患者女,20岁。自幼家长发现其右眼外侧巩膜上有一黄白色肿物生长,表面光滑,随年龄增长而增长,无眼痒、畏光、流泪及异物感,且对视力无影响,未引起重视。近来自觉右眼外眦角肿胀不适,眼球外转时加重,仍无视力下降及眼痒等症状。查体:一般情况良好。心、肺、腹及神经系统未见异常。眼科检查:双眼视力1．0,右眼结膜无充血,颞侧距角膜缘6mm见淡黄色肿物约10mm×10mm,外侧与外眦角相接, Female patient, 20 years old. Parents found that his right eye on the outer sclera has a yellowish white tumor growth, smooth surface, with age and growth, no itching, photophobia, tearing and foreign body sensation, and no effect on visual acuity, did not pay attention. Recently conscious swelling of the right eye outside the discomfort, exacerbation of the eye when the increase, there is still no vision loss and itchy eyes and other symptoms. Physical examination: generally good. Heart, lung, abdomen and nervous system without exception. Eye examination: binocular visual acuity 1.0, right conjunctival hyperemia, temporal corneal margin 6mm see pale yellow tumor about 10mm × 10mm, the outer phase with the outer corner,