A 43-year-old female presented to our department with hemoglobin of 3.4 g/dl. She denied gastrointestinal bleeding or weight loss. An upper endoscopy revealed an ulcerative lesion on the greater curvature of the gastric body with two visible clots. Two hemoclips were needed to attain hemostasis, as one of the biopsies of the tumor caused active spurting bleeding. An abdominal computed tomography (CT) demonstrated a well-circumscribed intramural mass arising in the gastric wall, measuring 65 x 50 x 90 mm, with marked internal vascularity and extraluminal component associated. The biopsies identified areas of mature and immature plasmocytes.