Inoue H, Yamamura R, Yamada K, Hamasaki T, Inoue N, Mukasa A. Hemichorea induced by a sphenoid ridge meningioma.
Surg Neurol Int 2021;
12:201. [PMID:
34084628 PMCID:
PMC8168652 DOI:
10.25259/sni_171_2021]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 04/15/2021] [Indexed: 11/24/2022] Open
Abstract
Background:
Movement disorders are rare in brain tumors. We describe a 45-year-old woman with hemichorea, a concomitant contralateral sphenoid ridge meningioma.
Case Description:
The meningioma enlarged as her hemichorea worsened, and after meningioma resection, the hemichorea gradually subsided. N-isopropyl-p-[123I]-iodoamphetamine single-photon emission computed tomography performed preoperatively showed decreased regional cerebral blood flow (CBF) to the basal ganglia circuit ipsilateral to the tumor and, when repeated postoperatively, confirmed improved regional CBF.
Conclusion:
We propose that the enlarging sphenoid ridge meningioma had a remote effect on regional CBF and the thalamocortical motor center and that complex changes in the basal ganglia output may have caused the hemichorea.
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