Multicystic Biliary Hamartoma With Xanthogranulomatous Inflammation on 18F-FDG PET/CT.

Shono, Nahomi; Otomi, Yoichi; Otsuka, Hideki; Shinya, Takayoshi; Harada, Masafumi · Clin Nucl Med · 2022

case_report · Level V

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Abstract

A 70-year-old man with a liver tumor was pathologically diagnosed with multicystic biliary hamartoma with xanthogranulomatous inflammation. Plain CT revealed an inhomogeneous low-density liver tumor, measuring 43 × 35 mm. Dynamic contrast-enhanced CT revealed a cyst, measuring approximately 15 mm, with a ring-shaped enhancement, within the tumor. There was delayed enhancement on the outer portion of the tumor. Mild peripheral bile duct dilation was also observed. 18F-FDG PET/CT showed focal high uptake with an SUVmax of 5.2 near the cyst. The findings of this case mimicked that of intrahepatic cholangiocellular carcinoma.

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