Extended lateral pelvic sidewall excision (ELSiE): an approach to optimize complete resection rates in locally advanced or recurrent anorectal cancer involving the pelvic sidewall

Background Complete pathological resection of locally advanced or recurrent rectal and anal cancer is regarded as one of the most important determinants of oncological outcome. Disease in the lateral pelvic sidewall has been considered a contraindication for pelvic exenteration surgery owing to the significant likelihood of incomplete resection.