先天性颅内蛛网膜囊肿临床少见,我院收治1例,报告如下:1　临床资料与方法患者　男性,13岁,两年前起经常诉头痛,伴恶心,记忆减退,经常遗物,学习成绩下降。体查:发育正常,定向及判断力正常,近记忆力差。头颅无明显增大,眼底视乳头轻度水肿,其它神经系统检查阴性。颅骨平片:右颞骨 Congenital intracranial arachnoid cyst clinical rare, admitted to our hospital in 1 case, the report is as follows: 1 Clinical data and methods Patients Male, 13 years old, two years ago often complained of headache, nausea, memory loss, often relics, academic performance decreased . Physical examination: normal development, orientation and judgment of normal, near memory poor. No significant increase in the skull, fundus optic disc mild edema, negative other neurological examination. Skull plain film: right temporal bone