MRI Features of Benign Cerebellar Astrocytomas in Children
- VernacularTitle:儿童小脑良性星形细胞瘤的MRI特征
- Author:
Haoran CHENG
;
Guangquan WEI
;
Jiubo YANG
;
Huaiyu WU
;
Haitao ZHAO
;
Yi HUAN
- Publication Type:Journal Article
- Keywords:
cerebellar astrocytomas;
brain neoplasms;
magnetic resonance imaging;
pediatrics
- From:
Journal of Practical Radiology
2000;0(12):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the MR imaging characteristics of benign cerebellar astrocytomas(BCAs) in children. Methods The clinical and MR imaging data of twelve patients with BCAs were reviewed and analyzed retrospectively.Results Of 12 tumors, 7 cases were located in the cerebellar hemisphere, 4 in the vermis, and 1 in the IV ventricle. All children were in company with hydrocephalus rated as extensive (n=9) or moderate (n=3). The tumors ranged in diameter from 23 mm to 68 mm, mean diameter 42 mm. Solid tumors were found in 5 children, and cystic areas occurred in 7 of 12 patients.BCAs were hypointense on T 1-weighted in 10 cases, and hyperintense on T 2WI in 9 cases compared with that of normal brain parenchyma. After contrast injection, BCAs marked (n=2), moderate (n=5), or absent (n=5) enhancement. Hemorrhage and calcification were not common (n=1,0, respectively).Conclusion BCAs has relative characteristic features on MRI in children, and MRI plays an important role in diagnosing and evaluating these tumors preoperatively.
