Transvaginal removal of rectal stromal tumor with Martius flap interposition: a feasible option for a large tumor at the anterior wall of the rectum.

Neoadjuvant imatinib treatment, followed by complete transvaginal removal, presents a feasible option for large rectal gastrointestinal tumors located on the anterior wall of the rectum and protruding into the vagina. The use of Martius flap interposition is convenient and can be employed to prevent rectovaginal fistula.