[Volvulus of a mobile spleen. Apropos of a case diagnosed in the preoperative period by ultrasonography].

A case of splenic volvulus, a rare complication of a rare malformation, mobile spleen, is reported, only 150 similar cases being documented in the literature. The diagnosis can be suspected preoperatively by ultrasound imaging. Different etiologies of this lesion are discussed and the various complementary examinations allowing preoperative diagnosis described.