An unusual pediatric case of chronic constipation and rectosigmoid prolapse diagnosed by video defecography.

Rectal prolapse is a relatively common, benign condition in the pediatric population. Conservative management usually results in resolution of the problem. Persistent rectal prolapse with chronic constipation suggests more serious underlying pathologic condition that may be challenging to diagnose. We present a case of severe recurrent rectal prolapse with chronic constipation in a 13-year-old boy. Using video defecography, an unusual radiographic modality in children, a functional sigmoid obstruction was observed that was not found on more routine imaging studies. Laparoscopic sigmoidectomy provided an excellent outcome in this patient who previously had a lifestyle-limiting, chronic condition.