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Published on: February 29, 2020
[Expectoration of cerebrospinal fluid: an unusual complication of ventriculoperitoneal shunt]
Insights
A child experienced pneumonia and cerebrospinal fluid (CSF) expectoration after ventriculoperitoneal shunting. The shunt catheter migrated, perforating the diaphragm and lung, causing respiratory issues that resolved upon removal.
Area of Science:
- Neurosurgery
- Pediatric Surgery
- Pulmonology
Background:
- Ventriculoperitoneal shunting is a common procedure for hydrocephalus in children.
- Complications can arise from shunt malfunction or migration.
- Respiratory complications are rare but serious.
Observation:
- A child presented with recurrent pneumonia and expectoration of cerebrospinal fluid (CSF).
- Chest X-ray revealed the shunt catheter within the left lung parenchyma.
- The distal catheter end had perforated the diaphragm and pleura.
Findings:
- The misplaced shunt catheter led to CSF leakage into the thoracic cavity and lungs.
- This resulted in recurrent pneumonia and CSF expectoration.
- Catheter migration to the infradiaphragmatic space was theorized as the cause.
Implications:
- This case highlights a rare but critical complication of ventriculoperitoneal shunting.
- Prompt diagnosis and removal of the migrated catheter are essential for recovery.
- Understanding shunt migration pathways is crucial for preventing such events.
Abstract:
A child, who had undergone ventriculoperitoneal shunting, presented with repeated episodes of pneumonia and expectoration of CSF. Chest x-ray demonstrated the presence of the shunt catheter in the base of the left lung. In the present case the distal end of the catheter perforated the diaphragm, entering the thoracic cavity through the pleura and penetrating the pulmonary parenchyma. CSF then flowed freely into the alveoli and bronchi and became expectorated during repeated bouts of coughing associated with pneumonia. This respiratory complication disappeared after the removal of the catheter. We theorize that the penetration of the catheter into the thoracic cavity was secondary to its displacement from the iliac fossa to the left infradiaphragmatic space between the spleen and the diaphragm where the intra-abdominal pressure is lowest. The respiratory movements and the hypertension inside the abdomen created a constant friction of the catheter against the diaphragm which was finally perforated, permitting the passage of the peritoneal end of the shunting device into the thoracic cavity and secondary penetration of the lung.
Related Concept Videos
Cerebrospinal Fluid
CSF Production
CSF is produced mainly in the choroid plexus, a network of capillaries and ependymal cells located within the ventricular system of the brain.
Brain Abscess l: Introduction
Increased Intracranial Pressure l: Introduction
Increased Intracranial Pressure ll: Pathophysiology
Cerebral Edema l: Introduction
Cerebral Edema ll: Pathophysiology

