title: Pilomyxoid astrocytoma with involvement of the sella turcica in an adolescent.
abstract: Pilomyxoid astrocytoma (PMA) is a recently described tumor typically occurring in the hypothalamic-chiasmatic region of very young children. PMA is characterized by a more aggressive course than pilocytic astrocytoma and exhibits certain differing histological features. We report a PMA in an adolescent patient with visual field disturbance. Imaging studies revealed enlargement of the sella turcica due to a homogenously enhancing sellar and suprasellar mass identifiable both on CT scans and MRI. We believe that PMA may be included in the list of differential diagnoses of the lesions expanding the sella turcica.
authors.affiliation: Sina Hospital, Tehran University of Medical Sciences (TUMS), Imam Avenue, Tehran, Iran.
authors.forename: Maysam
authors.initials: M
authors.lastname: Alimohamadi
authors.forename: Mohammad Shirani
authors.initials: MS
authors.lastname: Bidabadi
authors.forename: Zahra
authors.initials: Z
authors.lastname: Ayan
authors.forename: Ebrahim
authors.initials: E
authors.lastname: Ketabchi
authors.forename: Abbas
authors.initials: A
authors.lastname: Amirjamshidi
mesh_terms: D001254:Astrocytoma / Q000150:complications* / Q000473:pathology; D001932:Brain Neoplasms / Q000150:complications* / Q000473:pathology; D002648:Child; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D012658:Sella Turcica / Q000473:pathology*; D014786:Vision Disorders / Q000209:etiology