Search Results for: epithelioid angiosarcoma

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A Clinical Atlas of 101 Common Skin Diseases

Necrobiosis Lipoidica

A granulomatous inflammatory process characterized clinically by patches that become yellowish plaques and that in time resolve with atrophy and telangiectases. The condition usually occurs in persons with diabetes.

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Nodular and Diffuse Dermatitis

…tis but a lymphoma. Figure 5.175 A&B. A nodule made up of epithelioid histiocytes: sarcoidosis. The nodular infiltrate throughout the dermis and in subcutaneous fat is composed mostly of epithelioid histiocytes, which qualifies this process as gr…

Histologic Diagnosis of Inflammatory Skin Diseases

Cells That Mediate Inflammation (Inflammatory Cells)

…instances, histiocytes that constitute a granuloma are “epithelioid,” i.e., cells with plump oval nuclei and pink cytoplasm that appear to touch one another as do the cells of an epithelium, e.g., as occurs with epithelioid cells in sarco…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…mages 10.95.1A: Nodular dermatitis, granulomatous + 10.95.1B: Epithelioid histiocytes aligned in a palisade around foci of degenerated collagen and necrosis of inflammatory cells, the histiocytes in turn being encircled by lymphocytes = Sarcoidosis  …

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

-oid?

…id to make up lesions of sarcoidosis are not always formed of epithelioid histiocytes (ones that are reputed to mimic the cells of an epithelium, but do not) devoid of an enveloping mantle of lymphocytes (so-called naked tubercles). Granulomas in sar…

Histologic Diagnosis of Inflammatory Skin Diseases

Sarcoidosis

…face. Findings histopathologic Fully developed Collections of epithelioid histiocytes throughout the dermis and sometimes throughout lobules of the subcutaneous fat; granulomas usually discrete, but may be confluent Tiny focus of necrosis in the cent…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…e result of an action)]: A collection of histiocytes, usually epithelioid ones (Fig. 3.17). Epithelioid histiocytes (Fig. 3.18) (so termed because of their resemblance to epithelial cells, namely, oval nuclei, readily discernable eosinophilic cytopla…

Histologic Diagnosis of Inflammatory Skin Diseases

Errors and Reasons

…, may be attracted, in the manner of a foreign body reaction, epithelioid histiocytes that assume a palisaded array, a pattern that may be encountered in but a few circumstances, chief among those being diseases such as lupus erythematosus and rheuma…

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