Search Results for: suppuration

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A Clinical Atlas of 101 Common Skin Diseases

Deep Fungal Infections

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…

A Clinical Atlas of 101 Common Skin Diseases

Tuberculosis

An inflammatory process caused by Mycobacterium tuberculosis. In the skin, it may be primary as a consequence of direct inoculation (tuberculosis verrucosa cutis) or secondary to a focus of tuberculosis in another organ (the lung for lupus…

A Clinical Atlas of 101 Common Skin Diseases

Acne Vulgaris

A disease of infundibulosebaceous units, especially infundibula, that may manifest itself solely as noninflammatory lesions, i.e., comedones and intact cysts, or as inflammatory lesions, i.e., papules, nodules, and pustules. The process may resolve…

A Clinical Atlas of 101 Common Skin Diseases

Nodular Vasculitis

An arteritis in the subcutaneous fat manifested clinically at first by one or more red nodules that, in time, become ulcerated and heal with scars, usually on the posterior aspect of the legs of short, thick-legged women. No cause is usually found,…

A Clinical Atlas of 101 Common Skin Diseases

Pyoderma Gangrenosum

An inflammatory process that often begins as a suppurative folliculitis manifested clinically as pustules. It rapidly extends to become ulcers marked at their periphery by boggy tissue. The skin disease is associated commonly with inflammatory…

A Clinical Atlas of 101 Common Skin Diseases

Atypical Mycobacterial Infections

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…

Histologic Diagnosis of Inflammatory Skin Diseases

Atypical mycobacterial infections

…with striking pseudocarcinomatous (infundibular and eccrine ductal) proliferation of keratocytes surmounted by scale-crusts. Suppuration may be present in all three locales, namely, the subcutaneous fat, the dermis, and both epidermal and eccrine…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…nfundibulitis, such as that shown here, leads to destruction of an infundibulum and of a follicle, it being a consequence of suppuration, granulomatous inflammation, and extensive fibroplasia, the latter manifested clinically as a scar. The…

Histologic Diagnosis of Inflammatory Skin Diseases

Nodular vasculitis

…masse; foam cells, fat “microcysts,” and membranous fat necrosis present also in lobules in the subcutaneous fat Suppuration met with in foci in lobules Granulomatous inflammation distributed near loci of fat necrosis and of suppuration

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