Search Results for: epidermis

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Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Subcorneal Pustular Dermatosis?

…neutrophils from capillaries in the papillary dermis into the epidermis. Those neutrophils traverse dermal papillae, the dermoepidermal junction, and, eventually, the full thickness of the epidermis. When clusters of neutrophils assemble in the spino…

Histologic Diagnosis of Inflammatory Skin Diseases

Persistent pigmented purpuric dermatitis

…; dermoepidermal junction often spared by the infiltrate, but epidermis sometimes peppered by lymphocytes Erythrocytes extravasated in the papillary dermis Siderophages in the papillary dermis and, sometimes, in the upper part of the reticular dermis…

Histologic Diagnosis of Inflammatory Skin Diseases

Fox-Fordyce disease

…nfundibula by orthokeratotic cells Acanthosis of infundibular epidermis Spongiosis of infundibular epidermis, including spongiotic vesiculate. Cornoid lamellation in infundibula sometimes Ballooning and vacuolar alteration, and individual dyskeratoti…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Discoid Lupus Erythematosus Versus Systemic Lupus Erythematosus?* I

…d sometimes along the dermoepidermal junction and even in the epidermis. Mucin may be increased in quantity in the reticular dermis. In time, classic discoid lupus erythematosus consists of a superficial and deep perivascular infiltrate of lymphocyte…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Dermal and Epidermal Types of Erythema Multiforme?

…f those blisters tends to become gray as a consequence of the epidermis having undergone necrosis. In his atlas of dermatopathology published in the 1950s, Achilles Civatte pictured erythema multiforme histopathologically as a lesion with an epidermi…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Vasculitis

…aepidermal blister having exploded. All of the changes in the epidermis are secondary to infarction consequent to the effects of changes in the wall of venules, to wit, deposits of fibrin in it. Figure 5.232 A&B. An ulcer covered by crust in leuk…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…nction, slight spongiosis, and necrotic keratocytes in a thin epidermis = Graft-versus-host disease Sometimes it is difficult to differentiate graft-versus-host disease from erythema multiforme on grounds histopathologic alone, but the distinction ca…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Lentigo?

…irely different proliferations of melanocytes confined to the epidermis (and to the uppermost part of epithelial structures of the adnexa). One of those conditions consists of a slight increase in the number of monomorphic melanocytes disposed as sol…

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