Lee SY, Kingham TP, LaGratta MD, Jessurun J, Cherqui D, Jarnagin WR, Kluger MD. PET-avid hepatocellular adenomas: incidental findings associated with HNF1-α mutated lesions.
HPB (Oxford) 2016;
18:41-8. [PMID:
26776850 PMCID:
PMC4750225 DOI:
10.1016/j.hpb.2015.07.001]
[Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 07/06/2015] [Accepted: 07/07/2015] [Indexed: 02/06/2023]
Abstract
BACKGROUND
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.
METHODS
A retrospective review of four institutions' database was performed to identify the PET-avid HCAs with clinico-pathological correlation.
RESULTS
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.
CONCLUSION
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.
Collapse