Lesser sac cerebrospinal fluid collection. An unusual complication of a ventriculoperitoneal shunt.

Ventriculoperitoneal shunts provide an effective means of decreasing intracranial pressure and diverting cerebrospinal fluid (CSF). A variety of complications may be seen, however, with the peritoneal limb. This study describes the scintigraphic evaluation of a large intra-abdominal CSF pseudocyst and the migration of the shunt tip into the lesser peritoneal sac.