Search Results for: keloids

Histologic Diagnosis of Inflammatory Skin Diseases

Elastic Fibers

…cross the dermis on journeys marked by curves continuously. Elastic fibers are absent from scarring processes such as scars, keloids, and dermatofibromas and are decreased greatly, or are absent altogether, in anetodermas, a feature that accounts in…

Histologic Diagnosis of Inflammatory Skin Diseases

Collagen

…ected finding in some kinds of inflammatory diseases of the skin, e.g., those that occur secondary to trauma, such as scars, keloids, and dermatofibromas; those marked by extensive suppuration and subsequent degeneration of collagen, such as…

Histologic Diagnosis of Inflammatory Skin Diseases

Cells That Mediate Inflammation (Inflammatory Cells)

…non regulated precisely, the extracellular matrix created by fibrocytes being designed to act as negative feedback in proliferation of fibrocytes. Repair of wounds usually is an orderly process, but in some fibrosing dermatitides, such as keloids,…

Histologic Diagnosis of Inflammatory Skin Diseases

Drug eruptions

…ogenic granuloma-like lesions that develop very uncommonly in patients receiving retinoids systemically. Dermatofibromas and keloids are not brought into being by drugs. Panniculitis Erythema nodosum is induced not uncommonly by a drug, but that is…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Erythema Dyschromicum Perstans?

…alteration with regard to identification of cause based on changes histopathologic is not unique. It is true also for scars, keloids, and dermatofibromas, all of which are fibrosing inflammatory processes that examination by conventional microscopy…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Hyalin?

…he Skin with Clinical Correlations, 3rd ed. Philadelphia: Elsevier Mosby, 2005:1270. “The histological appearances [of keloids] are typified by a nodular fibroblastic proliferation and the presence of hypocellular, ‘glassy’,…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ollagen in haphazard array, and abundant mucin in interstices between collagen bundles = Scar, early As lesions of scars and keloids evolve, fibrocytes not only manufacture collagen, but mucin, seen as granular basophilic material in a section…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Fibromatoses?

…nd recur when removed, but they do not metastasize. The term should not be applied to reactive fibrous proliferations, or to keloids, which are usually secondary to injury . . .” Burton JL. Disorders of connective tissue. In: Champion RH,…