Gastrointestinal stromal tumors represent the majority of mesenchymal tumors of the gastrointestinal tract. A palpable abdominal mass on physical examination is an extremely rare situation in this diagnosis. These tumors are generally located in the stomach and proximal part of the small intestine, but they can also be found beyond the alimentary tract, i.e. the omentum, mesentery or peritoneum. In this article we present the case history of a 63-year-old female with irrelevant past medical history admitted to the University Hospital for surgical treatment of a palpable abdominal wall mass. Histopathological examination revealed characteristic features for gastrointestinal stromal tumor with unspecific localization. Postoperative hospital stay and 3-month follow-up were uneventful with no reported complaints. We present this case due to the rare occurrence of this kind of lesion and the interesting presentation of this particular case.