Abstract：Objective: To investigate MRI appearance of cerebral cortical based diffuse astrocytoma(DA). Methods: Routine preoperative MR images of 21 cases of cerebral cortical based diffuse astrocytoma(pathologically proved NOS type) and relevant literatures were retrospectively analyzed. Results: Of the total 21 cases(23 lesions), most were located in the frontal lobe(16 cases). Most were cystic masses(about 65%) with T1 hypointensity and T2 hyperintensity. A minority were cystic and solid masses or swelling gyrus with subcortical patchy abnormal signals. Peritumoral edema was rare or mild with no contrast enhancement. One gemistocytic astrocytoma(about 6 cm in long diameter) showed a cystic and solid mass with moderate peritumoral edema and moderate patchy enhancement in the solid part. Two lesions were located in the frontal lobe with compression of thin cranial bone. Conclusion: High proportion of cystic mass is the main MRI feature of NOS type cerebral cortical based diffuse astrocytoma, which is helpful in diagnosis, differential diagnosis and prognosis evaluation.
王朝晖，高培毅. 大脑皮层弥漫性星形细胞瘤MRI分析[J]. 中国临床医学影像杂志, 2018, 29(1): 1-3.
WANG Zhao-hui, GAO Pei-yi. MRI analysis of cerebral cortical based diffuse astrocytoma. JOURNAL OF CHINA MEDICAL IMAGING, 2018, 29(1): 1-3.
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2018, Vol. 29 
