See a urologist. Especially if you at risk for infections (eg dm/on steroids/...) you should be evaluated by a licensed urologist to have the lesion removed carefully. If there is any question of malignancy or transmitability, a specimen should be evaluated by a pathologist. Obviously benign lesions cab be cauterized, "frozen" cryo-therapy (liquid nitrogen) or chemically removed.
See dermatologist. I would recommend seeing your dermatologist.