PerspectivePublished 23 September 2026Multimodal endoscopic diagnosis in biliary oncology: integrating EUS-guided tissue acquisition and cholangioscopy for personalized cancer carePetko Karagyozov · Nadica Male · Kalina Panova · Stela NikolovaFrontiers in Gastroenterologydoi 10.3389/fgstr.2026.1924535