[Surprise in the hernia sac: the intrasaccular tumor of the sigma].

In this report we define the terms of saccular, extra-saccular and intrasaccular tumor and present a rare case of intrasaccular tumor of the colon; it is remarked a careful clinical examination of patients with inguinal hernias to find a colon tumor; diagnosis in emergency is intra-operative. Two therapeutics options are possible: the simultaneous treatment or the delayed resolution.