title: Spontaneous involution of a non-optic astrocytoma in neurofibromatosis type I: serial magnetic resonance imaging evaluation.
abstract: A patient with neurofibromatosis type I (NF1) was followed-up with serial magnetic resonance imaging (MRI) studies over a period of 6 years. A contrast-enhancing lesion of the internal capsule, histologically proven to be pilocytic astrocytoma through stereotactic brain biopsy with mass effect and associated edema, was detected to reveal spontaneous involution on follow-up MRI studies. Although spontaneous regression of gliomas of the optic pathway-hypothalamus in patients with NF1 is relatively common in the literature, spontaneous involution of non-optic (i.e. areas other than optic pathways and hypothalamus) gliomas is rarely reported. Conservative management with follow-up MRI studies should be considered for non-optic glial tumors and tumor-like masses in patients with NF1, and surgical treatment should not be considered unless the lesions exhibit a rapid or unrelenting growth on serial MRI studies or produce significant clinical deterioration.
authors.affiliation: Istanbul Sisli Etfal Hospital, Department of Radiology, Istanbul, Turkey. scakirer@yahoo.com
authors.forename: S
authors.initials: S
authors.lastname: Cakirer
authors.forename: E
authors.initials: E
authors.lastname: Karaarslan
mesh_terms: D001254:Astrocytoma / Q000473:pathology*; D001921:Brain / Q000473:pathology; D001932:Brain Neoplasms / Q000473:pathology*; D002648:Child; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009365:Neoplasm Regression, Spontaneous / Q000473:pathology*; D009456:Neurofibromatosis 1 / Q000473:pathology*