Differential Diagnosis in Dermatopathology

Discussions

Epidermolytic hyperkeratosis and a plane wart share several findings histopathologic, among them being a papillated and thickened epidermis, hypergranulosis, and cells with pale cytoplasm within the epidermis. The terms “epidermolytic hyperker…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Verruciform Xanthoma?

“A relationship most likely exists between the verruciform appearance of the epithelium and the underlying foam cells. . . . One might suspect that epithelial breakdown, from some as yet unknown cause may secondarily elicit a foam-cell respo…

Histologic Diagnosis of Inflammatory Skin Diseases

Kimura’s disease

Kimura’s disease Synonyms Eosinophilic lymphofolliculitis Presentation stereotypical Age and sex Young men, especially Asians Distribution of lesions Head, neck, and trunk Individual lesions Firm nodules and tumors, some gigantic, above which…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Precanceroses?

“Obligate precanceroses These correspond completely to Dubreuilh’s definition of precancerosis. They show no tendency to spontaneous regression and therefore should not remain untreated. Obligate precanceroses include the following: Ker…

Dermatology Practical & Conceptual

Study By Disease

“Blue nevus” (Jadassohn-Tièche) (Quiz #360) “Blue nevus” (Jadassohn-Tièche) (Quiz #525) “Blue nevus” (Masson’s blue neuronevus) (Quiz #359) “Collagenous” nevus, papillary dermal type* (Quiz #11…

Differential Diagnosis in Dermatopathology

Discussions

Grover’s disease manifests itself as several variants histopathologic, one of which mimics pemphigus vulgaris. Both pemphigus vulgaris and Grover’s disease are characterized by suprabasal separation above which acantholytic cells are arr…

Differential Diagnosis in Dermatopathology

Discussions

Verrucous seborrheic keratosis and verrucous epidermal nevus share several findings histopathologic, among them laminate and basket-woven orthokeratosis, an epidermis thinned in some foci and thickened in others, the presence sometimes of “hor…