After surgery for pelvic tumor, most of patients complain voiding dysfunction, defecation dysfunction and sexual dysfunction which lead to decrease quality of life. Recently, nerve-sparing surgery has been introduced. But it is difficult to establish standard surgical procedure for nerve-sparing. And it is the concern that performing nerve sparing surgery may reduce radicality of surgery which influence prognosis.
Through pelvic autonomic nerve monitoring system (PAMS I), this trial is expected to raise the possibility of nerve-sparing with maintaining radicality of surgery.
Pressure sensor of PAMS I and needle prove of IOM are very thin and these instruments have been used clinically. Taking this into consideration, additional risk by nerve monitoring is considered to be minimal.
