Differential Diagnosis in Dermatopathology

Erythroderma of psoriasis vs. Erythroderma of mycosis fungoides

Extramammary Paget’s disease is an apocrine carcinoma that begins within the epidermis and presents itself clinically as a patch or a subtle plaque that extends centrifugally for many years before becoming a readily discernible thick plaque, a…

Histologic Diagnosis of Inflammatory Skin Diseases

Pattern Analysis in Historical Perspective

…is morphologically of the (1) patterns formed by inflammatory cells, sometimes in conjunction with changes in epidermal and adnexal epithelium, and the (2) character of the inflammatory cells themselves. Although algorithms were utilized in the appli…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Lentigo Maligna?

…of a recognizable series of events affecting the melanocytic cellular system in a way similar to these stages. First, there is a long period characterized by an increase in number of structurally normal melanocytes per unit area, which is associated…