Physiopathologic knowledge of hydrocephalus allows progress in the conception of modern shunts. With better controlled surgical techniques, shunting has revolutionized the prognosis of hydrocephalus. However, peritoneal or atrial shunting is not harmless, as illustrated by the large number of reported complications. We describe here an unusual complication of ventriculoperitoneal shunt dysfunction revealed by focal cerebral edema in a 60-year-old patient. Preoperative cerebral CT scan showed the focal brain edema with diffusion of cerebrospinal fluid around the trajectory of the ventricular catheter. Abdominal CT scan demonstrated distal shunt dysfunction. Clinical and radiological outcome was good after surgical revision of the shunt, confirming the diagnosis.