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Dermatology Practical & Conceptual

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

…ghlights the significant association between MCC and squamous cell carcinoma and the uncommon clinical presentation of this combined tumor in the form of a cutaneous horn. Introduction Merkel cells, which likely derive from the neural crest, are basa…

Differential Diagnosis in Dermatopathology

"Pseudolymphoma," B-cell type vs. Malignant lymphoma, B-cell type

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…

Dermatology Practical & Conceptual

Balloon cell melanoma in primary care practice: a case report

…atopathologically the differential diagnosis includes balloon cell change in benign nevi, clear cell sarcoma, clear cell metastatic renal cell carcinoma, basal cell carcinoma, squamous cell carcinoma, malignant clear cell acrospiroma, sebaceous carci…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Langerhans’ Cell Granulomatosis?

“The cells of histiocytosis X [HX] have been designated “histiocytes” but the “ordinary” histiocytes encountered in healthy skin, in histiocytoma or various granulomatous processes are devoid of the granules. It could…

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