Histologic Diagnosis of Inflammatory Skin Diseases

Deep fungal infections

Deep fungal infections Synonyms Mycetoma Subcutaneous mycoses Dermal mycoses Presentation stereotypical Age and sex Any age, both sexes Distribution of lesions Localized or widespread; some infections favor exposed sites; internal organs sometimes…

Differential Diagnosis in Dermatopathology

Discussions

…natus faciei, and acnitis were wrongly presumed to be forms of tuberculosis. Today, those conditions are recognized to be variants of rosacea and to be unrelated to tuberculosis. The mechanisms that lead to development of acne vulgaris, although not…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Keratosis Lichenoides Chronica?

“So we have to start once more [in regard to what is the authentic nature of lichen rubra moniliformia], returning to the old case of Kaposi by which the question began in 1886.” Pinkus H. Lichen ruber moniliformis Kaposi. Arch Dermato…

Differential Diagnosis in Dermatopathology

Acne vulgaris, erythematous papule vs. Rosacea, erythematous papule

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 punc…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Focus of Infection?

“. . . we are justified in arranging, provisionally at least, the dermatoses possibly due to focal infection in six groups, as follows: Group 1: Those considered in some relation with arthropathy:            1, erythema nodosum; 2, erythema…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Wegener’s Granulomatosis?

“Inside the nose besides extensive necrosis, there is a cell-rich granulomatous tissue with granulomatous epithelioid cell foci which surround the vessels. . . . In both lungs: infarct-like necrosis in which one finds severe changes in the ve…

Histologic Diagnosis of Inflammatory Skin Diseases

Leishmaniasis

Leishmaniasis Synonyms Leishmaniosis Presentation stereotypical Age and sex Young adults of both sexes Distribution of lesions Localized in Oriental sore, widespread in the mucocutaneous and post-kala-azar types, and disseminated in the anergic cuta…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 10.71.1A: Vasculitis, large-vessel, and panniculitis, lobular mostly + 10.71.1B: Suppurative arteritis = Nodular vasculitis, early  The only condition characterized by suppurative arteritis and extensive panniculitis is nodular vas…