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…

Differential Diagnosis in Dermatopathology

Nevus verrucosus vs. Acanthosis nigricans

A keratotic condition of the palms and soles, inherited usually, but sometimes acquired, in which involvement may be diffuse, circumscribed (including striate), or punctate….

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Churg-Strauss Granuloma and Allergic Granulomatosis?

“The occurrence of a clinical syndrome of severe asthma, fever, and hypereosinophilia, together with symptoms of vascular embarrassment in various organ systems, has been established. . . . The basic anatomical changes . . . consisted of wide…

Differential Diagnosis in Dermatopathology

Discussions

Nevus verrucosus and acanthosis nigricans are processes that affect the papillary dermis and the epidermis. Both conditions may display hyperkeratosis, epidermal hyperpigmentation, papillomatosis, melanophages, and an increased number of fibrocytes…