Search Results for: actinic squamous-cell

An atypical pigmented lesion on the nose

An atypical pigmented lesion on the nose

…thelial cells in the dermis (Figure 3), severe solar eosinophilic elastosis, squamous eddy, atypical and necrotic epithelial squamous cells and pigmented deposits of melanin (Figure 4). Figure 3. Aggregations of atypical epithelial cells in the…

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…

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…

Differential Diagnosis in Dermatopathology

Seborrheic keratosis, acanthotic type vs. Eccrine poroma

A malignant neoplasm made up of abnormal germinative cells analogous to those that compose the folliculosebaceous-apocrine germ in an embryo and that usually manifests clinically as a papule or nodule which may become ulcerated. On the basis of…

Dermoscopic findings in an early malignant fibrous histiocytoma on the face

Dermoscopic findings in an early malignant fibrous histiocytoma on the face

…sence of erythema and a shiny white-red structureless area along with short white streaks and rosettes primarily suggested a squamous tumor and less likely a basal cell carcinoma. The findings were not specific for melanocytic lesion or…

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

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….