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Differential Diagnosis in Dermatopathology

Images

Dermatofibroma, hemorrhagic papulo-nodule Kaposi’s sarcoma, hemorrhagic papulo-nodule

Histologic Diagnosis of Inflammatory Skin Diseases

Foreign body reaction

…ns Localized usually Individual lesions Papules, plaques, and nodules Course Longstanding Variations clinical Rupture of an infundibular cyst produces a foreign body reaction that is the most common in the skin. Bovine collagen injected in the sk…

Histologic Diagnosis of Inflammatory Skin Diseases

“Kyrle’s disease”

…cratching and rubbing, and that ends as “picker’s nodule” or “prurigo nodularis.” Ours, of course, is speculation. In fact, though, there is no need ever to invoke a diagnosis of Kyrle’s disease; another diagnosis…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Pustular Dermatitis

…tule (suppurative infundibulitis) or as an inflamed papule or nodule (suppuration secondary to rupture of an infundibular cyst) (Fig. 5.315 A&B). Not every suppurative infundibulitis progresses invariably to granulomatous and fibrosing peri-infun…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Endothelial Swelling?

…pe. The same can be said for the potential for progression; a nodule, for example, of abnormal melanocytes, cannot be judged through a microscope to be “expansile!” Endothelial cells, like all types of cells, can be described morphologica…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Inverted Follicular Keratosis, Tricholemmoma, and Desmoplastic Tricholemmoma?

…dy. These lesions are characterized clinically by a papule or nodule, practically always single and usually projecting from the surface. The character of the cells comprising the central cellular mass ranges from what is natural for a cell immediatel…

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