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Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Verruciform Xanthoma?

…present since shortly after birth, was a “small pebbly patch” that grew progressively with age. The changes histopathologic matched those reputed to be characteristic of verruciform xanthoma. Gradual “transition” from epithel…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Toxic Erythema?

…uption. Clinically, fixed drug eruption appears as a solitary patch or plaque, or as several such lesions, often situated on a mucous membrane or on genital skin. A blister may form atop a plaque. In Caucasians, the hue of fixed drug eruption is dist…

Differential Diagnosis in Dermatopathology


…uction of tissues locally. Kaposi’s sarcoma develops synchronously in many organs in which it evolves through stages analogous to those of patch, plaque, and nodule in the skin. Search Derm101.com for dermatofibroma and Kaposi’s sarcoma….

Histologic Diagnosis of Inflammatory Skin Diseases

Eosinophilic folliculitis

…f neutrophils. Moreover, findings of mycosis fungoides in the patch stage are present also in surface epidermis, where lymphocytes disposed as solitary units are accompanied by scant spongiosis and mounds of parakeratosis are elongated. Clue to spec…

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