Search Results for: keratocyte

Histologic Diagnosis of Inflammatory Skin Diseases

Dermatomyositis

…ased slightly in the reticular dermis Venules of the superficial plexus dilated Epidermis slightly thinned focally Nuclei of keratocytes of thinned epidermis sometimes pleomorphic Cornified layer in normal basket-weave configuration Fully developed…

Histologic Diagnosis of Inflammatory Skin Diseases

Melanocytes

…lt from differences in the number, size, degree of melanization, distribution, and rate of degradation of melanosomes within keratocytes. In dark-skinned peoples, melanosomes within keratocytes are numerous, large, melanized markedly, distributed as…

Histologic Diagnosis of Inflammatory Skin Diseases

Cells That Mediate Inflammation (Inflammatory Cells)

…MHC class II molecules in response to release by activated lymphocytes of IFN-gamma, an indication that, in a generic sense, keratocytes, like endothelial cell, could be considered inflammatory cells. There even is evidence that keratocytes are able…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…ditions such as warty dyskeratoma. In all instances, dyskeratosis is an expression of unexpectedly early, but slow, death of keratocytes. In contrast, those keratocytes that die rapidly have no time to cornify, a fact made manifest by the presence…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…In a photoallergic dermatitis, the infiltrate of lymphocytes tends to be deep as well as superficial. An occasional necrotic keratocyte may be spotted in the epidermis. 10.2.6A: Perivascular dermatitis, spongiotic psoriasiform + 10.2.6B: Lymphocytes…

Histologic Diagnosis of Inflammatory Skin Diseases

Dermoepithelial Interface

…has been divided, by convention, into four zones: (1) the cytoskeleton, that is, hemidesmosomes and plasma membrane of basal keratocytes that constitute the upper boundary of the interface; (2) the lamina lucida, an electron-lucent region that lies…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…acute That this lesion is recent in onset may be inferred from the presence of an entirely normal cornified layer, ballooned keratocytes, many individual necrotic keratocytes, and numerous erythrocytes extravasated in the papillary dermis and the…