Transanal Endoscopic Microsurgery (TEM) for Rectal Tumor Excision

摘要

We first performed Transanal Endoscopic Microsurgery (TEM) in 1996, and have since used this technique for the treatment of 27 lesions in 25 patients (15 men and 10 women; mean age, 61.8 years). These lesions consisted of 15 adenomas and 10 adenocarcinomas. Macroscopic types were protruding type and superficial type in 15 and 9 cases, respectively. Many of the tumors would have been difficult to excise endoscopically, and the cases included early cancers with a maximal diameter of 6 cm and tubulovillous adenomas up to 7 cm in diameter.In conclusion, TEM is considered applicable to excision of adenomas and early cancers of the rectum for which endoscopic excision is impossible, as the technique is relatively non-invasive and excision can be accomplished with the tumor stump fixed.