Isolated tongue tremor after removal of cerebellar pilocytic astrocytoma: Functional analysis with SPECT study.
Tongue tremor is a rare form of focal tremor. Even though the dysfunction of the dentato-rubro-olivary circular pathway has been proposed as its mechanism, the origin of the rhythmic activities remains unknown. We experienced a case of isolated tongue tremor after the removal of a cerebellar pilocytic astrocytoma. To localize the activated structures corresponding to the isolated tongue tremor, we analyzed subtracted ictal SPECT coregistered to MRI (SISCOM). SISCOM demonstrated multiregional hyperperfusion including the Guillain-Mollaret triangular and extratriangular structures. The activation of the inferior olive and red nucleus and accompanying extratriangular structures might be related to the isolated tongue tremor.
Kim
Suk Jae
SJ
Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Korea.
Lee
Won Yong
WY
Kim
Byoung Joon
BJ
Kim
Ji-Youn
JY
Hong
Seung Bong
SB
Tae
Woo Suk
WS
Seo
Dae-Won
DW
D000328:Adult; D001254:Astrocytoma / Q000601:surgery; D002528:Cerebellar Neoplasms / Q000601:surgery; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D009847:Olivary Nucleus / Q000000981:diagnostic imaging / Q000473:pathology; D011183:Postoperative Complications; D012012:Red Nucleus / Q000000981:diagnostic imaging / Q000473:pathology; D015899:Tomography, Emission-Computed, Single-Photon; D014060:Tongue Diseases / Q000000981:diagnostic imaging* / Q000209:etiology*; D014202:Tremor / Q000000981:diagnostic imaging* / Q000209:etiology*