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melanocytoma
melanocytoma[mə‚lan·ə‚sī′tō·mə] (medicine) A benign tumor composed principally of melanocytes. melanocytoma
mel·a·no·cy·to·ma (mel'ă-nō-sī-tō'mă), 1. A pigmented tumor of the uveal stroma. 2. Usually benign melanoma of the optic disc, appearing in markedly pigmented people as a small deeply pigmented tumor at the edge of the disc, sometimes extending into the retina and choroid; malignant metaplasia is rare. [megalo- + cyto- + G. -oma; tumor] mel·a·no·cy·to·ma (mel'ă-nō-sī-tō'mă) 1. A pigmented tumor of the uveal stroma. 2. Usually benign melanoma of the optic disc, appearing in markedly pigmented people as a small deeply pigmented tumor at the edge of the disc, sometimes extending into the retina and choroid. [melano- + cyto- + G. -oma; tumor]melanocytoma A harmless benign tumour, mainly of melanocytes, found on the OPTIC DISC, especially in black people.melanocytomaA benign, usually bilateral, pigmented tumour which is most commonly found in the optic disc arising from dendritic uveal melanocytes in the lamina cribrosa of the optic nerve head but may occur anywhere throughout the uveal tract. The patient's visual field presents an enlarged blind spot. The condition is more frequent in dark skinned people. |