Case Report: Duodenal gastrointestinal stromal tumor misdiagnosed as tumor located on the major duodenal papilla leading to fatal gastrointestinal bleeding in a child

Duodenal GISTs in pediatric patients often present asymptomatically but can manifest with severe complications such as fatal gastrointestinal bleeding. The tumor's morphology and location can obscure the major papilla, complicating preoperative diagnosis and influencing surgical decision-making. Comprehensive preoperative evaluation and careful intraoperative exploration are critical for accurate diagnosis and optimal management.