Multiple primary cancers with gastrointestinal malignant tumors as the first manifestation: Three case reports and review of literature

Figure 2 Main examination picture results of Case 2. A-C: Preoperative endoscopy: Esophagus: A nodular, rough mass that was brittle and bled easily. Gastric body: A 1.5 cm superficial lesion with a depressed center and a rough surface, accompanied by shallow ulceration. Colon (Hepatic Flexure): A mass with a peripheral ulcer, eroded surface, and surrounding mucosa that was elevated like a dike, firm, and prone to bleeding; D: Preoperative abdominal computed tomography (CT); E and F: Intraoperative gross specimens; G and H: Postoperative pathology (HE, × 100, × 200); I: Postoperative review CT.