原发性自然性脑脊液鼻漏罕见,作者报告2例。例1,女,50岁,自述入院前两周,当头部前倾时便有清亮液体从右鼻孔流出,并感口内有咸味。无头部外伤史及感染、手术、新生物史。流出液体化验检查,葡萄糖为65mg/dl,头颅CT检查未见骨质破坏或肿物,右侧蝶窦内有液平面,碘剂脑池造影CT扫描,见鞍前部有较多造影剂存留,提示为部分性空蝶鞍伴有活动性脑脊液漏入右侧蝶窦。采用唇下经鼻中隔进路进入蝶窦,发现右侧蝶窦侧壁较薄,有多个小孔,脑脊液即从小孔流入蝶窦,由大 Primary natural cerebrospinal fluid rhinorrhea rare, the authors report 2 cases. Example 1, female, 50 years old, readme Two weeks before admission, when the head is leaning forward, clear liquid flows out from the right nostril, and the inside of the mouth is salty. No history of head injury and infection, surgery, new biological history. Outflow of liquid laboratory tests, glucose 65mg / dl, cranial CT examination showed no bone destruction or tumor, there is a liquid level in the right sphenoid sinus, iodine cisterns angiography CT scan, see the anterior saddle with more contrast agent retention , Suggesting that part of the empty saddle with active cerebrospinal fluid leakage into the right sphenoid sinus. The use of the lip through the nasal septum into the sphenoid sinus and found that the right side of the sphenoid sinus wall thinner, a number of small holes, cerebrospinal fluid flow from the hole into the sphenoid sinus, from large