PET-avid hepatocellular adenomas: incidental findings associated with HNF1-α mutated lesions

HPB : the Official Journal of the International Hepato Pancreato Biliary Association
Ser Yee LeeMichael D Kluger

Abstract

Hepatocellular adenoma (HCA) is the second most common benign liver neoplasm and occurs predominantly in women in their reproductive years. Positron emission tomography (PET) using [18F] fluorodeoxyglucose (FDG) is commonly used in cancer staging, surveillance and evaluation of treatment response. PET-avid HCA are rare and can be falsely interpreted as malignancies. A retrospective review of four institutions' database was performed to identify the PET-avid HCAs with clinico-pathological correlation. Nine patients with histological proven PET-avid HCA was identified. Eight out of 9 patients were female with a median age at diagnosis of 44 years. All patients' tumors with available histological subtyping (8/8) were HNF1-α mutated and had no inflammatory changes; 6 out the 9 lesions had prominent (>50%) steatotic changes. Hepatocellular adenomas, specifically the HNF1-α subtype, can cause false-positive PET findings when seeking to identify malignancy. Concomitantly, PET-CT may have the potential to identify the HCA histopathologic variant with the lowest malignant and hemorrhagic potential.

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May 5, 2017·World Journal of Hepatology·Willy LiuOlivier Detry
Apr 5, 2020·Japanese Journal of Radiology·Kumi OzakiToshifumi Gabata
Aug 16, 2018·Journal of Gastrointestinal Surgery : Official Journal of the Society for Surgery of the Alimentary Tract·Diamantis I TsilimigrasTimothy M Pawlik
Feb 9, 2021·Abdominal Radiology·Jason R YoungAyse T Kendi

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