“…The clinical symptoms of GM are nonspecific, [9] including dyspepsia, anorexia, abdominal distension, black stool, nausea, vomiting, upper abdominal pain, early satiety, and bleeding, and even gastric perforation. [10][11][12] However, the most common symptom is abdominal pain. Our patient presented with a 6-month history of abdominal distension and anal pendant expansion, which may be caused by colon cancer.…”