Situs inversus totalis is a rare anomaly in which the abdominal and thoracic cavity structures are opposite their usual positions. A 41-yr-old woman, who had an ulcerating cancer on the rectum, was found as a case of situs inversus totalis. We present an overview of the operative technique for the first documented laparoscopic total mesorectal excision of a rectal cancer in the patient with situs inversus totalis. Careful consideration of the mirror-image anatomy permitted a safe operation using techniques not otherwise different from those used for the general population. Therefore, curative laparoscopic surgery for rectal cancer in this patient is feasible and safe.
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