Is magnetic resonance imaging useful for the management of patients with rectal villous adenoma? A study of 45 consecutive patients treated by transanal endoscopic microsurgery.

Preoperative evaluation of rectal villous adenoma is overstaged by MRI in more than half of the patients. This study suggests that the indication of local excision by TEM for rectal villous adenoma should be based on TRUS rather than on MRI.