Search Results for: actinic squamous-cell

Histologic Diagnosis of Inflammatory Skin Diseases

Miescher’s granuloma of the face

…nular connective tissue disorder affecting sun- and heat-damaged (elastotic) skin. Arch Dermatol 1975;111:460–66. Steffen C. Actinic granuloma (O’Brien). J Cutan Pathol 1988;15:66–74. Tock CL, Cohen PR. Annular elastolytic giant cell

Histologic Diagnosis of Inflammatory Skin Diseases

Our Definition of “Inflammation” and “Inflammatory Disease”

…matory cells. Fourth, it may not be possible by conventional miscroscopy to determine whether particular cells, e.g., plasma cells, mast cells, histiocytes, and fibrocytes in a particular circumstance are inflammatory or neoplastic, e.g.,…

Histologic Diagnosis of Inflammatory Skin Diseases

Collagen

…m; and those typified by long-standing lichenoid infiltrates of lymphocytes, such as lichen planus, disseminated superficial actinic porokeratosis, and some examples of the lichenoid purpura of Gougerot and Blum (and the neoplastic process, mycosis…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…d light. 10.38.12A: Nodular dermatitis, granulomatous + 10.38.12B: 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…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Epidermal Cyst and Epidermoid Cyst?

…helium. “The commonest type of epithelial cyst of the skin 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…

Differential Diagnosis in Dermatopathology

Photoallergic dermatitis vs. Phototoxic dermatitis

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…

Differential Diagnosis in Dermatopathology

Discussions

…, the result being lichen simplex chronicus imposed on the longstanding photoallergic dermatitis. The face of a patient with actinic reticuloid often resembles that of a lion (leonine), as does that of some patients with lymphoma or leukemia and,…

Histologic Diagnosis of Inflammatory Skin Diseases

Lupus erythematosus

…certainly is lupus erythematosus. Lupus profundus, at first glance, may be confused for a lymphoma, such as a subcutaneous T-cell one. The presence of many plasma cells in lobules, of nuclear “dust” of lymphocytes, and of sclerosis that…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Atrophoderma?

…– Progeria, acrogeria – Congenital poikilodermas – Focal dermal hypoplasia Acquired skin atrophies – Actinic (senile) skin atrophy – Inanition atrophy – Traction and pressure atrophy – Anetodermas –…