) potential donors tried short-term weight reduction and eventually were able to donate. In conclusion, the main reasons for donor exclusion were medical problems and withdrawal of consent. Therefore, thorough medical screening and careful examination for donor voluntarism are important in the donor evaluation process. Liver Transplantation 23 614-624 2017 AASLD.
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Affiliation(s)
- Adianto Nugroho
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Ok-Kyung Kim
- Organ Transplant Center, Seoul National University Hospital, Seoul, South Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea.,Organ Transplant Center, Seoul National University Hospital, Seoul, South Korea
| | - Sanghee Song
- Organ Transplant Center, Seoul National University Hospital, Seoul, South Korea
| | - Hyeyoung Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea.,Organ Transplant Center, Seoul National University Hospital, Seoul, South Korea
| | - Suk Kyun Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Kyung Chul Yoon
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Hyo-Sin Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Hae Won Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea.,Organ Transplant Center, Seoul National University Hospital, Seoul, South Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea.,Organ Transplant Center, Seoul National University Hospital, Seoul, South Korea
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Mussin N, Sumo M, Lee KW, Choi Y, Choi JY, Ahn SW, Yoon KC, Kim HS, Hong SK, Yi NJ, Suh KS. The correlation between preoperative volumetry and real graft weight: comparison of two volumetry programs. Ann Surg Treat Res 2017; 92:214-220. [PMID: 28382294 PMCID: PMC5378562 DOI: 10.4174/astr.2017.92.4.214] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 11/01/2016] [Accepted: 11/01/2016] [Indexed: 12/16/2022] Open
Abstract
Purpose Liver volumetry is a vital component in living donor liver transplantation to determine an adequate graft volume that meets the metabolic demands of the recipient and at the same time ensures donor safety. Most institutions use preoperative contrast-enhanced CT image-based software programs to estimate graft volume. The objective of this study was to evaluate the accuracy of 2 liver volumetry programs (Rapidia vs. Dr. Liver) in preoperative right liver graft estimation compared with real graft weight. Methods Data from 215 consecutive right lobe living donors between October 2013 and August 2015 were retrospectively reviewed. One hundred seven patients were enrolled in Rapidia group and 108 patients were included in the Dr. Liver group. Estimated graft volumes generated by both software programs were compared with real graft weight measured during surgery, and further classified into minimal difference (≤15%) and big difference (>15%). Correlation coefficients and degree of difference were determined. Linear regressions were calculated and results depicted as scatterplots. Results Minimal difference was observed in 69.4% of cases from Dr. Liver group and big difference was seen in 44.9% of cases from Rapidia group (P = 0.035). Linear regression analysis showed positive correlation in both groups (P < 0.01). However, the correlation coefficient was better for the Dr. Liver group (R2 = 0.719), than for the Rapidia group (R2 = 0.688). Conclusion Dr. Liver can accurately predict right liver graft size better and faster than Rapidia, and can facilitate preoperative planning in living donor liver transplantation.
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Affiliation(s)
- Nadiar Mussin
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Marco Sumo
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea.; Department of Surgery, The Medical City Hospital, Manila, Philippines
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jin Yong Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Sung-Woo Ahn
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung Chul Yoon
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Hyo-Sin Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Suk Kyun Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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12
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Monti L, Soglia G, Tomà P. Imaging in pediatric liver transplantation. Radiol Med 2016; 121:378-90. [DOI: 10.1007/s11547-016-0628-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 01/31/2016] [Indexed: 12/11/2022]
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