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How are intraocular melanoma tumors classified?

Tumors caused by intraocular melanoma are often classified by size. This system of classification is similar to staging, which is how other types of cancer are described. The size of the intraocular melanoma tumor is described according to diameter and thickness. The sizes generally used are as follows:

  • Small: diameter of at least 5 millimeters, thickness of 1 to 3 millimeters
  • Medium: diameter of less than 16 millimeters, thickness of 2 to 10 millimeters
  • Large: diameter of at least 16 millimeters, thickness of at least 10 millimeters
  • Diffuse: a flat tumor that covers a large portion of the uveal tract

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.