Plexiform schwannoma of the forearm.
We report a case of plexiform schwannoma located in the flexor muscles of the forearm in the absence of other signs of neurofibromatosis or schwannomatosis. Magnetic resonance examination revealed a multinodular irregular inhomogeneous mass. Some nodules displayed a peripheral, high intensity rim and a central low intensity (target sign) on T2-weighted images. Pre-operative diagnosis of the rare plexiform schwannoma may be possible with careful imaging examination for the target sign.
Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Graduate School of Medical and Dental Sciences, Niigata University, Asahimachi 1-751, 951-8510 Niigata, Japan.
Keiichi
K
Katsumi
Akira
A
Ogose
Tetsuo
T
Hotta
Hiroshi
H
Hatano
Hiroyuki
H
Kawashima
Hajime
H
Umezu
Naoto
N
Endo
D000328:Adult; D003937:Diagnosis, Differential; D005542:Forearm / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008475:Median Nerve / Q000000981:diagnostic imaging / Q000473:pathology; D020423:Median Neuropathy / Q000175:diagnosis*; D009442:Neurilemmoma / Q000175:diagnosis*; D018318:Neurofibroma, Plexiform / Q000175:diagnosis; D010524:Peripheral Nervous System Neoplasms / Q000175:diagnosis*; D011859:Radiography; D012983:Soft Tissue Neoplasms / Q000175:diagnosis