Metastasis to the sigmoid or sigmoid mesenteric lymph nodes from rectal cancer.

Objective: We analyzed metastases to the sigmoid and sigmoid mesenteric lymph nodes from rectal cancer.

Background: It has been reported that rectal cancer spreads upward and lateral. However, metastasis to the sigmoid mesenteric or sigmoid nodes from rectal cancer has been rarely reported.

Laparoscopic resection of extraperitoneal rectal cancer: a comparative analysis with open resection.

Purpose: The aim of this study was to compare the outcomes of laparoscopic surgery with those of open resection in patients with extraperitoneal rectal cancer.

Methods: Five hundred forty-four patients with extraperitoneal rectal cancer who underwent curative resection between 1996 and 2007 were included. Patients were divided into a laparoscopic surgery group (LAP, n = 170) and an open surgery group (OPEN, n = 374).

Different patterns of lymphatic spread of sigmoid, rectosigmoid, and rectal cancers.

Purpose: We tried to evaluate the clinicopathological characteristics of rectosigmoid cancer compared with those of sigmoid and rectal cancer.

Methods: We collected data on patients who underwent curative resections for sigmoid (399; SC group), rectosigmoid (175; RS group), and upper rectal cancer (453; RA group) between June 1996 and December 2007.

Results: The mean distance from the anal verge was 12.