epithelioid cell

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epithelioid cell

[‚ep·ə′thē·lē‚ȯid ‚sel]
(histology)
A macrophage that resembles an epithelial cell. Also known as alveolated cell.
References in periodicals archive ?
The histopathologic examination revealed caseating granulomas with epithelioid histiocytes and giant cells.
The granulomas may often be solitary giant cells, or a small cluster of loosely organized epithelioid histiocytes.
5) The lesions all have a similar appearance and consist of a central core of amorphous necrosis, around which are palisading, spindled, and epithelioid histiocytes and multinucleated giant cells.
The granulomas consist of Langerhans giant cells, epithelioid histiocytes, lymphocytes, and occasional plasma cells.
The granulomas were composed of epithelioid histiocytes admixed with occasional multinucleated giant cells.
Histologically, there are sheets of large epithelioid histiocytes with prominent nucleoli, exhibiting emperipolesis (lymphocyte, plasma cell, or neutrophil phagocytosis), admixed with prominent small lymphocytes and polytypic plasma cells (Figure 5).
Spheroids were surrounded by foreign body giant cells with adjacent nonnecrotizing granulomatous inflammation showing compact epithelioid histiocytes, lymphocytes, plasma cells, and mild fibrosis.
Specifically, necrobiosis with pallisading epithelioid histiocytes is most often seen in NBX, whereas large lymphoid aggregates with reactive germinal centers are often found in cases of AAPOX.
Hematoxylin-eosin-stained and Movat-stained sections demonstrated a rounded infarct composed of coagulative necrosis that was well demarcated from the surrounding intact lung parenchyma by a zone of epithelioid histiocytes and fibrous connective tissue.
Bone marrow biopsy showed normocellular bone marrow with rare small clusters of epithelioid histiocytes.
The granulomatous infiltrate was composed of epithelioid histiocytes with mild to moderate lymphoid inflammatory infiltrate (Figure 2).
Microscopic examination revealed an intense inflammatory infiltrate composed mostly of lymphocytes, rare polymorphonuclear leukocytes, and epithelioid histiocytes forming ill-defined granulomas.