If eye cancer is diagnosed, the doctor needs to know the stage, or extent, of the disease to plan the best treatment. Staging is a careful attempt to find out whether the cancer has spread, and if so, to what parts of the body. The doctor may determine the stage of eye cancer at the time of diagnosis, or may need to give the patient more tests.
Stages - Intraocular Melanoma
- The tumor is at least 5 millimeters in diameter and from 1 to 3 millimeters thick.
- The tumor is less than 16 millimeters in diameter and from 2 to 10 millimeters thick.
- The tumor is at least 16 millimeters in diameter or more than 10 millimeters thick.
- The tumor is flat and grows widely across the uvea
Stages - Intraocular/Extraocular Retinoblastoma
In intraocular retinoblastoma, cancer is found in the eye and may be only in the retina or may also be in other parts of the eye such as the chroid, ciliary body, or part of the optic nerve. Cancer has not spread to tissues around the outside of the eye or to other parts of the body.
In extra ocular (metastatic) retinoblastoma, cancer has spread beyond the eye. It may be found in tissues around the eye or it may have spread to the central nervous system (brain and spinal cord) or to other parts of the body such as the bone marrow or lymph nodes.