Vertical rectus abdominis myocutaneous flap, is an excellent flap that fills the large defect in the pelvis after an adominoperineal ischioanal resection; it is free from tension, significantly reduces the incidence of perineal wound complications and hospital stay and can be used to reconstruct the posterior wall of the vagina. We report the first case of Costa Rica abdominoperineal ischioanal resection with reconstruction of posterior vaginal wall with vertical rectus abdominis myocutaneous flap, successfully practiced in a patient of 62 years with locally advanced rectal adenocarcinoma infiltrating posterior wall of the vagina.

Rectal tumor; pelvic exenteration; abdominoperineal resection; vertical rectus abdominis myocutaneous flap