血管网状细胞瘤的CT、MRI诊断(附75例分析)

DIAGNOSIS OF ANGIORETICULOMA WITH CT AND MRI (REPORT OF 75 CASES)

为了提高血管网状细胞瘤的CT及MRI诊断水平 ,作者回顾性分析了 75例经CT(6 9例)和MRI(19例 )检查的结果。结果显示 ,肿瘤位于小脑 6 7例 ,额叶 2例 ,颞叶 1例 ,小脑累及延髓、枕大孔、椎管、脊髓和桥脑小脑角各 1例。CT见囊性低密度伴瘤壁结节 (囊中瘤) 35例 ,囊性低密度 18例 ,环形囊壁 11例 ,实质性高密度 4例 ,混合密度 6例。 12例MRI呈长T1、长T2 信号伴瘤壁结节。手术病理 ,4 7例囊性肿瘤伴瘤壁结节 0 1～ 3cm ;单发者 71例 ,多发者 3例 ,1例颞叶多形性胶质母细胞瘤合并多发性血管网状细胞的混合瘤。分析结果表明 ,CT及MRI对位于小脑半球或蚓部向邻近延伸生长 ,无“囊中瘤”特点或实质性肿瘤 ,结合肿瘤增强显著或瘤内有顺磁性血管流空表现 ,病人为中青年 ,病程特点 。

To improve the diagnostic level of CT and MRI in intracranial angioreticuloma. 75 cases of intracranial angioreticuloma were examined by CT, and 19 of them were re examined with MRI. The tumor was located in the cerebellum in 67, frontal lobe in 2, temporal lobe in 1, cerebellum with involvement of medulla, great occipital foramen, vertebral canal, spinal cord and cerebropontial angle in 1, respectively. CT displayed cystic low density accompanied by tumor wall nodules (midcystic tumor) in 35, cystic low density in 18, circular cystic wall in 11, parenchymatous high density in 4, and mixed density in 6. Long T 1 and T 2 signals with tumor wall nodules were displayed in MRI in all of 12 patients. Postoperative pathology: 47 were cystic tumors with tumor wall nodules in the size of 0 1～3 0cm in diameter. The tumor was solitary in 71 cases, and multiple is 3, and the mixed tumor of glioblastoma multiforme and multiple angioreticuloma was located in the temporal lobe in 1 patient, which was rare. The tumor should be diagnosed as angioreticuloma when it was located in the cerebellar hemisphere or vermis without the feature of midcystic tumor or parenchymatous tumor in CT and MRI profiles, with the features of obvious reinforcement or paramagnetic vascular empty in tumor, and a short history.