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A Clinical Atlas of 101 Common Skin Diseases

Dermatofibroma

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An inflammatory process that develops secondary to trauma, usually in the form of a penetrating injury or rupture of a follicle, and that proceeds through stages of granulation tissue with numerous extravasated erythrocytes, granulomatous inflammation, and fibrosis.

A Clinical Atlas of 101 Common Skin Diseases

Dermatofibrosarcoma Protuberans

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A malignant nonepithelial neoplasm (a sarcoma) presumably of perineural fibrocytes that presents itself usually on the trunk, but sometimes elsewhere, such as the extremities, face, and scalp.

A Clinical Atlas of 101 Common Skin Diseases

Erythema Annulare Centrifugum

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An inflammatory disease characterized by lesions with arcuate, annular, and serpiginous outlines and by collarettes of scale on the inner margin of lesions that extend outward in centrifugal fashion, disappearing in months as a rule in the absence of treatment.

A Clinical Atlas of 101 Common Skin Diseases

Erythema Multiforme

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An inflammatory process that tends to involve mucous membranes, as well as skin, and of the latter the acra especially.

A Clinical Atlas of 101 Common Skin Diseases

Erythema Nodosum

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An inflammatory process, i.e., a panniculitis, marked by tender erythematous plaques, nodules, or tumors (or combinations thereof) that usually affect the anterior aspect of the legs and, less often, the arms, and induced by processes, in an organ other than the skin, as dissimilar as sarcoidosis, Crohn’s disease, and histoplasmosis.

A Clinical Atlas of 101 Common Skin Diseases

Lupus Erythematosus

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An inflammatory process that expresses itself in the skin in protean ways that are variations on a basic pathologic theme, and includes evanescent patches on the face (“butterfly blush”), scaly papules and plaques that resolve with atrophy and hyperpigmentation (classic discoid lupus erythematosus), arcuate, annular, and serpiginous lesions (subacute cutaneous lupus erythematosus), nonscaling plaques (tumid lupus erythematosus), subcutaneous nodules (lupus profundus), and blisters (bullous lupus erythematosus).

A Clinical Atlas of 101 Common Skin Diseases

Neurofibromatosis

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A constellation of lesions that represent disorders of melanocytes (e.g., axillary "freckles" and café au lait "spots") and of proliferations of Schwann cells (e.g., papules, nodules, and tumors of neurofibroma).

A Clinical Atlas of 101 Common Skin Diseases

Pruritic Urticarial Papules and Plaques of Pregnancy

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An inflammatory process in pregnant women near term that consists of urticarial papules and plaques, especially on the trunk and particularly in association with lesions of striae atrophicantes, the lesions disappearing shortly after parturition.

A Clinical Atlas of 101 Common Skin Diseases

Viral Exanthems

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An inflammatory process manifested by a transient, usually widespread eruption, made up typically of macules and papules, and episodically of vesicles and pustules.

Therapeutic Strategies in Dermatology

Candidiasis: Key Points

…Introduction Candida albicans is a normal commensal organism of the gastrointestinal and genitourinary tracts. It causes cutaneous disease in occluded, moist areas of skin and mucosa: the groin (inguinal folds, vulva, or perianal areas), axilla, in…

Therapeutic Strategies in Dermatology

Oral Hairy Leukoplakia: Key Points

…virus (EBV), and usually presents as corrugated white plaques of the lateral tongue. OHL is a clinical manifestation of immunosuppression and classically presents in the setting of HIV infection. OHL is a chronic condition that is managed over time…

A Clinical Atlas of 101 Common Skin Diseases

Acanthosis Nigricans

Pigmented plaques formed by confluence of smooth-surfaced soft papules, some of which may become polypoid, traversed by accentuations of skin folds. This disease has a predilection for intertriginous regions. The condition may develop consequent to…

A Clinical Atlas of 101 Common Skin Diseases

Squamous-Cell Carcinoma

…osis and radiation keratosis, are euphemisms for various types of superficial squamous-cell carcinoma. Very episodically, neoplastic cells of those types of squamous-cell carcinoma proliferate wildly, and the primary neoplasm then consists of aggrega…

A Clinical Atlas of 101 Common Skin Diseases

Melanocytic Nevi and Melanotic Macules

…and benign neoplasms (“acquired” melanocytic nevi) of various specific types, all of which are composed of abnormal melanocytes and manifested clinically as lesions of different colors, shapes, and sizes, among them, macules and patches,…

A Clinical Atlas of 101 Common Skin Diseases

Histiocytosis X

…Langerhans’ cells that may affect internal organs, e.g., the spleen, liver, and bone, sometimes with fatal outcome, as well as the skin, where lesions usually manifest themselves as purpuric papules or ulcers that may be localized (to the vulva

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Verruciform Xanthoma?

…findings histopathologic of verruciform xanthoma. According to the authors, the simulator displayed also changes of verruciform xanthoma but showed certain histopathologic differences: less marked parakeratosis, minimal papillomatosis, a granular lay…

Dermatology Practical & Conceptual

Saved by step sections: an unusual presentation of basal cell carcinoma

…nger than 50 years old, was 5% in one Brazilian study [4], and these were mainly in regions exposed to sunlight. Although several cases of basal cell carcinoma in the vulva can be found in the literature [5-8], only one case reported it to occur in t…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Pseudomalignancies?

…he latter. Therefore, pseudocanceroses are also precanceroses. The histological substrate is that of pseudocarcinomatous epithelial hyperplasia with inflammation. The following diseases are so-called pseudocanceroses: Papillomatosis cutis carcinoides…

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