Histologic Diagnosis of Inflammatory Skin Diseases

Lymphocytoma cutis

…Simulators of B-cell lymphoma Fully developed Nodular and/or diffuse infiltrate made up mostly of small lymphocytes in the reticular dermis and, sometimes, in the upper part of the subcutaneous fat Infiltrate usually denser in the upper part (&#8220…

Dermatology Practical & Conceptual

Nodules on the right ear

…t: ©2011 Talhari et al.] Histopathologic examination showed a diffuse granulomatous infiltrate involving the entire dermis, constituted by histiocytes and multinucleated giant cells (Figures 2, 3). The histiocyte’s cytoplasm contained rounded y…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema elevatum diutinum

…ermis mostly spared Fully developed Nodular and, sometimes, diffuse infiltrate of neutrophils, nuclear “dust” of neutrophils, eosinophils, lymphocytes, plasma cells, and some histiocytes throughout part or all of the dermis and, sometim…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Verruciform Xanthoma?

…f the epithelial and nonepithelial elements, particularly the diffuse infiltrate of foam cells that reside just beneath a thickened epithelium, are not understood. Suppositions include a response to injury of some type, such as an infection by papill…

Histologic Diagnosis of Inflammatory Skin Diseases

Nephrogenic fibrosing dermopathy

…Pink to brown papules, plaques, and nodules that eventuate in diffuse thickening of the skin with a peau d”orange appearance; joint contractures rarely Course Protracted, usually worsening progressively; rarely resolves and then only in part Va…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Keratosis Lichenoides Chronica?

…golis et al. in 1972. In 1886 Kaposi showed a photograph of a diffuse eruption characterized by papules, nodules, and keloid-like streaks disposed symmetrically in vertical rows parallel to the long axis of the neck and of the extremities. The linear…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…at are induced by prolonged administration of corticosteroids systemically or by application topically. CRUST [L. crusta (crust)]: A collection of serum that contains white blood cells, red blood cells, or both (Fig. 3.12). The honey-colored crusts o…

Dermatology Practical & Conceptual

Blue nevus with a starburst pattern on dermoscopy

…ical examination revealed spindle cells with melanin pigments diffusely present in the upper dermis and around hair follicles in the mid-dermis, but not in the epidermis. The melanocytic cells were arranged in a symmetrical wedge-shaped configuration…

Histologic Diagnosis of Inflammatory Skin Diseases

Rheumatoid neutrophilic dermatitis

…ome lesions. Findings histopathologic Fully developed Dense diffuse infiltrate of neutrophils mostly, often denser in the upper part of the dermis Lymphocytes, plasma cells, histiocytes, some of them multinucleate, and eosinophils sometimes scatter…

Dermatology Practical & Conceptual

Incidental Merkel cell carcinoma in a cutaneous horn: a case report

…in cells believed to function in mechano-reception and/or the neuroendocrine system. Merkel cell carcinoma (MCC), is a rare cutaneous malignancy first described in 1972 by Toker [1]. Also known as primary neuroendocrine carcinoma of skin, this aggres…