视网膜母细胞瘤病时,房水LDH(乳酸脱氢酶)常常增加,对可疑病例有辅助诊断意义。作者报告一3岁男孩,视网膜呈漏斗形脱离,脱离的视网膜下有些黄白色结节,颞下视网膜有毛细血管扩张,超声检查未发现视网膜肿块或脉络膜增厚,临床拟诊Conts氏病。视网膜母细胞瘤的结节一般为白色或粉白色,如果同时有视网膜下渗出物则两者很难鉴别。近有报告视网膜母细胞瘤时,视网膜亦可有毛细血管扩张及视网膜下组织细胞,但超声检查可发现实体性肿瘤。本例房水及血清LDH测定,前者为600IU/l,后者为1961U/l,前者高出三倍,因 When retinoblastoma disease, aqueous humor LDH (lactate dehydrogenase) are often increased, the suspicious cases have diagnostic value. The authors report that a 3-year-old boy had a funnel-shaped retinal detachment, some yellow-white nodules detaching from the retina, telangiectasias in the infratemporal retina, and no evidence of retinal mass or choroidal thickening by ultrasonography. Conts’s disease was clinically diagnosed. Retinoblastoma nodules are generally white or pink, if both subretinal exudate, the two are difficult to identify. Nearly reports of retinoblastoma, the retina may also have telangiectasia and subretinal tissue cells, but ultrasound examination can be found in solid tumors. This case of aqueous humor and serum LDH determination, the former is 600IU / l, the latter is 1961U / l, the former is three times higher, due to