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Hemorrhagic Transformation in Acute Cerebellar Infarction.
MedLine Citation:
PMID:  21921595     Owner:  NLM     Status:  Publisher    
Background: Hemorrhagic transformation (HT) is a well-known consequence of acute ischemic stroke, but little is known about HT in cerebellar infarction. Methods: Patients with acute cerebellar infarction within 48 h of onset were retrospectively recruited. MRI, including diffusion-weighted imaging (DWI) and T(2)*-gradient echo imaging (T(2)*), was performed twice (upon admission and 2 weeks after stroke onset). Infarct diameter and volume were measured by manual tracing on initial DWI. HT was evaluated with follow-up T(2)*, and all patients were divided into two groups according to the presence of HT (HT group and non-HT group). The frequency of HT and the factors associated with HT were investigated. Results: Ninety-six patients (64 males, median age 74 years, IQR 65-81 years, and National Institute of Health Stroke Scale score 5, IQR 1-14) were enrolled. Forty-two patients (43%) showed HT on follow-up T(2)* (HT group). Infarct diameter and volume were larger in the HT group than in the non-HT group (3.2 vs. 1.6 cm, respectively, p < 0.001, for infarct diameter and 8.0 vs. 1.7 cm(3), respectively, p < 0.001 for infarct volume). Multivariate logistic regression analysis revealed that both infarct diameter >2.7 cm (OR 7.58, 95% CI 2.82-20.4, p < 0.001) and volume >4.5 cm(3) (OR 11.5, 95% CI 3.80-34.8, p < 0.001) were independent factors associated with HT. Conclusions: Half of the patients with acute cerebellar infarcts had HT on follow-up T(2)*. Initial infarct diameter and volume on DWI were independent factors associated with HT.
Yuki Sakamoto; Kazumi Kimura; Yasuyuki Iguchi; Kensaku Shibazaki; Junya Aoki
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-9-15
Journal Detail:
Title:  Cerebrovascular diseases (Basel, Switzerland)     Volume:  32     ISSN:  1421-9786     ISO Abbreviation:  -     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-9-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9100851     Medline TA:  Cerebrovasc Dis     Country:  -    
Other Details:
Languages:  ENG     Pagination:  327-333     Citation Subset:  -    
Copyright Information:
Copyright © 2011 S. Karger AG, Basel.
Department of Stroke Medicine, Kawasaki Medical School, Kurashiki, Japan.
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