Isolated Posteroinferior Cerebellar Artery Dissection Diagnosed by High-Resolution Vessel Wall MRI.

Author: Hea Ree PARK ¹ ; Jaechun HWANG ; Ye Sel KIM ; Juhyeon KIM ; Hyunjin JO ; Young Hee JUNG ; Jihoon CHA ; Sung Tae KIM ; Gyeong Moon KIM
Author Information

1. Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. kimgm@skku.edu
Publication Type:Case Report
Keywords: Isolated PICA dissection; High-resolution vessel-wall MRI; Arterial dissection
MeSH: Arteries*; Dilatation; Headache; Hematoma; Horner Syndrome; Magnetic Resonance Imaging*; Pica; Stroke; Vertigo
From:Journal of the Korean Neurological Association 2016;34(3):209-212
CountryRepublic of Korea
Language:Korean
Abstract: Arterial dissection is an important cause of stroke. We report two cases of isolated posterior inferior cerebellar artery (PICA) dissection diagnosed by high-resolution vessel-wall MRI (HRVW-MRI). One subject complained of abrupt-onset vertigo and headache, and the other subject had headache, vertigo, and Horner syndrome. Conventional MRA showed only focal dilatation of the PICA, but HRVW-MRI revealed intramural hematoma and double-lumen contour in the PICA, suggesting arterial dissection. We suggest that the use of HRVW-MRI should be considered when diagnosing isolated PICA dissection in a PICA infarct with an unknown cause.