Search Results for: actinic squamous-cell

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Spongiform Pustular Diseases?

…y he thought that is baffling. In a spongiform pustule, neutrophils in variable number are sprinkled among keratocytes whose cell membranes form a lattice. Depending on the stage in migration of neutrophils from the dermis through the epidermis, a…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Mucha-Habermann Disease a Lymphocytic Vasculitis?

…racterized by the presence of fibrin in the wall and/or thrombi in the lumen in the context of an infiltrate of inflammatory cells. In the vast majority of instances, the cells are neutrophils, e.g., in leukocytoclastic vasculitis, septic…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen sclerosus et atrophicus

…long with Bowen’s disease and erythroplasia of Queyrat and granuloma faciale and erythema elevatum diutinum. Rarely, a squamouscell carcinoma develops in a lesion of lichen sclerosus et atrophicus, and the site for that usually is the…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Radial Growth Phase versus Vertical Growth Phase of Melanoma?

…”), that being a sign for the fraternity of “vertical growth phase,” or where a solar keratosis ends and a squamouscell carcinoma begins; solar keratosis is a superficial squamouscell carcinoma. These exercises not only are…

Differential Diagnosis in Dermatopathology

Seborrheic keratosis, acanthotic type vs. Eccrine poroma

An inflammatory, i.e., granulomatous, process that usually takes the form of papules which in constellation often assume annular, arcuate, and serpiginous shapes. Many variants exist, among them widespread papules, papules in photodistribution,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Lentigo?

…ic macule (labial lentigo) are similar to solar lentigo, according to one study, showing melanocytic hyperplasia but without cellular atypia.” Rhodes AR. Neoplasms: benign neoplasias, hyperplasias, and dysplasias of melanocytes. In:…

Strategies for early recognition of cutaneous melanoma-present and future

Strategies for early recognition of cutaneous melanoma-present and future

…dermis or within the basal layer of non-edged papillae. The four minor criteria were represented by the presence of roundish cells in superficial layers spreading upward in a pagetoid fashion, pagetoid cells widespread throughout the lesion,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Keratosis Lichenoides Chronica?

…at despite the unity of the two diseases, there were some differences between them histopathologically, namely, inflammatory cells around follicles and irregular epidermal growth in the former, and inflammatory cells only in dermal papillae with…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Parapsoriasis?

…ermatosis, which has also been called fingerprint parapsoriasis or digitate parapsoriasis.” Gibson LE, Perry HO. Papulosquamous eruptions and exfoliative dermatitis. In: Moschella SL, Hurley HJ, eds. Dermatology, 3rd ed. Philadelphia: W. B….