[Grynfelt's hernia. A case report and review of the literature].

Lumbar hernias are rare lesions. They involve the extrusion of visceral contents through a defect in the posterolateral abdominal wall. Only 250 a 300 cases had been reported in the literature. They occur most often in the superior lumbar triangle (Grynfelt's hernia). All lumbar hernias must be treated with surgery and the preferable surgical approach is done retroperitoneally. Primary repair, autologous tissue or prosthetic material may be used to obliterate the defect. The authors report a case of Grynfelt's hernia in which polypropylene mesch was placed pre-peritonially.