Search Results for: scale-crust

Histologic Diagnosis of Inflammatory Skin Diseases

Subcutaneous Fat: Panniculitis

…he subcutaneous fat, like that in the dermis, is typical of a response to an assault by an arthropod. The erosion covered by crust represents the actual site of the “bite.” Figure 5.393 A&B. Granuloma annulare: dermal only. Granuloma…

Epidermal multinucleated giant cells are not always a histopathologic clue to a herpes virus infection: multinucleated epithelial giant cells in the epidermis of lesional skin biopsies from patients with acantholytic dermatoses can histologically mimic a herpes virus infection

Epidermal multinucleated giant cells are not always a histopathologic clue to a herpes virus infection: multinucleated epithelial giant cells in the epidermis of lesional skin biopsies from patients with acantholytic dermatoses can histologically mimic a herpes virus infection

…pecimen that showed features consistent with a herpes virus infection. (A) Basophilic debris is seen within the inflammatory scale crust overlying necrosis and ulceration of the epidermis. (B) There is a suprabasilar cleft showing an intraepidermal…

Histologic Diagnosis of Inflammatory Skin Diseases

Cat-scratch disease

…inical Bacterial “folliculitis” is infundibulocentric. Deep fungal infection is characterized often by prominent scalecrust. Findings histopathologic Fully developed Zone of necrosis and fibrin in the upper part of the reticular dermis…

Histologic Diagnosis of Inflammatory Skin Diseases

Selection of the Site

…cle of pityriasis lichenoides et varioliformis acuta will reveal findings different from those of erythema multiforme, e.g., scalecrust that houses neutrophils, a zone of epidermal necrosis that often has assumed a wedge shape, a lichenoid…

Histologic Diagnosis of Inflammatory Skin Diseases

Sarcoidosis

…of sarcoidosis is firm grouped papules and nodules that usually exhibit no signs of alteration of surface epidermis, such as scale or crust. Cutaneous sarcoidosis, however, comes in various visages clinical, e.g., ichthyosiform patches and plaques,…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…Infiltrate of inflammatory cells not wedge-shaped 3. No mounds of parakeratosis usually 3. Mounds of parakeratosis often 4. Crust above site of spongiosis or spongiotic vesiculation sometimes 4. No crust 5. Single focus of spongiosis often at the…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…eic dermatitis, not only because the biopsy specimen did not come from the face or chest, but because there are no mounds of scalecrust at lips of the infundibular ostium. A subtle “plug” of corneocytes is present in the infundibular…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Chondrodermatitis Nodularis Helicis?

…chondrodermatitis nodularis helicis, consist of papules or nodules, and they tend to become eroded, ulcerated, fissured, and crusted, also as a result of the external trauma. As might be expected, the constellation of papular and nodular lesions…

Histologic Diagnosis of Inflammatory Skin Diseases

Phaeohyphomycosis

…are formed of suppuration joined by granulomatous inflammation that, in time, is followed by fibrosis. Epidermal changes of scalecrust result from parakeratosis accompanied by plasma and neutrophils. Dematiaceous (black) fungi may be present as…