Oncological Outcome After Diagnostic Biopsies in Gastrointestinal Stromal Tumors: A Retrospective Cohort Study.

Objective:To analyze whether the route of preoperative biopsy influences oncological outcome in GIST patients.Summary of Background Data:Preoperative biopsies are widely used for diagnosing GIST. Little is known about the risk of tumor seeding after different routes of biopsy.Methods:Patients who un