CT Findings of Ciliated Hepatic Foregut Cyst Mimicking Metastasis: A Case Report

A 69-year-old man was presented with a one-month history of abdominal discomfort. A retroperitoneal mass had been detected by on ultrasonography at another hospital, from where he was transferred to our hospital for further evaluation. The results of routine laboratory tests, including blood chemistry, urinalysis, and liver function was normal. Computed tomography (CT) examination of the abdomen revealed large posterior mediastinal and retroperitoneal masses, and in the course of examination, a single hepatic mass lesion was discovered. The posterior mediastinal lesion was showed to be a lobulated, well-defined tumor with neural foraminal extension at the right of the T11-L1 level, and measured 8×6×4 cm. The retroperitoneal mass was revealed as a smoothly marginated tumor at the right of the L3-4 level, and measured 4×4×3 cm. An additional lesion was located at the right of the L1-2 level, and measured 4×3×2 cm. The paravertebral mass with neural foraminal extension, interiors of these tumors were homogeneous and showed no enhancement (Fig. 1A). In the liver, the additional lesion presented at the medial segment of its left lobe was revealed as a well-demarcated mass measuring 2.5×2.5 cm. Unenhanced CT showed a slightly J Korean Radiol Soc 2000;43:77-80