title: Septum pellucidum hamartomas in neurofibromatosis type 1.
abstract: Septum pellucidum hamartomas have not been reported previously in neurofibromatosis type I (NF1). In a retrospective study of 86 cases with NF1 we found three patients with septum pellucidum hamartomas (frequency = 3.4 %). These could be detected on especially fluid attenuated inversion recovery and proton density-weighted images on MRI. With respect to proton spectroscopy in a patient. a low Cho level with a normal NAA peak was found, excluding a neoplasm. MR spectroscopy findings resulted in a very high NAA/Cho ratio (= 2.91). and a low Cho/Cr ratio (= 0.53) compared to a control group of 8 normal age-matched individuals. In this control group. mean NAA/Cho ratio was I .86. and mean Cho/ Cr ratio was 0.78.
authors.affiliation: Department of Radiology, Ege University Hospital, Bornova, Izmir, Turkey.
authors.forename: R N
authors.initials: RN
authors.lastname: Sener
mesh_terms: D000293:Adolescent; D001927:Brain Diseases / Q000150:complications / Q000175:diagnosis; D002648:Child; D002675:Child, Preschool; D005260:Female; D006222:Hamartoma / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D008297:Male; D009456:Neurofibromatosis 1 / Q000150:complications*; D012189:Retrospective Studies; D012688:Septum Pellucidum