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.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8350986PMC
http://dx.doi.org/10.1016/j.vgie.2021.04.007DOI Listing

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