title: 18F-fluorodeoxyglucose positron emission tomography/computed tomography in a case of malignant peripheral nerve sheath tumor: An unusual presentation.
abstract: Malignant peripheral nerve sheath tumors (MPNSTs) are rare tumors, with an estimated incidence of 0.1/100,000/year. They are regarded as a rare variety of soft-tissue sarcomas that derive from peripheral nerves or from cells associated with the nerve sheath. Until 50% of observed MPNSTs occur in patients with neurofibromatosis 1 (NF1). The typical presenting signs and symptoms of a PNST are a palpable mass involving a peripheral nerve, loss of nerve function and/or pain. Recently, positron emission tomography (PET) has been used to detect 18F-fluorodeoxyglucose uptake in these tumors. Most of the PET studies have been reported in patients with NF1. We report a case of sporadic MPNST masquerading as infectious dermatoses, with an unusual PET/computed tomography presentation.
authors.affiliation: Department of PET Imaging, Institute of Nuclear Medicine and Allied Sciences, New Delhi, India.
authors.forename: Maria M
authors.initials: MM
authors.lastname: D'souza
authors.forename: Abhinav
authors.initials: A
authors.lastname: Jaimini
authors.forename: Tapan
authors.initials: T
authors.lastname: Kumar Dhali
authors.forename: Paschal
authors.initials: P
authors.lastname: D'souza
authors.forename: Sanjiv
authors.initials: S
authors.lastname: Saw
authors.forename: Rajnish
authors.initials: R
authors.lastname: Sharma
authors.forename: Anupam
authors.initials: A
authors.lastname: Mondal
keywords: Fluorodeoxyglucose; malignant peripheral nerve sheath tumors; positron emission tomography/computed tomography