Asymptomatic Blue Nevus—like Macule

REPORT OF A CASE A 38-year-old woman presented with a 18-year history of a pigmented lesion located on the dorsal aspect of the proximal phalange of the left ring finger. It had slowly enlarged but was asymptomatic, and the patient had no other medical complaints except for her concerns about the cosmetic appearance of her skin. Her medical history revealed that at the age of 19 years she had had a tragic accident, after which her silver ring was embedded in her skin. She was subsequently operated on, and the surgery left her with a little scar. One year later she observed a bluish macule surrounding her scar. On physical examination, we saw a blue-gray oval macule, 1 cm in diameter, with a little scar in the middle. The macule had a smooth surface and was firm and mobile, with clinical features similar to those of a blue nevus