Large abdominal cerebro-spinal fluid pseudocyst mimicking mesenteric cyst in an adult: A rare presentation

Abdominal cerebrospinal fluid pseudocyst occurring after ventriculoperitoneal shunt procedure for hydrocephalous is a rare complication. It is sometimes seen in children and is very rare in adults. We are here in reporting a case of 23 years unmarried female who underwent ventricul operitoneal shunt procedure for hydrocephalus at the age of 6 months and remained asymptomatic thereafter. After 22 years of this procedure, she presented with abdominal pain, distention, vomiting and a progressively increasing large cystic lump in upper and mid-abdomen that was initially diagnosed as mesenteric cyst. However, on CECT abdomen, it came out to be a large abdominal cerebro spinal fluid (CSF) pseudo cyst. It was an unusual delayed complication of ventriculoperitoneal shunt procedure that was successfully managed with surgical intervention. This case emphasizes that this unusual presentation should be known to the surgeons who mostly deal with abdominal masses.