MRI Diagnosis of Cerebella Astrocytoma

<b<Objective</b< To investigate the MRI finding of cerebella astrocytoma and to improve the diagnosis ability for this disease. <b<Methods</b< The MRI findings of 31 patients verified by surgery and pathology were analyzed retrospectively. <b<Results</b< Among 31 cases of cerebella astrocytoma,there were solid type in 7 case,tumor in cyst type 10 cases,cyst in tumor type 13 cases.In addition,1 case represected absolute cyst type.All cases were in company with obstructive hydrocephalas. <b<Conclusion</b< MRI findings of cerebella astrocytoma are characteristic and contrast-enhanced scan was helpful in detection of the lesion and characterization of the disease.The disease can be preoperatively diagnosed,but it should be differentiated from hemangioblastomas,medulloblastoma,ependymal tumor,metastasis.