Advanced GIST of The Rectum Treated with Imatinib – Report of a Case and Literature Review. Issue 2 (February 2020) - Pavlovic, Mladen; Radovanovic, Dragce; Zdravkovic, Natasa; Jovanovic, Ivan; Arsenijevic, Nebojsa; Lazic, Dejan; Stankovic, Milos; Milosevic, Bojan; Cvetkovic, Aleksandar; Spasic, Marko; Arsenijevic, Milos; Stojanovic, Bojan