title: A case of hypothalamic hamartoma associated with arachnoid cyst.
abstract: A 14-year-old girl presented with seizures. Radiological examinations revealed an arachnoid cyst in left middle fossa and a cystic mass in the interpeduncular cistern. The cyst was opened and the wall of the cyst and a mass were biopsied. The histological findings were characteristic of an arachnoid cyst and hamartoma, respectively. A hypothalamic hamartoma associated with an arachnoid cyst is comparatively rare; however, such a case may help clarify the genesis of this malformation.
authors.affiliation: Department of Neurosurgery, Oita Medical University, 1-1 Idaigaoka, Hasama-machi, Oita, 879-5593, Japan. goda@oita-med.ac.jp
authors.forename: M
authors.initials: M
authors.lastname: Goda
authors.forename: A
authors.initials: A
authors.lastname: Tashima
authors.forename: M
authors.initials: M
authors.lastname: Isono
authors.forename: S
authors.initials: S
authors.lastname: Hori
authors.forename: Y
authors.initials: Y
authors.lastname: Kimba
mesh_terms: D000293:Adolescent; D016080:Arachnoid Cysts / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D001927:Brain Diseases / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006222:Hamartoma / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D007031:Hypothalamus; D012640:Seizures / Q000209:etiology*