Schwannoma in neurofibromatosis type 1: a pitfall for detecting malignancy by metabolic imaging.

TitleSchwannoma in neurofibromatosis type 1: a pitfall for detecting malignancy by metabolic imaging.
Publication TypeJournal Article
Year of Publication2013
AuthorsAhlawat S, Blakeley J, Montgomery E, Subramaniam RM, Belzberg A, Fayad LM
JournalSkeletal radiology
Volume42
Issue9
Pagination1317-22
Date Published2013 Sep
Abstract

Neurofibromatosis type 1 (NF1) is a neurocutaneous syndrome characterized by the development of multiple peripheral nerve sheath tumors, the majority of which are benign neurofibromas. However, malignant peripheral nerve sheath tumors (MPNSTs) occur with a 10 % lifetime risk in patients with NF1, often developing within a neurofibroma. When clinical suspicion for an MPNST arises, imaging with FDG PET and MRI is performed to characterize a peripheral tumor for potential malignancy. In this report, we describe a patient with NF-1 who had two peripheral tumors with similar features by PET, both suspicious for MPNST, but differing features by MRI, one of which was subsequently determined to be an MPNST and the second to be a schwannoma.

DOI10.1007/s11356-013-1768-9
Alternate JournalSkeletal Radiol.