Despite high complication rates, it is possible to perform sphincter-preserving surgery with excision of the invasive proximal segment with trans-sphincteric surgery in locally advanced rectal cancer. Trans-sphincteric rectal resection techniques should be considered as alternative sphincter-saving surgical procedures in lower rectal cancer cases with external sphincteric invasion by considering that the invasive proximal segment can be resected.
Yücesoy et al. (Mon,) studied this question.