Lumbar hernia.

Even if it is more than 250 years since the first description of a lumbar hernia occurred in the literature the diagnosis is still rare. This disease is discussed in the light of a case history with a primary lumbar hernia from the Grunfelt-Lesshaft triangle. The diagnosis is usually not difficult to establish although certain differential diagnosis has to be considered. The treatment is surgical either as in the present case with a simple closure or when larger defects in the transversalis fascia are present with more extensive surgery.