Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Basal-Cell Carcinoma Common in Nevus Sebaceus?

…hat the majority of cases of basal cell carcinomas arising in nevus sebaceus are more accurately classified as benign trichoblastoma-like lesions, although authentic basal cell carcinoma is occasionally seen.” McKee PH, Calonje E, Granter SR. P…

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?

…nal 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 show…

Differential Diagnosis in Dermatopathology

Dermatofibroma vs. Desmoplastic Spitz’s nevus

Papules, nodules, and tumors that, on gross examination, are usually skin colored and, on histopathologic examination, consist of an epithelium-lined sac that contains fluid, cells, or both in the case of true cysts and of cysts that are associated…

Clinical Case Studies

Nevus of Ota

…e in skin texture. No scleral pigment was noted. Figure 1. Nevus of Ota at patient’s initial presentation. Nevus of Ota was suspected because of the history and morphology. Nevus of Ota is a dermal melanocytic disorder that presents as a pig…