title: Recurrent chemical meningitis in craniopharyngioma without reduction in size of cyst: case report of two cases and review of the literature.
abstract: Chemical meningitis is a rare phenomenon due to rupture of a craniopharyngioma     cyst; it develops because of presence of cholesterol crystals in cyst fluid     secreted by the squamous epithelium lining of the cyst. Spontaneous rupture of     the cyst may present with or without meningitis, depending upon the cholesterol     contents of cystic fluid of tumor. A decrease in the size of cyst may or may not     be noted. Here we report two cases of craniopharyngioma, one which had a     recurrent episode of chemical meningitis after surgery due to leak from residual     component of the craniopharyngioma without evidence of recurrence of lesion, or     decrease in the size of the cyst. Another case presented with initial symptoms     and signs of meningitis, with no change in the size of the lesion after the     second episode of chemical meningitis.
authors.affiliation: Sanjay Gandhi Postgraduate Institute of Medical Sciences, Department of Neurosurgery, Lucknow, India. drdin03@gmail.com
authors.forename: Dinesh
authors.initials: D
authors.lastname: Rajput
authors.forename: Arun
authors.initials: A
authors.lastname: Srivastva
authors.forename: Raj
authors.initials: R
authors.lastname: Kumar
authors.forename: Ashok
authors.initials: A
authors.lastname: Mahapatra
mesh_terms: D000293:Adolescent; D002784:Cholesterol / Q000378:metabolism; D003397:Craniopharyngioma / Q000150:complications* / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008582:Meningitis, Aseptic / Q000209:etiology* / Q000378:metabolism / Q000473:pathology; D009364:Neoplasm Recurrence, Local / Q000473:pathology; D010911:Pituitary Neoplasms / Q000150:complications* / Q000473:pathology / Q000601:surgery*; D012422:Rupture, Spontaneous / Q000378:metabolism / Q000473:pathology
chemical_list: D002784:Cholesterol