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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…

Histologic Diagnosis of Inflammatory Skin Diseases

Subcutaneous T-cell lymphoma

…ulitis is no more a panniculitis than is mycosis fungoides or leukemia that happens to involve fat lobules extensively. Each is a malignant neoplastic process, not an inflammatory one. Subcutaneous T-cell lymphoma is not related to histiocytic lympho…

Dermatology Practical & Conceptual

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

Abstract Merkel cell carcinoma (MCC) is a rare cutaneous neuroendocrine malignancy, which usually presents as an asymptomatic, rapidly growing, firm nodule on sun-damaged skin. We present a 93-year-old female who presented with a “cutaneous horn” on…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Mucha-Habermann Disease a Lymphocytic Vasculitis?

…9:7–16. “Pityriasis lichenoides is essentially a lymphocytic vasculitis in which the associated inflammatory cell infiltrate shows exocytosis into the epidermis with obscuring of the dermoepidermal interface.” Weedon D. The vascul…

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