Local recurrence after transanal endoscopic microsurgery for rectal polyps and early cancers.

Background: Transanal endoscopic microsurgery (TEM) allows for local excision of rectal neoplasms with greater exposure than transanal excision and less morbidity than transabdominal approaches. This study examines the implications of the procedure with respect to predictors of recurrence.

Methods: We performed a retrospective analysis of 144 consecutive TEMs from 1993 to 2004.

Mapping the rectum: spatial analysis of transanal endoscopic microsurgical outcomes using GIS technology.

Transanal endoscopic microsurgery (TEM) is a technically challenging procedure hindered by rectal anatomic constraints. To study the relationship of lesion position with performance of TEM, a novel approach of spatial analysis using Geographic Information Systems (GIS) was developed. A retrospective review was conducted on 144 consecutive TEMs, analyzing clinical, pathologic, and positional characteristics.