Eye Tumors: Ocular Melanoma,Retinoblastoma,Lymphoma
Tumors of the Eye : An Introduction
Tumors arising from the eyeball are termed intraocular if they are confined to the eyeball. Extraocular spread and a re-appearance (termed recurrence) after definite treatment is generally a harbinger of a poor response to therapy.
Melanoma, a malignant tumor arising from pigment cells called melanocytes is often occurs in the uveal tract of the eye constituted by the iris, ciliary body and choroid.
Iris melanomas often present in Caucasians as a brown nodule over the iris that deforms the pupil. Left untreated, iris melanomas tend to perforate the eyeball. The Ciliary body and choroid are covered by the white sclera and visible only when the pupil is widely dilated. A diffuse (mushroom or collar button shaped) mass with dilated blood vessels, in a person between 40-50 years, would suggest a ciliary body or choroid melanomas.
Choroidal Melanoma is the most common of all uveal tract melanomas. A person between 40-50 years of age may suddenly develop a mushroom or collar button shaped mass in the choroid. This growth is a choroidal melanoma, the most common among all the uveal tract melanomas.


