[A Case of Laparoscopic Resection Following Preoperative Chemoradiotherapy of a Locally Recurrent Rectal Cancer after a Prior Endoscopic Curative Resection].

A man in his seventies underwent endoscopic mucosal resection(EMR)of a rectal cancer 3 years ago. Histopathological examination showed that the specimen had been resected curatively. However, a routine follow-up colonoscopy revealed a submucosal mass on the EMR scar. Computed tomography imaging revealed a mass in the posterior wall of the rectum, with suspected invasion of the sacrum. We performed a biopsy during endoscopic ultrasonography and diagnosed a local recurrence of the rectal cancer. After preoperative chemoradiotherapy(CRT), laparoscopic low anterior resection with ileostomy was performed. Histopathological examination revealed invasion of the rectal wall from the muscularis propria to the adventitia and tissue fibrosis at the radial margin, which was devoid of cancerous cells. Subsequently, the patient received adjuvant chemotherapy with uracil/tegafur and leucovorin for 6 months. No recurrence has been reported over a postoperative follow- up period of 4 years. Preoperative CRT may be an effective treatment for locally recurrent rectal cancer after endoscopic resection.