Histologic Diagnosis of Inflammatory Skin Diseases

Erythema multiforme

…ema multiforme in children, and Lyell catalogued two unrelated diseases under the lone heading of “toxic epidermal necrolysis”; one of those diseases is an analogue in adults of Stevens-Johnson syndrome, i.e., severe widespread erythema m…

Differential Diagnosis in Dermatopathology

Trichoadenoma vs. Microcystic adnexal carcinoma

An inflammatory process that tends to involve mucous membranes, as well as skin, and of the latter the acra especially. The stereotypical presentation is lesions composed of concentric rings (“iris” and “target” type). The co…

Differential Diagnosis in Dermatopathology

Discussions

Features clinical common to amputation neuroma secondary to rudimentary supernumerary digit and acquired digital fibrokeratoma are location, shape, and consistency. Both conditions occur on or near fingers and both are firm, keratotic, polypoid proj…