Hemiatrophy of the tongue due to hypoglossal schwannoma shown by MRI.
Schwannomas account for 8.5% of all intracranial tumours; more than 90% arise from the 8th cranial nerve. Only 42 cases of schwannoma of the hypoglossal nerve have been reported. A 59 year-old woman developed right hemiatrophy of the tongue, clearly demonstrated on MRI, as was a small hypoglossal schwannoma. High signal was seen in the atrophic side of the tongue on both T1- and T2-weighted images, as described in the literature.
Okura
A
A
Department of Neurosurgery, Kurume University, Japan.
Shigemori
M
M
Abe
T
T
Yamashita
M
M
Kojima
K
K
Noguchi
S
S
D003390:Cranial Nerve Neoplasms / Q000175:diagnosis* / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007002:Hypoglossal Nerve / Q000473:pathology* / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D009133:Muscular Atrophy / Q000175:diagnosis* / Q000601:surgery; D009442:Neurilemmoma / Q000175:diagnosis* / Q000601:surgery; D011183:Postoperative Complications / Q000175:diagnosis; D014059:Tongue / Q000294:innervation*; D014060:Tongue Diseases / Q000175:diagnosis* / Q000601:surgery