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.
Katsumi
Keiichi
K
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.
Ogose
Akira
A
Hotta
Tetsuo
T
Hatano
Hiroshi
H
Kawashima
Hiroyuki
H
Umezu
Hajime
H
Endo
Naoto
N
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