Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Spongiform Pustular Diseases?

“The pustule I have designated spongiform (spongelike) was markedly and impressively seen in acrodermatitis continua of Hallopeau. It is composed of leukocytes that have migrated into the soaked epidermis, destroying epithelial cells by inva…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Vesicular Dermatitis

See Fig. 5.239 A-C. Figure 5.239 A-C. Patterns of vesiculation: intraepidermal, subepidermal, and intra- and subepidermal. “Blister” and “vesiculobullous” are terms generic for lesions of the skin that usually are elevated…

Histologic Diagnosis of Inflammatory Skin Diseases

Psoriasis

…at their summit is a clue to guttate (eruptive) psoriasis and dermatophytosis. Neutrophils scattered among compressed keratocytes at the periphery of a tense intraepidermal vesicle on a palm or sole is a clue to pustular psoriasis or dermatophytosis

Histologic Diagnosis of Inflammatory Skin Diseases

Study By Disease

…brosarcoma protuberans (Quiz #885) Dermatomyositis (Quiz #252) Dermatophytosis (Quiz #119) Dermatophytosis (Quiz #701) Dermatophytosis, pustular (Quiz #178) Desmoplastic trichoepithelioma (Quiz #296) Diffuse large B-cell lymphoma (Quiz #387) Diffuse…

Histologic Diagnosis of Inflammatory Skin Diseases

Tinea nigra

Tinea nigra Synonyms Tinea nigra palmaris Keratomycosis nigricans palmaris Pityriasis nigra Carate noir Montoyola nigra Presentation stereotypical Age and sex Young persons especially and of both sexes Distribution of lesions Volar skin, a palm most…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Anagen Effluvium?

“The follicle tends to respond in an all or none fashion with the notable exception of its response to cancer chemotherapy agents. This is the only known instance in which hair is lost follicles which continue in their growing phase without b…

Histologic Diagnosis of Inflammatory Skin Diseases

Mycosis fungoides

Mycosis fungoides Synonyms Cutaneous T-cell lymphoma Presentation stereotypical Age and Sex Adults usually, although children may be affected. Males preponderant. Distribution of lesions Often widespread, but sometimes localized to a single patch or…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Id Reactions?

“Tuberculides—Since my suggestion in 1896 a number of apparently very dissimilar dermatoses have been grouped under this heading, whose relations with tuberculosis are proved by the following features. . . . The tuberculides themselves…