Dermatology Practical & Conceptual

Melanoma arising in a giant nevus spilus maculosus

Abstract Melanoma arising in a nevus spilus is rare. There are two distinct types of nevus spilus characterized by macular or papular speckles, respectively. We report the case of a melanoma that arose in association with a giant nevus spilus maculo…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Nevus Cells, Nevocytes, and Nevomelanocytes?

“A nevus (mole) is a benign neoplasm of pigment-forming cells, the nevus cell.” Lookingbill DP, Marks JG Jr. Principles of clinical diagnosis. In: Moschella SL, Hurley HJ, eds. Dermatology. 3rd ed. Philadelphia, PA: WB Saunders Co., 19…

Dermatology Practical & Conceptual

Blue nevus with a starburst pattern on dermoscopy

…pproximately 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. Howeve…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Basal-Cell Carcinoma Common in Nevus Sebaceus?

…ll carcinoma, rather than trichoblastoma, develops commonly in nevus sebaceus. In fact, just the opposite is the case; basal-cell carcinoma is associated uncommonly with nevus sebaceus, whereas trichoblastoma develops in it not uncommonly. Difference…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen planus-like keratosis

Lichen planus-like keratosis Presentation stereotypical Age and sex Older individuals bombarded by rays of the sun for many years Distribution of lesions Sun-exposed sites, especially the chest and shoulders Configuration of lesions Round Individual…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Junctional Activity and Active Junctional Nevus?

…onal activity ceases and the lesion is composed only of dermal nevus cells (intradermal nevus).” Weedon D. Lentigines, nevi, and melanomas. In: Skin Pathology. 2nd ed. New York, NY: Churchill-Livingstone, 2002:806. “Intradermal nevi sho…