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Limbal Melanoma: How Well Does Treatment Work?

by Jamie

Reader Question
My dog has what looks like a limbal melanoma on his right eye. An eye specialist told me he won't know for sure until he removes the mass. It sits on the surface of the eye between the white and the cornea. It's been growing for several months, is less than a quarter inch across, and seems to have slowed down. It hasn't grown deep into the eye yet. He recommends removing it to find out if it's a melanoma, using a laser on the base, and maybe freezing treatment to kill any remaining cells. How successful is treatment for this, and what follow-up problems might we run into?


Answer from Our Team

Limbal melanomas are usually benign, and spread to the rest of the body hasn't been reported. They're more common in Labradors, Golden Retrievers and German Shepherds. Your specialist's plan, removing the mass and treating the base with laser or freezing, is the standard approach and is usually successful. In reported cases, very few tumors came back after removal plus extra treatment of the base.

Before surgery, the specialist will check how deep the tumor goes. Removing the mass can leave a thin spot in the eye's outer wall, so a graft is often used to patch it. If the tumor has grown deep into the eye, removing the eye may be advised instead. The removed tissue is sent to a lab to confirm what it is.

Follow-up usually means a cone to stop rubbing, any drops your specialist prescribes, and regular rechecks to look for regrowth. If a tumor ever regrows deep into the eye or causes pain or glaucoma, removing the eye may be advised, but that's uncommon.

See limbal melanoma in dogs.

This is general information, not a diagnosis. Please follow your own vet's advice.

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