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报告经手术及病理证实的78例星形细胞瘤CT扫描结果。主要CT表现为肿瘤多形状不规则,呈低密度或混杂密度,常有囊性变,少数有钙化,强化扫描多数影像增强。肿瘤周围多有水肿,常见脑室受压移位。不同级别的星形细胞瘤CT表现有一定差别,如囊性变在恶性度高的肿瘤多见,注射对比剂后恶性度高的均显示影像增强。Ⅰ、Ⅱ级与Ⅲ、Ⅳ级相比有极显著差异,结合误诊病例,讨论了星形细胞瘤与脑膜瘤、颅咽管瘤、转移瘤、脑脓肿等CT表现的区别。
Report of 78 cases of astrocytoma confirmed by surgery and pathology CT scan results. The main CT manifestations of irregular multi-shaped tumor, was low density or mixed density, often cystic change, a few have calcification, enhanced scan enhancement of most images. More edema around the tumor, common ventricular pressure shift. Different grades of astrocytoma CT performance there are some differences, such as cystic degeneration in the more common malignancy of the tumor, injection of contrast agent after the high degree of malignancy showed enhanced images. Ⅰ, Ⅱ grade and Ⅲ, Ⅳ grade compared to a very significant difference, combined with misdiagnosed cases, the discussion of astrocytoma and meningioma, craniopharyngioma, metastases, brain abscess CT performance differences.