NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,798 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

stage IIIB intraocular melanoma of the ciliary body and choroid
(... IN-truh-AH-kyoo-ler MEH-luh-NOH-muh ... SIH-lee-ayr-ee BAH-dee ... KOR-oyd)
Stage III is divided into stages IIIA, IIIB, and IIIC. In stage IIIB, the tumor (1) has spread to the ciliary body and is size category 3 (15.1 to 18 millimeters wide and 3.1 to 6 millimeters thick; or 12.1 to 18 millimeters wide and 6.1 to 9 millimeters thick; or 3.1 to 18 millimeters wide and 9.1 to 12 millimeters thick; or 9.1 to 15 millimeters wide and 12.1 to 15 millimeters thick). The tumor has spread through the sclera to the outside of the eyeball. The part of the tumor outside the eyeball is not more than 5 millimeters thick; or (2) has spread to the ciliary body and is size category 4 (more than 18 millimeters wide and may be any thickness; or 15.1 to 18 millimeters wide and more than 12 millimeters thick; or 12.1 to 15 millimeters wide and more than 15 millimeters thick); or (3) is size category 4 and has spread through the sclera to the outside of the eyeball. The part of the tumor outside the eyeball is not more than 5 millimeters thick. The tumor has not spread to the ciliary body.