A Case of Rectal Cancer with Lymph Node Metastases Beyond the Anastomotic Site of a Past Sigmoidectomy

Abstract

The case of an 85-year-old woman who had undergone laparoscopic sigmoidectomy for sigmoid colon cancer (pStage IIa) is presented. Four years after the sigmoidectomy, locally advanced rectal cancer with right lateral pelvic lymph node metastases was detected, and laparoscopic abdominoperineal resection with D1LD1(Rt-2, Lt-0) was performed. The pathological examination showed a pT3N3M0 (pStage IIIc) tumor, which included two mesenteric lymph node (#241) metastases at the oral side of the previous anastomosis. Since there have been few reports of mesenteric lymph node metastases beyond the anastomotic site of previous surgery, this case is reported along with a review of the relevant literature.