不典型毛细胞型星形细胞瘤的MRI特点分析  

MRI Findings and Pathologic Analysis of Atypical Pilocytic Astrocytoma

作　　者：黄志平[1] 路世龙[1] 黄聪 王宇军 林波淼[1] 李静[1] HUANG Zhi-ping;LU Shi-Long;HUANG Cong;WANG Yu-jun;LIN Bo-miao;Li Jing(Department of Diagnostic Imaging,Zhujiang Hospital of Southern Medical University,Guangzhou 510282,Guangdong Province,China;Department of Radiology,The 926 Hospital of PLA,Kaiyuan 661699,Yunnan Province,China;Department of Radiology,The First Affiliated Hospital of Zhejiang University of Traditional Chinese Medicine,Hangzhou 310006,Zhejiang Province,China)

机构地区：[1]南方医科大学珠江医院影像诊断科,广东广州510282 [2]中国人民解放军联勤保障部队第九二六医院放射科,云南开远661699 [3]浙江中医药大学附属第一医院放射科,浙江杭州310006

出　　处：《中国CT和MRI杂志》2025年第3期3-5,共3页Chinese Journal of CT and MRI

摘　　要：目的分析不典型毛细胞型星形细胞瘤(pilocytic astrocytoma,PA)的MRI表现,加深认识,提高术前诊断率。方法回顾性分析经病理证实的22例PA患者的临床及影像资料,根据MRI表现分为不典型组(9例)和典型组(13例),所有患者术前均行MRI常规及增强扫描,对比分析2组患者影像学及临床信息。结果不典型组与典型组之间,年龄有统计学差异(P<0.05),肿瘤位置无统计学差异(P<0.05)。MRI征象中,强化方式在2组中有统计学差异(P<0.05),瘤周水肿无统计学差异(P>0.05)。结论与典型组相比,不典型组年龄偏大、多合并出血、钙化及含铁血黄素沉积、强化方式多样等特点,注意鉴别这些征象可以帮助鉴别诊断。Objective To analyze the MRI findings of atypical pilocytic astrocytoma(PA),deepen the understanding,and improve the preoperative diagnostic yield.Methods The clinical and imaging data of 22 patients with pathologically confirmed PA were retrospectively analyzed and divided into atypical group(9 cases)and typical group(13 cases)according to MRI findings,and all patients underwent conventional and enhanced MRI scans before surgery,and the imaging and clinical information of the two groups were compared and analyzed.Results Between the atypical group and the typical group,there was a statistically significant difference in age(P<0.05)and no statistically significant difference in tumor location(P<0.05).Among the MRI signs,the enhancement pattern was statistically different between the 2 groups(P<0.05),and peritumoral edema was not statistically different(P>0.05).Conclusion Compared with the typical group,the atypical group was older,more associated with bleeding,calcification and hemosiderin deposition,and diverse enhancement patterns,and attention to differentiating these signs could help the differential diagnosis of the group.

关 键 词：不典型 毛细胞星形细胞瘤 脑肿瘤 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学]