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Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 10.20.1A: Nodular dermatitis, granulomatous + 10.20.1B: Numerous extravasated erythrocytes, siderophages, and fibrocytes = Dermatofibroma An important finding for diagnosis of a dermatofibroma such as this one is seen at the periph…

Histologic Diagnosis of Inflammatory Skin Diseases

Gout

Gout Presentation stereotypical Age and sex Predominantly men Distribution of lesions Localized to ears and small joints, such as those of big toes Arrangement of lesions Discrete Individual lesions Papules, nodules, and even tumors Course Protracte…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

-oid?

“-oid (-oid) [eides, like]. A suffix signifying likeness or resemblance.” Bould G. The Practitioner’s Medical Dictionary. 3rd ed. Philadelphia, PA: P. Blakiston’s Son & Co., 1916:622. “-ode, -odes, -oid, -oides […

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eczema?

“Eczema is that which looks like eczema.” Hebra F. Kaposi M. Lehrbuch der Hautkrankheiten. Bd, 2. Aufl. Erlangen: Enke, 1874:403-93. “In Anglo-American usage, the term dermatitis is being used increasingly for all these conditi…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Nodular and Diffuse Dermatitis

See Fig. 5.174 A&B. Figure 5.174 A&B. Nodular dermatitis and diffuse dermatitis. Nodular dermatitis is distinguished from perivascular dermatitis (see Fig. 5.16 A&B) by the density of the infiltrate of inflammatory cells. In the periv…

Dermatology Practical & Conceptual

Nodules on the right ear

Case report A healthy 17-year-old boy with a one-year history of asymptomatic, slowly enlarging nodules affecting his right ear was seen. The patient’s past medical history was unremarkable, he was not immunosuppressed, he was not taking any d…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Epidermal Cyst and Epidermoid Cyst?

…at develops most commonly on the scalp, is lined by epithelium like that of the isthmus of a follicle and like that of an involuting follicle well advanced in catagen (exhibiting a basal layer, a pale spinous layer in which “spines” are s…

Histologic Diagnosis of Inflammatory Skin Diseases

Nephrogenic fibrosing dermopathy

Nephrogenic fibrosing dermopathy Presentation stereotypical Age and Sex Adults of either sex, rarely children Distribution of lesions Extremities, particularly legs and feet, less often trunk and buttocks Arrangement of lesions Confluence to plaques…

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