Difficulty in Diagnosing Gastrointestinal Stromal Tumors: Literature Review and Case Report. - Pacilli, Mario; Gerundo, Alberto; Pavone, Giovanna; De Filippi, Raffaele; Quazzico, Andrea; Fersini, Alberto; Ambrosi, Antonio; Tartaglia, Nicola (World Journal of Laparoscopic Surgery, 2024)