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CSFoma
Peritoneal Cerebrospinal Fluid Pseudocyst
General Considerations
- Loculation of cerebrospinal fluid (CSF) at the distal end of the a ventriculoperitoneal shunt tube
- May occur secondary to adhesions
- Leads to an enlarging abdominal and/or pelvic mass at catheter tip
- CSF from tip is no longer absorbed by peritoneum
Clinical Findings
- Local signs of an abdominal mass
- Increased intracranial pressure signs
Imaging Findings
- Diagnosis is most often made by ultrasound
Treatment
- Can resolve spontaneously
- Shunt revision and repositioning
- Aspiration of cyst’s contents
Complications
- Infection of pseudocyst can reach >76% in children under 4 years
- Overall infection rate is 30%
CSFoma. CT scan of lower abdomen at left shows a large fluid-filled cystic mass (black arrow) at the termination of the coiled ventriculoperitoneal shunt tube (red arrows) seen traversing the chest in the chest radiograph at right (white arrows).
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Radiology of the Postoperative GI Tract
By Bruce R. Javors, Ellen L. Wolf
Edition: illustrated
Published by Springer, 2003
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