Linear epidermal nevus is an uncommon diagnosis of benign lesions of the oral cavity. It is characterized by a congenital malformation arising from the ectoderm cells, which are arranged according to a typical linear configuration known as Blaschko's lines. We report a case of linear epidermal nevus of oral cavity in a 51-year-old lady or woman. The linear epidermal nevus of the oral cavity, al...

A 2-year-old boy presents with a 4 x 3-cm, darkly pigmented nevus on his back. His mother states that this lesion has been present since birth. Both parents noticed that the nevus has become slightly larger but deny any other changes in its appearance. The boy is otherwise healthy. He has no allergies and does not take any medication. There is no family history of skin disease or cutaneous mali...

Dermal melanocytosis is characterized by the presence of ectopic melanocytes in the dermis. The most common forms include the Mongolian spot, blue nevus, nevus of Ota, and nevus of Ito. Some types of dermal melanocytosis do not fit into any of these morphologic categories, however. Our case demonstrated an extensive amount of uniform deep blue patches of nevi with unilateral distribution on the...

1. Sugarman JL. Epidermal nevus syndromes. Semin Cutan Med Surg. 2007;26:221-30. 2. Solomon LM, Fretzin DF, Dewald RL. The epidermal nevus syndrome. Arch Dermatol. 1968;97:273-85. 3. Solomon LM, Esterly NB. Epidermal and other congenital organoid nevi. Curr Provi Pediatr. 1975;6:1-56. 4. Singal A, Dhaliwal U, Bhattacharyya SN , Rohatgi J, Singh N. Complex ocular choristomas in linear nevus seba...

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 findin...

Figure 1. The surgical incision is marked for first-stage serial excision. DESCRIPTION A 4-year-old girl presented with congenital melanocytic nevus on the right forearm.

The plaque-type blue nevus (PTBN) is a rare variant of blue nevus, of which only a few reports are described. A nodular growth within a preexistent PTBN should always alert to the possibility of malignant transformation. The authors report the first case of an atypical Spitz tumor arising on a congenital linear PTBN in a 60-year-old woman. The diagnosis of "atypical Spitz tumor" is here used to...