title: September 2002: 24-year-old female with a 6-month history of seizures.
abstract: The September 2002 COM. A 24-year-old female presented with a history of 3 generalized seizures, the first of which had occurred 6 months before admission. Her neurological examination was normal, but upon admission her MRI showed a small cystic lesion in the left parieto-occipital region. The lesion was hyper-intense on T-2 weighted images and did not show contrast enhancment. At surgery, the tumor was found to be deep to the cortex and was a cyst with amber fluid surrounded by gliotic brain. Microscopically, the tumor was well-demarcated from the surrounding tissues, which showed reactive changes, including Rosenthal fibers. The tumor was composed of GFAP-positive glial cells, which were arranged in a pseudopapillary fashion around blood vessels. In between, the tumor cells were positive for neuronal markers. The diagnosis was papillary glioneuronal tumor (PGNT), a relatively recently described lesion that may be a variant of ganglioglioma. The current literature on PGNTs is reviewed.
authors.affiliation: Department of Neuropathology, University Hospital Hamburg-Eppendorf, Germany.
authors.forename: Katrin
authors.initials: K
authors.lastname: Lamszus
authors.forename: Maria
authors.initials: M
authors.lastname: Makrigeorgi-Butera
authors.forename: Rudolf
authors.initials: R
authors.lastname: Laas
authors.forename: Manfred
authors.initials: M
authors.lastname: Westphal
authors.forename: Dimitrios
authors.initials: D
authors.lastname: Stavrou
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000150:complications / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology*; D002291:Carcinoma, Papillary / Q000150:complications / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology*; D003560:Cysts / Q000473:pathology; D005260:Female; D018303:Ganglioglioma / Q000150:complications / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology*; D006801:Humans; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging; D011859:Radiography; D012640:Seizures / Q000209:etiology