Search Results for: squamous-cell carcinoma

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Spongiform Pustular Diseases?

…ave migrated into the soaked epidermis, destroying epithelial cells by invading them or going between them.” Kogoj F. Die spungiforme (schwammartige) Pustel. Dermatol Wochnschr 1938;107:1485-87. “Of all the listed features, only the spong…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Mucha-Habermann Disease a Lymphocytic Vasculitis?

…the vessel walls by lymphocytes. In addition, the endothelial cells are swollen, narrowing the lumen of the affected vessels.” Szymanski FJ. Pityriasis lichenoides et varioliformis acuta. Arch Dermatol 1959;79:7–16. “Pityriasis lich…

Differential Diagnosis in Dermatopathology

Discussions

…ceous hyperplasia may be misinterpreted clinically as a basal-cell carcinoma because both conditions have a slightly elevated border and a central dell. In basal-cell carcinoma, however, the depression in the center usually represents an erosion or u…

Differential Diagnosis in Dermatopathology

Discussions

…hologic develop in them. Those range from formation of “squamous eddies” to development of nuclear abnormalities that may simulate vaguely the kind seen in squamouscell carcinoma. Of the three major patterns of seborrheic keratoses, name…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Parapsoriasis?

…rmatological types, characterized by nonpruriginous erythmato-squamous spots, extremely persistent and rebellious to all treatment. It is exclusively the objective appearance of these dermatoses which led to their mutual approximation to psoriasis. T…

Histologic Diagnosis of Inflammatory Skin Diseases

Sebaceous Units

…ebaceous gland marks the site where lipid-producing glandular cells of sebaceous lobules meet stratified squamous epithelium of an infundibulum. A sebaceous duct is lined by a thin cornifying squamous epithelium with a barely detectable granular zone…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Keratosis Lichenoides Chronica?

…e perivascular and periadnexal infiltrate with numerous giant cells in the “subpapillary portion of the corium.” The infiltrate also was situated in dermal papillae, around eccrine glands, and in adipose tissue. The extensions of follicul…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…2B: A band of histiocytes, some of them multinucleate, around squamous epithelium that, in turn, surrounds cellulose = Foreign body reaction to a splinter The splinter came to be surrounded by squamous epithelium by virtue of epidermis, either surfac…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Epidermal Cyst and Epidermoid Cyst?

…n is the epidermal cyst which is lined entirely by stratified squamous epithelium usually without skin appendages. . . . These cysts may arise from hair follicles, sebaceous ducts, and from the epidermis, and it is usually impossible to determine the…