Abstract
Background : Extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT) may be accompanied by epithelioid cells. We herein report on a case of MALT lymphoma with many epithelioid cells.
Case : A 76-year-old male with an abnormal shadow in the right upper lobe visited our hospital. Positron emission tomography/computed tomography revealed a moderate accumulation of 18F-fluorodeoxyglucose. Transbronchial needle aspiration cytology was positive for lymphocytes and plasmacytoid cells, mixed with ciliated columnar epithelial cells and many epithelioid cells. Histology was positive for lymphoepithelial lesions with many lymphocytes, plasmacytoid cells, and epithelioid cells.
Conclusions : MALT lymphoma may be accompanied by many epithelioid cells. Thus, MALT lymphoma as well as sarcoidosis should be considered in patients with lymphocytes and many epithelioid cells in the lung.
