Spontaneous intraperitoneal rupture of a neurogenic bladder; the importance of ascitic fluid urea and electrolytes in diagnosis.

Spontaneous intraperitoneal bladder rupture in a 38 year old man with a spastic paraparesis since infancy is described. Delayed diagnosis resulted in peritoneal autodialysis so providing an opportunity for documentation of biochemical abnormalities. Surgery resulted in a successful outcome. The literature on this rare condition is outlined and difficulties in diagnosis are discussed. The diagnostic value of urea and electrolyte levels in ascitic fluid is emphasized.