[Hydrothorax as a complication of a ventricle peritoneal shunt. A case report].

The ventricle peritoneal (VP) shunt is commonly used in the treatment of hydrocephalus. It is a relatively simple and effective technique, but around 70% of the patients with a VP shunt have a complication in their lifetime. Most of these complications are due to infection or mechanical dysfunction. The thoracic complications are rare. The present case is one of the small number of them found in the literature, describing hydrothorax as a complication of a VP shunt without catheter migration and without ascites. The case is presented of a 2 year-old girl with VP shunt. The patient was diagnosed with pleural effusion compatible with hydrothorax. After finding beta-2-transferrin in the pleural fluid, it was it was shown to be from cerebrospinal fluid. Cranial CT showed the catheter in a proper position, and the Xray and ultrasound showed the catheter correctly positioned in the peritoneum.