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

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…

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…

Differential Diagnosis in Dermatopathology

Seborrheic keratosis, acanthotic type vs. Eccrine poroma

…f atrophy, e.g., in a congenital expression that takes the form of a plaque (Mibelli), in a congenital manifestation in which lesions are in linear array (segmental), in an acquired type induced by ultraviolet light (disseminated superficial…

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….

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…f porokeratosis are taller and broader than those in acquired lesions of porokeratosis, such as the disseminated superficial actinic type. They are cornoid lamellae, nonetheless, because the columns of parakeratosis appear to descend through a…