Histologic Diagnosis of Inflammatory Skin Diseases

Vitiligo

Vitiligo Synonyms Achroma vitiligo Presentation stereotypical Age and sex Young adults and women especially Distribution of lesions Localized, segmental, or widespread; often symmetric Individual lesions Macules and patches Course Protracted usually…

Differential Diagnosis in Dermatopathology

Discussions

Both pyogenic granuloma and Kaposi’s sarcoma consist of proliferations of endothelial cells, and both are hyperplasias. In most instances, papules and nodules of Kaposi’s sarcoma are differentiated easily by microscopy conventional from…

Differential Diagnosis in Dermatopathology

Discussions

Despite the differences biologic between dermatofibroma (an inflammatory process) and desmoplastic (fibrosing, largely intradermal) Spitz’s nevus (a benign neoplastic process), the two conditions have many attributes morphologic in common. Bot…

Differential Diagnosis in Dermatopathology

Discussions

Ascendency of the shave biopsy technique by dermatologists has created bedeviling problems for dermatopathologists and general pathologists because that slice (often sliver) method does not permit architectural patterns of skin diseases to be studie…

Differential Diagnosis in Dermatopathology

Dermatofibroma vs. Desmoplastic Spitz’s nevus

An inflammatory process that develops secondary to trauma, usually in the form of a penetrating injury or rupture of a follicle, and that proceeds through stages of granulation tissue with numerous extravasated erythrocytes, granulomatous inflammati…

Differential Diagnosis in Dermatopathology

Discussions

Dermatofibroma and dermatofibrosarcoma protuberans are lesions made up of dense diffuse infiltrates of mesenchymal cells in company with bundles of collagen, the two together occupying at least much of the thickness of the dermis and sometimes part…

Dermatology Practical & Conceptual

The dermatoscopic universe of basal cell carcinoma

Abstract Following the first descriptions of the dermatoscopic pattern of basal cell carcinoma (BCC) that go back to the very early years of dermatoscopy, the list of dermatoscopic criteria associated with BCC has been several times updated and rene…