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嗅神经上皮瘤是鼻腔少见的恶性肿瘤,多发生于鼻腔及副鼻窦,而肿瘤主要向颅内生长更少见,我们遇见一例,报告如下: 男性,32岁。头痛加重2年,半月来伴恶心、呕吐。嗅觉丧失,双眼视力均为0.3,瞳孔等大等圆,病理征未引出。头颅内CT平扫前颅底、筛窦及左额叶区域见一类圆形等密度病灶,内有小片状低密度区,边界欠清,CT值为30Hu,左侧脑室前角受压,中线结构右移,瘤周见有中度水肿区。增强后病灶明显强化,密度欠均匀,CT值为46Hu。头颅MRI平扫轴位显示前颅底、筛窦及左额叶异常信号,T_1W(TR=500ms,TE=30ms)呈等、高混杂信号,T_2W(TR=250ms,TE=30/60/90/120ms)高信
Olfactory epithelial tumor is a rare malignant nasal cavity, occurred in the nasal cavity and paranasal sinuses, and the tumor to intracranial growth is less common, we met one case, the report is as follows: Male, 32 years old. Headache aggravate 2 years, a half months with nausea and vomiting. Loss of smell, binocular vision are 0.3, pupil and other large round, pathological levy did not lead. Intracranial CT scan anterior skull base, ethmoid sinus and left frontal region see a class of circular isodense lesions, there are small pieces of low-density area, the border is not clear, CT value of 30Hu, left ventricular anterior chamber pressure , The right shift in the midline structure, see the tumor around the moderate edema area. After enhanced lesion was significantly enhanced, density less uniform, CT value of 46Hu. The cranial MRI plain axial images showed abnormal signals of the anterior skull base, ethmoid sinus and left frontal lobe. T_1W (TR = 500ms, TE = 30ms) showed equal and high promiscuous signals with T_2W (TR = 250ms, TE = 30/60/90 / 120ms) high letter