[A case of intrathoracic schwannoma derived from the left vagus nerve].
We report a case of schwannoma asymptomatic for 9 years, derived from the left vagus nerve in the middle mediastinum. This spindle-shaped tumor caused paralysis of the left recurrent nerve as an initial clinical manifestation with cough. T2-weighted magnetic resonance imaging (MRI) showed a neurogenic tumor with a characteristic target appearance and with constituents of different intensities: mucinous material in the peripheral zone and solitary tissue in the central zone. But, this different intensity is not directly reflected by the histopathologic features of Antoni types A and B. These findings suggest that MRI is useful for determining the parent nerve of a neurogenic tumor and is helpful for the diagnosis.
Tsukadaira
A
A
First Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto, Japan.
Okubo
Y
Y
Takashi
S
S
Haniuda
M
M
Hotta
J
J
Horie
S
S
Kamijo
Y
Y
Kubo
K
K
D000328:Adult; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008479:Mediastinal Neoplasms / Q000175:diagnosis*; D009442:Neurilemmoma / Q000175:diagnosis*; D014630:Vagus Nerve / Q000473:pathology