Histologic Diagnosis of Inflammatory Skin Diseases

Acquired epidermolysis bullosa

…acquired epidermolysis bullosa seem to be centered around an infundibulofollicular unit. Having studied numerous examples of acquired epidermolysis bullosa, we remain unable to formulate specific, repeatable criteria applicable to all manifestations…

Dermatology Practical & Conceptual

About transitions

Dear Readers, Mark A. Hurt, the Editor of the Book Review Section of Dermatology Practical & Conceptual has decided, after a decade of contributions, that the time has come to him to transition out of his role. Mark was recruited by Bernie Acker…

Differential Diagnosis in Dermatopathology

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Apocrine mixed tumor Eccrine mixed tumor…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Apocrine mixed tumor Eccrine mixed tumor 1. Asymmetrical 1. Symmetrical 2. Epithelial component not distributed in uniform fashion 2. Epithelial component distributed in relatively uniform manner 3. Some solid zones of neoplastic epithelium…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Apocrine (clear-cell) hidradenoma Eccrine (poroid) hidradenoma 1. Connects to infundibula often 1. No connection to infundibula; merges with surface epidermis rarely 2. Glandular structures usually 2. Ductal structures usually 3. “Dec…