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A Clinical Atlas of 101 Common Skin Diseases

Atypical Mycobacterial Infections

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Infection of skin and subcutaneous tissue by atypical mycobacteria, that is, mycobacteria other than those responsible for tuberculosis and leprosy, expressed clinically as keratotic and crusted papules, plaques, nodules, and tumors that may be punctuated by draining sinuses and by ulcers.

A Clinical Atlas of 101 Common Skin Diseases

Basal-Cell Carcinoma

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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.

A Clinical Atlas of 101 Common Skin Diseases

Deep Fungal Infections

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Cutaneous and subcutaneous lesions, usually nodules, that have become keratotic, crusted, and ulcerated as a consequence of infection by a variety of deep fungi, i.e., fungi situated in the dermis and subcutis, some of which may be disseminated to other organs.

A Clinical Atlas of 101 Common Skin Diseases

Keratosis Pilaris/Lichen Spinulosus

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Keratotic spikes that emerge from dilated ostia of infundibula and are equidistant from one another.

A Clinical Atlas of 101 Common Skin Diseases

Seborrheic Keratosis, Including Solar Lentigo

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A benign neoplasm of keratinocytes that consists of pigmented macules, papules, and plaques distributed on sun-exposed sites for a solar lentigo and the reticulated type of seborrheic keratosis, which represents a later stage of solar lentigo, and on the trunk mostly for other types of seborrheic keratosis unrelated to solar lentigo.

A Clinical Atlas of 101 Common Skin Diseases

Squamous-Cell Carcinoma

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A malignant neoplasm of keratinocytes that when present as a keratotic macule or papule on skin damaged badly by sunlight is referred to as solar keratosis.

A Clinical Atlas of 101 Common Skin Diseases

Syringoma

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A benign neoplasm of apocrine ductal nature within the upper half of the dermis that manifests itself clinically as tiny, smooth, skin-colored, round or oblong papules that usually are situated in periorbital skin, but may be seen on other sites, such as the neck or genitalia, or even be widespread.

A Clinical Atlas of 101 Common Skin Diseases

Tinea Versicolor

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An inflammatory disease caused by the fungus Malassezia furfur, the organisms of which proliferate in a slightly thickened stratum corneum.

A Clinical Atlas of 101 Common Skin Diseases

Xanthomas, Including Xanthogranulomas

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Deposits of lipid in the skin and sometimes in subcutaneous tissues as a consequence often, but not always, of hyperlipidemia.

A Clinical Atlas of 101 Common Skin Diseases

Sclerodermas

A generic term for at least two different inflammatory diseases that have in common hardening of the skin by virtue of thickening of bundles of collagen in the dermis and subcutis. One of those diseases manifests itself as localized or widespread pa…

A Clinical Atlas of 101 Common Skin Diseases

Scars, Keloids, and Anetodermas

A type of fibrosing inflammation characterized clinically by lesions that at first are elevated and that do not extend beyond the exact site of injury and that in time tend to shrink, sometimes even becoming atrophic….

Therapeutic Strategies in Dermatology

Allergic Contact Dermatitis: Clinical Cases

…ch testing to different types of rubber and chemicals utilized in rubber processing; this testing is done several weeks later, and a positive reaction to mercaptobenzothiazole (a chemical accelerant used in the processing of rubber) is confirmed Cas…

Therapeutic Strategies in Dermatology

Allergic Contact Dermatitis: Initial Evaluation

Initial Evaluation The presentation of allergic contact dermatitis may range from mild edema, erythema, or eczematous papules and plaques, to bright erythema with vesicles, bullae, and crusting; less e…

Therapeutic Strategies in Dermatology

Melanoma: Treatment

…is highly recommended when possible. The pathology report must include the excision margins, the tumor thickness, the Clark’s level, presence of ulceration, mitotic index, the presence of regression, growth phase (horizontal and/or vertical), l…

Therapeutic Strategies in Dermatology

Spider Bites: Key Points

…; Bites may cause severe dermonecrotic reaction and may result in prolonged headaches Tarantula (Theraphosidae family) Coarse hairs No known toxin   Hairs are ejected from the spider as part of their defense reaction. This may result in a gran…

Therapeutic Strategies in Dermatology

Angular Cheilitis: Treatment

…ed b.i.d. to t.i.d. The iodoquinol has antimicrobial activity. In the elderly, edentulous patient, redundant folded skin at the comers of the mouth may predispose to perl├Ęche and may need to be corrected for the perl├Ęche to clear. Collagen injections…

Histologic Diagnosis of Inflammatory Skin Diseases

Collagen

…KDa and accounts for approximately 80% of the total amount of collagen in the dermis. Type I collagen is arranged in a dense orthogonal meshwork of bundles in the reticular dermis. Type III collagen makes up approximately 10% of dermal collagen, it…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Radial Growth Phase versus Vertical Growth Phase of Melanoma?

“The essence of the radial growth phase is the incapacity to form tumor nodules in the dermis. Thus the radial growth phase may also be called nontumorigenic. . . . The vertical growth phase is, by definition, the appearance of a population o…

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