Unusual Nevus (Nevus Spilus). Presented by Eva V. Page, MD, and Dorothy B. Windhorst, MD.
This 14-year-old white girl was noted to have a brown pigmented spot on her back at about three months of age. The lesion has grown over the years in proportion to the growth of the patient. It was originally uniformly light brown in color, but five to seven years ago small, much darker spots developed, appearing throughout the lesion over a period of many months. No significant change in appearance or symptoms has occurred in the past year. Family history is significant in that her mother had a malignant melanoma removed from her leg three years ago.Physical examination revealed a light brown, macular patch on the back, "A"-shaped, 20 × 7 cm in size. The lesion was sprinkled with many darkly pigmented, slightly palpable, 1- to 2-mm papules, some of them with flat halos.
Cars WA. CHICAGO DERMATOLOGICAL SOCIETY. Arch Dermatol. 1972;105(1):115-119. doi:10.1001/archderm.1972.01620040079021