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01.12.2018 | Case report | Ausgabe 1/2018 Open Access

Journal of Medical Case Reports 1/2018

Intestinal endometriosis combined with colorectal cancer: a case series

Journal of Medical Case Reports > Ausgabe 1/2018
Masatsugu Ishii, Masashi Yamamoto, Keitaro Tanaka, Mitsuhiro Asakuma, Shinsuke Masubuchi, Hiroki Hamamoto, Hiroshi Akutagawa, Yutaro Egashira, Yoshinobu Hirose, Junji Okuda, Kazuhisa Uchiyama



Intestinal endometriosis is a common benign disease among menstruating women that affects the intestinal tract.

Case presentation

This case report presents seven Japanese cases of intestinal endometriosis with colorectal cancer treated by laparoscopic surgery. Five of the seven cases reported here are women presenting with bowel obstruction due to colorectal endometriosis with colorectal cancer. It can be confused with serious lesions such as advanced colorectal cancer with peritoneal involvement or invasion of adjacent organs (T4).


Therefore, we should consider the probability that the cause of bowel obstruction is not T4 but intestinal endometriosis. For surgical treatment, we recommend laparoscopic surgery for colorectal resection because of its benefits of differential diagnosis of T4, preserving fertility, and preventing excessive surgical stress. We performed laparoscopic resection in seven patients with intestinal endometriosis and colorectal cancer. These cases demonstrate the difficulty of establishing a differential diagnosis of intestinal endometriosis with colorectal cancer from T4.

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