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Updated: Jul 20, 2026

Endoscopic Ultrasound-Guided Biliary Drainage: Endoscopic Ultrasound-Guided Hepaticogastrostomy in Malignant Biliary Obstruction
Published on: March 25, 2022
Magnetic resonance findings of bile duct adenoma with calcification
Eriko Maeda1, Kazuhito Uozumi, Nobuyuki Kato
1Department of Radiology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Tokyo 113-8655, Japan. emaeda-tky@umin.ac.jp
Abstract:
Computed tomographic (CT) and magnetic resonance (MR) appearances of bile duct adenoma (BDA in a patient who underwent partial hepatectomy of segment 8 are presented. BDA showed a ring-shaped hyperdense area suggesting calcification and ring enhancement on CT. It appeared hypointense on both T1- and T2-weighted MR images. Preoperatively, the diagnoses considered included metastatic carcinoma, cholangiocarcinoma, tuberculosis, and rare tumors such as epithelioid hemangioendothelioma. The radiological findings were confirmed by pathological investigation.
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