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Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Basal-Cell Carcinoma Common in Nevus Sebaceus?

…Third Series, Fascicle 1:126-127. The development of basal cell carcinoma within a naevus sebaceous of Jadassohn (NSJ) has commonly been reported. Ball EA, Hussain M, Moss AL. Squamous-cell carcinoma and basal-cell carcinoma arising in a naevus se…

Dermatology Practical & Conceptual

The dermatoscopic universe of basal cell carcinoma

…ssical nodular non-pigmented BCC has to be discriminated from squamous cell carcinoma (SCC), amelanotic melanoma and other non-pigmented tumors, while heavily pigmented variants have to be differentiated mainly from melanoma and nevi. Instead, the di…

Dermatology Practical & Conceptual

Saved by step sections: an unusual presentation of basal cell carcinoma

Abstract Background: Basal cell carcinoma usually occurs in sun exposed areas of older male individuals. Objectives: To emphasize the importance of histological step sections in the pursuit of the correct diagnosis when microscopic findings do not…

Dermatology Practical & Conceptual

Incidental Merkel cell carcinoma in a cutaneous horn: a case report

…face. On excision, histologic examination revealed a combined squamous cell carcinoma in situ with underlying MCC. Merkel cell polyomavirus immunohistochemistry was negative in this lesion. This case report highlights the significant association betw…

Differential Diagnosis in Dermatopathology

Trichoepithelioma vs. Infundibulocystic basal-cell carcinoma

Mammary Paget’s disease is an apocrine carcinoma that begins in mammary glands and extends along lactiferous ducts to the epidermis where it is seen clinically as a scaly, crusted, or eroded plaque on the nipple or areola of women mostly, and…

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