松果体实质细胞肿瘤的CT和MRI诊断

袁 菁; 高培毅

中国临床医学影像杂志 ›› 2009, Vol. 20 ›› Issue (9) : 657-660.

论著

松果体实质细胞肿瘤的CT和MRI诊断

袁菁，高培毅

作者信息 +

CT and MRI diagnosis of pineal parenchymal tumors

YUAN Jing, GAO Pei-yi

Author information +

文章历史 +

摘要

目的：总结和比较3种松果体实质细胞肿瘤的CT和MRI表现，以提高影像诊断水平。方法：回顾性分析18例松果体实质细胞肿瘤的CT和MRI表现。根据病理结果将全部病例分为松果体细胞瘤、中间分化型松果体实质细胞肿瘤和松果体母细胞瘤3组，使用SPSS 13.0统计学软件对观察指标在3组间的分布进行统计学检验。结果：肿瘤边界是否清楚（χ2＝10.275）、肿瘤内血管流空信号（χ2＝10.929）在3组间有显著统计学差异（P<0.01），肿瘤形态（χ2＝7.907）和肿瘤最大径（F＝4.766）在3组间有统计学差异（P<0.05）。结论：松果体母细胞瘤与中间分化型松果体实质细胞肿瘤在CT和MRI表现上难以区分。对松果体细胞瘤、松果体母细胞/中间分化型松果体实质细胞肿瘤进行鉴别诊断时，肿瘤边界是否清楚、肿瘤内血管流空信号、肿瘤形态和肿瘤最大径等因素具有鉴别诊断意义。

Abstract

Objective: To summarize the CT and MRI findings of pineal parenchymal tumors and to discuss the differential diagnosis of pineocytoma(PC), pineal parenchymal tumor of intermediate differentiation(PPTID) and pineoblastoma(PB). Methods: The CT and MRI findings of 7 cases of PC, 4 cases of PPTID and 7 cases of PB were reviewed retrospectively. All cases were proved by operation and pathology. The data were evaluated by statistical tests using SPSS 13.0. Results: Tumor margin（χ2＝10.275）, flow void（χ2＝10.929）, shape（χ2＝7.907） and maximum size（F＝4.766） were statistically significant among the three groups. Conclusion: Our data indicate that tumor margin, shape, maximum size and flow void are useful factors to differentiate PC and PB. However, PPTID and PB can not be differentiated on CT and MRI findings.