PMID- 37245629 OWN - NLM STAT- MEDLINE DCOM- 20230815 LR - 20230817 IS - 1532-8392 (Electronic) IS - 0046-8177 (Linking) VI - 138 DP - 2023 Aug TI - Clinicopathologic characterization of hepatocellular adenomas in men: a multicenter experience. PG - 24-33 LID - S0046-8177(23)00121-1 [pii] LID - 10.1016/j.humpath.2023.05.010 [doi] AB - Hepatocellular adenomas (HCAs) are benign liver neoplasms which most commonly present in women in their reproductive age. In men, they are rare and have a higher risk of malignant transformation to hepatocellular carcinoma (HCC). Here we present our multicenter experience with HCA in men in the United States. A total of 27 HCA cases were included, with a mean age of presentation of 37 years (range, 9-69 years) and a mean size of 6.8 cm (range, 0.9-18.5 cm). Based on the 2019 World Health Organization classification, the most common subtype identified was inflammatory HCA (IHCA; 10 cases, 37.0%) followed by unclassified HCA (UHCA; 7 cases, 25.9%), HNF1A-inactivated HCA (H-HCA; 6 cases, 22.2%), beta-catenin-activated IHCA (b-IHCA; 3 cases, 11.1%), and beta-catenin-activated HCA (b-HCA; 1 case, 3.7%). Six additional cases diagnosed as hepatocellular neoplasm of uncertain malignant potential (HUMP) were also included in the study. These cases presented in a mean age of 46 years (range, 17-64 years) and a size of 10.8 cm (range, 4.2-16.5 cm). We evaluated the significance of androgen receptor (AR) expression by immunohistochemistry (IHC); of the 16 cases with materials available, 8 were considered positive using the Allred score system (2 IHCA, 2 H-HCA, 1 UHCA, and 3 HUMP). Of the total cases, 12 were diagnosed on biopsies, for which follow-up information is available for 7, and none of them show evidence of malignant transformation. Of the 21 resection cases, a concomitant well-differentiated HCC within the same lesion was identified in 5 cases (23.8%), which were diagnosed as HCA (n = 4) or HUMP (n = 1). Overall, 15% of cases in our entire cohort of HCA and HUMP showed concomitant HCC, while none of the 7 biopsy cases showed any malignant transformation on follow-up (range, 22-160 months; mean, 61.8 months). CI - Copyright (c) 2023 Elsevier Inc. All rights reserved. FAU - Gonzalez, Ivan A AU - Gonzalez IA AD - Department of Pathology, Yale University, New Haven, CT, 06520, USA. FAU - Torbenson, Michael AU - Torbenson M AD - Division of Anatomic Pathology, Mayo Clinic, Rochester, MN, 55901, USA. FAU - Sharifai, Nima AU - Sharifai N AD - Department of Pathology & Immunology, Washington University School of Medicine, St. Louis, MO, 63110, USA. FAU - Byrnes, Kathleen AU - Byrnes K AD - Department of Pathology & Immunology, Washington University School of Medicine, St. Louis, MO, 63110, USA. FAU - Chatterjee, Deyali AU - Chatterjee D AD - Department of Pathology & Immunology, Washington University School of Medicine, St. Louis, MO, 63110, USA. FAU - Kakar, Sanjay AU - Kakar S AD - Department of Pathology, University of California, San Francisco, San Francisco, CA, 94143, USA. FAU - Yeh, Matthew M AU - Yeh MM AD - Department of Laboratory Medicine and Pathology, University of Washington School of Medicine, Seattle, WA, 98195, USA. FAU - Wu, Tsung-Teh AU - Wu TT AD - Division of Anatomic Pathology, Mayo Clinic, Rochester, MN, 55901, USA. FAU - Zhang, Xuchen AU - Zhang X AD - Department of Pathology, Yale University, New Haven, CT, 06520, USA. FAU - Jain, Dhanpat AU - Jain D AD - Department of Pathology, Yale University, New Haven, CT, 06520, USA. Electronic address: dhanpat.jain@yale.edu. LA - eng PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20230526 PL - United States TA - Hum Pathol JT - Human pathology JID - 9421547 RN - 0 (beta Catenin) SB - IM MH - Male MH - Humans MH - Female MH - Child MH - Adolescent MH - Young Adult MH - Adult MH - Middle Aged MH - Aged MH - *Adenoma, Liver Cell MH - *Liver Neoplasms MH - *Carcinoma, Hepatocellular MH - beta Catenin MH - Biopsy MH - *Precancerous Conditions OTO - NOTNLM OT - Androgen OT - Atypical hepatocellular neoplasm OT - Hepatocellular adenoma OT - Hepatocellular carcinoma OT - Hepatocellular neoplasm OT - Men EDAT- 2023/05/29 00:42 MHDA- 2023/08/15 06:42 CRDT- 2023/05/28 19:24 PHST- 2023/04/13 00:00 [received] PHST- 2023/05/18 00:00 [revised] PHST- 2023/05/22 00:00 [accepted] PHST- 2023/08/15 06:42 [medline] PHST- 2023/05/29 00:42 [pubmed] PHST- 2023/05/28 19:24 [entrez] AID - S0046-8177(23)00121-1 [pii] AID - 10.1016/j.humpath.2023.05.010 [doi] PST - ppublish SO - Hum Pathol. 2023 Aug;138:24-33. doi: 10.1016/j.humpath.2023.05.010. Epub 2023 May 26.