Search Results for: panniculitis

Histologic Diagnosis of Inflammatory Skin Diseases

Subcutaneous T-cell lymphoma

…ixed-cell infiltrate throughout fat lobules, associated findings being erythrophagocytosis and karyophagocytosis. Cytophagic panniculitis is no more a panniculitis than is mycosis fungoides or leukemia that happens to involve fat lobules…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…s the case here, the patient may be either neurotic or psychotic. When the face becomes the object of factitious dermatitis, panniculitis, or fasciitis, almost always the patient is psychotic. 10.38.27A: Panniculitis, septal and lobular + 10.38.27B:…

Histologic Diagnosis of Inflammatory Skin Diseases

Behçet’s Disease

…hat are perivascular mostly. Differential diagnosis histopathologic Erythema nodosum is a granulomatous and fibrosing septal panniculitis, in contrast to the panniculitis of Behçet’s disease which, although septal mostly, is not granulomatous….

Histologic Diagnosis of Inflammatory Skin Diseases

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…lobular + 10.35.2B: Foreign bodies (talc) in collections of neutrophils disposed in broad bands in fat lobules = Factitious panniculitis The clue to factitious panniculitis is apparent at scanning magnification, namely, a pattern of panniculitis

Histologic Diagnosis of Inflammatory Skin Diseases

Errors and Reasons

…polyarteritis nodosa. In short, the changes are those of one pattern histopathologic of different causes. Error: Cytophagic panniculitis is a panniculitis. Reason: The so-called panniculitis is a T-cell lymphoma seated in the subcutaneous fat….

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…trabecula are widened markedly by the effects of granulomatous and fibrosing inflammation characteristic of that distinctive panniculitis. 10.33.8A: Panniculitis, septal and lobular + 10.33.8B: Histiocytes, some of them multinucleate, in company…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ular vasculitis, earlyUnlike the situation in periarteritis nodosa in which the arteritis overshadows what usually is meager panniculitis, in nodular vasculitis the arteritis is accompanied by formidable panniculitis. This example can be told to be…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…or biologic; the impressive nuclear abnormality of histiocytes is a feature of a granulomatous and fibrosing dermatitis (and panniculitis). 10.20.10A: Diffuse dermatitis, granulomatous, and panniculitis, septal and lobular + 10.20.10B: Predominance…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…dermis sometimes is spared in necrobiosis lipoidica, as shown here. 10.67.2A: Perivascular and interstitial dermatitis, and panniculitis, septal + 10.67.2B: Histiocytes in a palisade around a focus of degenerated collagen in the reticular dermis =…