Kissing nevus of the penis: a case report and dermatoscopic findings

Abstract

Divided nevus, also known as kissing nevus, is a rare variant of congenital melanocytic nevi in which there are two adjacent nevi in areas of the body that undergo embryonic cleavage. The original description of this type of lesion was on the eyelid. The location on the penis is even rarer, with only 17 case reports in the literature so far, and only one of them described the dermoscopic findings. We report the case of a patient with divided nevus of the penis and its clinical, dermoscopic and histopathological features.

Divided or kissing nevus of the penis: A new case with dermoscopic findings

“…The dermoscopic findings of four pediatric cases have recently been reported . Two showed the globular pattern that we observed in our case at diagnosis.…”

“…As in our case, they are usually documented for the first time in the teens, but it is believed that they originate during the maturation of the external genitalia from the 11th to 14th gestational week . The separation between the glans and the prepuce would divide a single nevus in the embryo into two .…”

“…The eyelids are the most frequent location . Only 21 cases of kissing nevus of the penis have been reported to date . Their clinical, dermoscopic, and histopathologic features and management are summarized in Table .…”

“…Therefore, aesthetics and functionality are primary considerations in the management of these patients . Clinical features and benign dermoscopic findings are reassuring and alleviate the need for a biopsy, although the rare possibility of malignant transformation warrants close follow‐up, so we advise clinical and dermoscopic examination every 6 to 12 months—depending on the characteristics of the divided nevus—as is usually done with other congenital nevi …”

“…Divided nevus or kissing nevus is an unusual melanocytic nevus first described on the eyelids . Twenty‐one cases of divided nevus of the penis have been reported, and dermoscopic pictures are available in only four . We report a new case with dermoscopic findings.…”