Primary Grynfeltt's Hernia.

Lumbar hernia is a rare defect of the abdominal wall. It accounts for 2 % of all wall hernias. It is divided in two levels: superior lumbar hernia, also known as Grynfeltt's hernia (GH), and an inferior lumbar hernia or Petit's hernia. GH is more commonly encountered in practice, and it is mainly posttraumatic in origin. Spontaneous primary GH is quite rare. Only 250 to 300 of such cases have been reported the in literature so far. The treatment of choice is retroperitoneal surgical approach and a meshplasty after complete reduction of its contents. Prognosis is usually excellent.