Influence of Location and Mitotic Index on Prognosis in Patients with Gastrointestinal Stromal Tumors

Gastrointestinal stroma tumors (GIST) arise from the pacemaker, the interstitial Wells of Cajal. These tumors constitute 1 to 3% of gastrointestinal neoplasms, and may occur in each portion of the gastrointestinal tract. The most useful prognostic factors are tumor size, mitotic index, cell structure and location within the gastrointestinal tract. The aim of the study was to assess the chosen prognostic factors (location in the gastrointestinal...