Tar-Like Dark Spots and What a Biopsy Report Means
by A reader
The report describes thickened, darkened skin with extra layers of surface keratin and only mild inflammation. These findings are typical of a benign condition, often a seborrheic keratosis-like lesion, a wart (papilloma), or skin that has darkened and thickened from long-term irritation. The changed cells described can also be seen with viral warts, so ask your pathologist or vet whether a papillomavirus was suspected.
The good news is that the report does not describe cancer. Benign spots like these often need no treatment. If they bother your dog, catch on things or keep growing, they can usually be removed, and some viral warts go away on their own.
Ask your vet to explain the final diagnosis line on the report, if there is one. That tells you best whether to watch or treat.
See black skin in dogs and warts on dogs.
This is general information, not a diagnosis. Please follow your own vet's advice.
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