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J Mov Disord. 2013 Oct;6(2):37-9. doi: 10.14802/jmd.13009. Epub 2013 Oct 30.

Hot cross bun sign following bilateral pontine infarction: a case report.

Author information

1
Departments of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea.
2
Neuroradiology, Bundang Jesaeng General Hospital, Seongnam, Korea.

Abstract

The hot cross bun sign is characterized by cruciform T2 signal hyperintensity in the pons and has been reported to be a specific but not pathognomic for multiple system atrophy. It reflects degeneration of pontine neurons and transverse pontocerebellar fibers, regardless of the underlying pathogenic process. Here, we report a case of hot cross bun sign following bilateral pontine infarction due to Wallerian degeneration of the pontocerebellar fibers.

KEYWORDS:

Hot cross bun sign; Pontine infarction; Wallerian degeneration

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