患者,男性,20岁,工人。因颅内高压症头部CT扫描:平扫在20～50mm层,右颞前底部及额后部可见3.8×4.2×4cm大小的低密度病变,考虑为囊性病变,于1987年11月24日入院。以右额颞占位28日行开颅探查。术中见额后、颞前,中颅窝底部位有6.5×6×5.5cm大小之囊腔,内充满淡黄色囊液约50ml。取囊壁送活检:囊壁菲薄,半透明与一般略增厚的软膜结构相同,囊壁附着一灰白色结节,椭圆 Patient, male, 20 years old, worker. CT scan of head due to intracranial hypertension: plain scan in the 20 ~ 50mm layer, the right front of the anterior and posterior portion of the visible low-density lesions of size 3.8 × 4.2 × 4cm, considered cystic lesions in November 24, 1987 Day admission. To the right forehead occupying 28 days craniotomy exploration. After the amount of intraoperative, temporal, anterior median cranial fossa with a size of 6.5 × 6 × 5.5cm cavity, filled with light yellow cyst fluid about 50ml. Take the biopsy to take off the wall: the wall thin, translucent and slightly thicker general soft membrane structure, the wall attached to an off-white nodules, oval