FNAC Smear of Tuberculous Granulomatous Lymphadenitis showing Epithelioid Cell
Granuloma on a Necrotic Background.
Noncaseating epithelioid cell
granulomas are observed (arrows).
Shago et al., "TFE3-Expressing Perivascular Epithelioid Cell
Neoplasm (PEComa) of the Sella Turcica," Endocrine Pathology, vol.
The epithelioid cell
in tuberculosis is secretory and not a macrophage.
(4) The following histological features are predictive of malignancy in AML: >70% atypical epithelioid cells
, >2 mitotic figures per 10 high-power field (HPF), atypical mitotic figures, and necrosis.
Although noncaseating epithelioid cell
granulomas are typical for sarcoidosis, small central necrosis can be found in some granulomas, leading to presumption of tuberculosis.
Among the 50 lymph node aspirates, 54% (27/50) of the smears showed epithelioid cell
granulomas in a background of caseous necrosis [Figure 4], which are characteristic of TB adenitis but 46% (23/50) of them showed only necrotic debris which was suggestive of suppurative lymphadenitis.
Keywords: Kidney tumor, perivascular epithelioid cell
tumor, partial nephrectomy
Old scar tissues are infiltrated with noncaseating epithelioid cell
granulomas in scar sarcoidosis (4).
Biopsy of the bronchial mucosa showed epithelioid cell
granulomas without necrosis.
Dermis showed epithelioid cell
granuloma and Langhans type giant cells mainly in the upper dermis with chronic inflammatory cells infil- tration, predominantly lymphocytes.
Sarcoidosis is a common multi-system granulomatous disease that is characterized by the formation of non-caseating epithelioid cell
granulomas in various tissues and organs.