Search Results for: epidermis

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Histologic Diagnosis of Inflammatory Skin Diseases

Arthropod assaults

…e larva of a hookworm of creeping eruption (that latter agent, being found fortuitously and rarely) in the lower part of the epidermis, a cercaria of avian schistosomiasis, that organism being discovered by lucky chance in the midspinous layer of…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…cytes drawn to it kill keratocytes. The individual necrotic keratocytes can be seen as solitary units and in clusters in the epidermis and beneath, as shown in this lesion. 11.11.15A: Perivascular dermatosis, lichenoid + 11.11.15B: Lymphocytes,…

Histologic Diagnosis of Inflammatory Skin Diseases

Nail Units

…the epidermis of the proximal nail fold, (2) the epithelium of the nail matrix, (3) the epithelium of the nail bed, (4) the epidermis of the hyponychium, and (5) the epidermis of volar skin of the digit. The dorsal and ventral surfaces of the…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…bular epidermis. 10.11.5A: Vesicular dermatitis, “intraepidermal” + 10.11.5B: Confluent necrosis of the original epidermis beneath which a new epidermis has come into being = Burn with re-epithelialized beneath a subepidermal blister…

Histologic Diagnosis of Inflammatory Skin Diseases

Pemphigus vulgaris

…he substance of those urticarial lesions. Flaccid blisters result from acantholysis having occurred in the lower part of the epidermis, it leading to collapse of the scaffolding of the structure of normal epidermis, serum being found in abundance…

Histologic Diagnosis of Inflammatory Skin Diseases

Pattern Analysis in Historical Perspective

…e epithelial structures are devoid of blood vessels. The infundibulum is epithelial, being as it is as much a constituent of epidermis as is surface epidermis. Pustular dermatitides, therefore, can be divided rationally into those of infundibular…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Spongiform Pustular Diseases?

…hose titles refers to the appearance of a cluster of neutrophils at a particular moment in its migration through the surface epidermis or infundibular epidermis. At one moment in time a pustule can be a Munro microabscess, later a spongiform…

Histologic Diagnosis of Inflammatory Skin Diseases

Dermatofibroma

…d sharply circumscribed or keratotic and ill-defined Delled in center, i.e., an unprovoked “dimple” sign Thinned epidermis in the center; acanthotic epidermis at the periphery Prominent collarette of infundibular and eccrine ductal…

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