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Am J Surg Pathol. 2011 Jun;35(6):927-32. doi: 10.1097/PAS.0b013e318218ca3f.

Hepatocellular carcinoma arising in a pigmented telangiectatic adenoma with nuclear β-catenin and glutamine synthetase positivity: case report and review of the literature.

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  • 1Department of Pathology, Mount Sinai School of Medicine, One Gustave L. Levy Place, New York, NY 10029, USA. jaclyn.hechtman@mountsinai.org

Abstract

Telangiectatic hepatocellular adenoma is a rare, recently recognized subtype of hepatocellular adenoma that is often underrecognized by pathologists. We report a case of hepatocellular carcinoma arising within a pigmented telangiectatic hepatocellular adenoma in a noncirrhotic man with diffuse glutamine synthetase and nuclear β-catenin positivity. This case highlights malignant transformation of telangiectatic adenomas, and describes a previously unreported association between pigment deposition and telangiectatic adenoma. Radiology, gross pathology, and histopathology are shown. Review of the literature with attention to β-catenin and glutamine synthetase staining, malignant transformation, patient characteristics, the presence of Dubin-Johnson-like pigment, and genetic characteristics of telangiectatic adenomas are discussed.

PMID:
21572265
[PubMed - indexed for MEDLINE]
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