侧脑室肿瘤的CT和MRI诊断

CT and MRI diagnosis of tumors in the l ateral ventricles

目的:提高侧脑室肿瘤的CT和MRI诊断正确性。材料和方法:本文收集了经手术和病理证实的侧脑室肿瘤64例,按肿瘤的发病年龄、性别以及部位分组列表。结果:①不同的侧脑室肿瘤CT、MRI表现有所不同,部分具有特征性表现。②侧脑室肿瘤大多具有年龄和性别特征。如脑膜瘤好发于20～60岁,女性好发。而脉络丛乳头状瘤和室管膜下巨细胞星形胶质瘤见于20岁以下的青少年,前者男性多见。③不同的侧脑室肿瘤,其好发部位不同。如脑膜瘤875%和脉络丛乳头状瘤75%好发于侧脑室三角区。室间孔区常见的肿瘤是室管膜下巨细胞星形胶质瘤50%、神经细胞瘤75%等。结论:侧脑室肿瘤根据其CT和MRI特点,结合临床和发病年龄、性别、部位以及周围脑实质水肿情况可以提高诊断正确率。

Objective:To improve CT and MRI diagnostic accuracy of tumors in the lateral ventricles.Materials and Methods:Sixty -four cases of tumors in the lateral ventricles proved by surgery an d pathology were reported.They were divided into groups de-pend upon patients age,sex and the s ite of the tumors.Results:①CT and MRI appearances of different t umors were different.②Most tumors in the lateral ventricles were speciality of age and sex.For examp le,meningiomas frequently occurre d in patients of 20～60years old.Female:male =13∶3.Choro id plexus papilloma,Subependymal g iant cell astrocytoma frequently occurred under 20years old.The former occurred predominan tly in male.③The location of specific tumors usually was different.Such as meningiom as(87.5%)and choroid plexus papillomas(75%)frequently occurred in the atrium of lateral ventricule.Subependymal g iant cell astro-cytoma and central neurocytoma freq uently occurred in the foramen of mon ro.Conclusion:The accuracy of diagnosis of latera l ventricu-lar tumors will improve when combini ng their CT and MRI appearances,loca tions with clinical data such as pati ent's age and sex.