Peritoneal CSF pseudocyst (CSFoma)

Discussion:

A peritoneal CSF pseudocyst is a rare complication of ventriculoperitoneal shunt catheter placement. The time from the last shunting procedure to the development of an abdominal pseudocyst ranges from 3 weeks to 5 years. 

CT

May show a small or massive , loculated cyst like structure in the peritoneal cavity at the distal tip of VP shunt 

Measurement of attenuation values with CT characterizes the contents as water attenuation and demonstrates the relationships of portions of the shunt catheter with the pseudocyst.

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