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Pronunciation: mel'a-no-si-to'ma


  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]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.