Histologic Diagnosis of Inflammatory Skin Diseases

Lupus vulgaris

Lupus vulgaris Findings histopathologic Fully developed Collections of epithelioid histiocytes in the upper half of the dermis, some impinging on the epidermis, which is thinned Dense infiltrates of lymphocytes surrounding granulomas Fibrosis and t…

Histologic Diagnosis of Inflammatory Skin Diseases

Atypical mycobacterial infections

Atypical mycobacterial infections Presentation stereotypical Age and sex Any age, but more often in young adults, particularly men and those who are immunocompromised Distribution of lesions Localized to a circumscribed site, that being the one of i…

Histologic Diagnosis of Inflammatory Skin Diseases

Rosacea

Rosacea Synonyms Gutta rosea Presentation stereotypical Age and sex Young and middle-aged adults, usually Caucasian women Distribution of lesions Center of the face in vertical and horizontal directions, i.e., nose, forehead, cheeks, and chin Indivi…

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…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Atrophoderma?

“Atrophoderma, or atrophia cutis. Atrophy of the skin may be quantitative or qualitative; idiopathic or symptomatic; diffused or circumscribed. Crocker gives this useful table: Pigmentosum Juvenilis Albidum Diffusum Senilis…

Dermatology Practical & Conceptual

Enlarging plaque on the face with enlarged supraorbital nerve

Case report A 38-year-old Nigerian man, who had been living in Italy since 2008, presented with an annular lesion on the right temporal and frontal region that appeared two months prior to his visit. He reported a slow centrifugal enlargement of the…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Anagen Effluvium?

“The follicle tends to respond in an all or none fashion with the notable exception of its response to cancer chemotherapy agents. This is the only known instance in which hair is lost follicles which continue in their growing phase without b…