A Case of Synchronous-Metachronous Cancer of the Rectum, Stomach, Pharynx, Esophagus and Small Intestine

A 71-year-old man presented with the chief complaint of fecal occult blood. Based on imaging studies, the patient was diagnosed advanced rectal cancer. He received laparoscopic low anterior resection. Three months after the rectal cancer operation, upper gastrointestinal endoscopy revealed gastric cancer. The patient had a diagnosis of synchronous cancer of the rectum and stomach, and received laparoscopic distal gastrectomy. Two years after the rectal cancer operation, liver metastasis(S4)was detected and resected. Three years after the rectal cancer operation, esophageal cancer and laryngeal cancer were detected synchronously and chemoradiotherapy was performed. Five years after the rectal cancer operation, small intestinal cancer with infiltration of descending colon and esophagus cancer were detected synchronously. Small intestinal resection and Hartmann procedure were performed for small intestinal cancer. ESD was performed for esophageal cancer. Six years after the rectal cancer operation, FDG-PET showed the peritracheal lymph node metastasis, lumbar spine metastasis and local recurrence in the pelvis. Currently, systemic chemotherapy is undergoing. We report a rare case of synchronous- metachronous cancer of the rectum, stomach, pharynx, esophagus and small intestine.