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脉络膜肿瘤的鉴别诊断是困难的。1978年Gass曾经报导过一例4岁女性患者,左眼视乳头附近发现一黄白色、边界清楚而不规则、轻度隆起的肿物,被怀疑为脉络膜黑色素瘤。~(32)P试验为强阳性,随将眼球摘除。组织病理学检查发现主要由骨板构成,其内充满结缔组织及一些薄壁扩张的血管,血管与Bruch膜及肿瘤表面的毛细血管相联系。Gass认为此肿瘤可能是起源于残存的原始中胚叶组织,为先天性发育性肿瘤,并称其为迷离瘤。其临床特点可从以下2病例加以说明。一例为43岁女性患者,左眼长期视力障碍,视力为1/10,除视乳头附近有一黄白色轻度隆起
The differential diagnosis of choroidal neoplasms is difficult. In 1978, Gass reported a case of a 4-year-old female patient. A yellowish-white, clear-cut, irregular, and slightly raised mass was found near the left eye’s optic nerve nipple. Choroidal melanoma was suspected. The ~(32)P test was strongly positive and the eyeball was removed. Histopathological examination revealed that it was mainly composed of bone plates, which were filled with connective tissue and some thin-walled, dilated blood vessels. The blood vessels were associated with the Bruch membrane and capillaries on the tumor surface. Gass believes that this tumor may have originated from the remaining primitive mesodermal tissue, a congenital developmental tumor, and it is called a tumor. Its clinical features can be explained from the following 2 cases. One case is a 43-year-old female patient with long-term visual impairment in the left eye with visual acuity of 1/10, except for a yellowish-white mild uplift near the optic disc