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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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I Have Had A Benign Cyst On The Thumb For

I have had a benign cyst on the thumb for more that 3 months. It bursts when getting caught on things. It's not hurting . It hasn't burst for a few weeks now. I have noticed that it has developed a black ring around it now and it looks darker in colour. Why is this?
posted on Sun, 31 Jan 2016
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