Both acquired bilateral nevus of Ota-like macules (ABNOM) and nevus of Ota are characterized by the presence of dermal melanocytes. There are no differences in the method of treatment, however, postinflammatory hyperpigmentation (PIH) develops more often in ABNOM than in nevus of Ota following treatment. We investigated the differences in the development of PIH after treatment between ABNOM and...

Sun exposure and high prevalence of melanocytic nevi are major risk factors for melanoma, but the relationship between them is not well understood. This study examines the relationship between sun exposure (detailed by anatomic location and history of site-specific sunburns) and the presence of melanocytic nevi on 743 White children in Denver, Colorado. Parental reports of site-specific sunburn...

An 11-year-old girl presented to our department with a blue-gray papule approximately 4 mm in diameter. We suspected that it was a blue nevus or a pigmented Reed/Spitz nevus. On dermoscopic observation, the lesion showed homogeneous black-bluish pigmentation. This dermoscopic feature was suggestive of a blue nevus. However, near-circumferential streaks and a global feature of a "starburst patte...

Becker Nevus of the LegWith Lipoatrophy Becker nevus presentsmost commonly as a patchy hyperpigmentation with dark hairs on the upper arms or the shoulder girdle ofmale patients. Its prevalencehas beendetermined at 0.52 percent in a large cohort ofmale Frenchmilitary recruits between the ages of 17 and 26 years.1 Themale to female ratio of Becker nevus has been approximated to be about 4:1, alt...

Phacomatosis pigmentovascularis is a rare syndrome, defined as the simultaneous presence of vascular nevus and melanocytic nevus in the same patient. We report the case of a 53-year-old woman presented with dermal melanosis and extensive vascular nevus, which match the typical manifestations of phakomatosis pigmetovascularis of cesioflammea type, according to Happle's classification. The rare o...

Nevus of Ota (nevus fuscoceruleus ophthalmomaxillaris) is a benign dermal melanocytic hematoma clinically appearing as a bluish-brown discoloration in the ophthalmic and/or maxillary branches of the trigeminal nerve. The condition first described by Ota and Tanino occurs predominantly in Asians with estimated frequency of 0.014% to 0.034%, but can be found in other ethnicities. Historical thera...

Melanocytic nevus is common pigmented skin tumor, but it has rare occurrence near the external auditory canal. A skin graft is required if a wide surgical excision is performed for the nevi occurring near the external auditory canal. A CO2 laser was considered to be a good alternative for the removal of melanocytic nevus in this area. We herein report a case of compound nevus occurring near the...

Giant congenital melanocytic nevus is usually defined as a melanocytic lesion present at birth that will reach a diameter ≥ 20 cm in adulthood. Its incidence is estimated in <1:20,000 newborns. Despite its rarity, this lesion is important because it may associate with severe complications such as malignant melanoma, affect the central nervous system (neurocutaneous melanosis), and have major ps...

Giant congenital melanocytic nevus is usually defined as a melanocytic lesion present at birth that will reach a diameter ≥ 20 cm in adulthood. Its incidence is estimated in <1:20,000 newborns. Despite its rarity, this lesion is important because it may associate with severe complications such as malignant melanoma, affect the central nervous system (neurocutaneous melanosis), and have major ps...