1 doctor weighed in:

Very old slightly raised skin colored 4 mm symm circle side of knee. Dry looking skin when scratched. Defined border. No itching, etc. Wart?

1 doctor weighed in
Dr. Jerome Litt
Dermatology

In brief: KNEE LESION

WITHOUT ACTUALLY SEEING THIS "CIRCLE" ON THE KNEE THERE IS NO WAY THAT I COULD EVEN GUESS WHAT THIS MIGHT BE.
BEST TO SEE YOUR PCP OR A DERMATOLOGIST. BEST LUCK.

In brief: KNEE LESION

WITHOUT ACTUALLY SEEING THIS "CIRCLE" ON THE KNEE THERE IS NO WAY THAT I COULD EVEN GUESS WHAT THIS MIGHT BE.
BEST TO SEE YOUR PCP OR A DERMATOLOGIST. BEST LUCK.
Dr. Jerome Litt
Dr. Jerome Litt
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