[Andean megacolon and sigmoid volvulus in the high altitude. Presentation of 418 cases between 2008 - 2012 at C. Monge Hospital, Puno, Peru].

Objective: The present study describes the medical and surgical management of sigmoid volvulus due to Andean dolicomegacolon in a hospital at an altitude above 3000 m.

Material And Methods: A descriptive, observational, crosssectional study of 418 patients diagnosed with sigmoid volvulus; Admitted initially due to intestinal obstruction, in the Hospital of Juliaca Carlos Monge. Puno-Perú, during the period 2008-2012.