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报告一例CT误诊的右额叶恶性星形细胞瘤.病人男性,40岁,因首次晚发性全身痉挛发作而住院.全身及神经系统检查除血压高230/150mmHg,视网膜中度动脉硬化外无异常.CT检查发现右额叶有一楔形低吸收区伴轻微的团块效应.脑电图、放射性核素脑闪烁照像和颈动脉造影未发现特异改变.诊断暂定为原发性高血压脑梗塞出院.在首次发作癫痫后13个月再次CT检查揭示右额叶低吸收区的中心部出现不规则的高吸收区,并且仍伴有轻微的团块效应,在同一部位放射性核素脑闪烁照像发现清楚的高密度灶,右颈内动脉造影发现右侧大脑前动脉轻度向左侧移位,右额极有小园形异常血管网.此时,没有神经定位症状和颅内压增高,脑电图描记在正常范围.右额探查术发现肿瘤占据右前额极,在脑实质内弥漫性浸润,底部达侧脑室前角.其范
Reported a case of CT misdiagnosed right frontal malignant astrocytoma Male patient, 40 years old, hospitalized for the first episode of late onset of generalized spasticity Whole body and neurological examination In addition to high blood pressure 230 / 150mmHg, except for moderate retinal arteriosclerosis Abnormalities .CT examination found that the right frontal lobe has a wedge low absorption area with a slight clump of EEG, radionuclide brain scintigraphy and carotid angiography found no specific changes in the diagnosis of tentatively scheduled for essential hypertension brain Infarction.Another CT examination at 13 months after the first episode of epilepsy revealed an irregularly high area of absorption in the central part of the low right frontal lobe with a slight clumping and a radionuclide brain flash at the same site Photographs found a clear high-density lesions, right internal carotid artery angiography found that the right anterior cerebral artery to the left shift slightly, the right forearm very small circular anomalous vascular network at this time, there is no neurological symptoms and intracranial pressure Increased, EEG tracing in the normal range.The right forehead exploration found that the tumor occupies the right frontal very, diffuse infiltration in the brain parenchyma, the bottom up to the anterior horn of the lateral ventricle .Fan