GASTROINTESTINAL STROMAL TUMOR: OUTCOMES OF THE PAST DECADE IN A REFERENCE INSTITUTION IN SOUTHERN BRAZIL.

Aim: Gastrointestinal stromal tumor (GIST) is the most common mesenchymal neoplasm of the digestive tract and has a wide variation in biological behavior; surgical resection remains the main form of treatment. This study aimed to analyze clinicopathological characteristics and survival of patients with GIST in a reference institution for oncological diseases.

Methods: An observational, longitudinal, and retrospective study of patients diagnosed with GIST from January 2011 to January 2020 was carried out by analyzing epidemiological and clinical variables, staging, surgical resection, recurrence, use of imatinib, and curves of overall survival (OS) and disease-free survival (DFS).