松果体区肿瘤的MRI诊断与鉴别诊断

目的:提高对松果体区肿瘤的诊断与鉴别诊断的正确率。方法:回顾性分析18例松果体区肿瘤的MR表现。结果:生殖细胞瘤4例,畸胎瘤3例,1例绒毛膜癌,胶质瘤4例,脑膜瘤2例,松果体母细胞瘤、神经母细胞瘤、皮样囊肿及蛛网膜囊肿各1例,仅通过MR信号较难诊断,由于肿瘤组织学来源多,可通过一些特殊信号如脂肪、囊变、出血、种植播散等,并结合临床检查来进行鉴别诊断。结论:MR可以较好的显示松果体区肿瘤的位置与形态,各种肿瘤MR表现缺乏特异性,可通过肿瘤内的特征性信号帮助诊断与鉴别诊断。

MRI diagnosis and differential diagnosis of pineal region tumors

Objective:To improve the diagnosis and differential diagnosis rate of pineal region tumors.Methods:The MRI findings of 18 pineal region tumors are retrospectively analyzed.Results:4 cases were geminoma,3 cases were teratoma,1 case was choriocarcinoma,4 cases were glioma,2 cases were meningiomas,pineoblstoma,neuroblastoma,dermoid cyst and arachnoid cyst each had one case.It maybe very difficult if we diagnosed only through MR signals.Due to the multitude origin of histology,we can diagnose through some special signals,such as adipose,cystic degeneration,hemorrhage and implant dissemination.We can also combined with clinical examination which is help to differential diagnosis.Conclusion:The position and appearance of the pineal region tumors can be clearly displayed on MR.The MR findings of every kind tumor had no specificity.The special signal could help diagnosis and differential diagnosis.