A rare case of hepatocellular carcinoma with bile duct invasion diagnosed by peroral cholangioscopy.
Video 1Peroral cholangioscopy showed a 20-mm-diameter, stalked, floating, round mass in the hilar region. The surface of the tumor was covered with white fur, and the tumor tissue was partially exposed in a map-like pattern. The mass was penetrable even with a guidewire, and it bled easily. Biopsies were performed using biopsy forceps, and the tumor bled easily even with biopsy.
['Ito|Risako|R|', 'Kobayashi|Masanori|M|', 'Ohtsuka|Kazuo|K|', 'Tanabe|Minoru|M|', 'Okamoto|Ryuichi|R|']
HCC, hepatocellular carcinoma POCS, peroral cholangioscopy