PMC5366792_01
Thoracic computerized tomography showed bilateral, irregularly bordered, multiple ground-glass pulmonary nodules with diameters ranging from a few millimeters to 20 mm and, additionally, patchy ground-glass areas were detected.
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fig1
The chest X-ray and thoracic computerized tomography (CT) (Figure 1) showed bilateral, irregularly bordered, multiple ground-glass pulmonary nodules with diameters ranging from a few millimeters to 20 mm and additionally, patchy ground-glass areas were detected.
The lymphocytes infiltrated bronchiolar epithelium forming well-defined lymphoepithelial lesions. Scattered germinal centers were present throughout (hematoxylin-eosin staining, x200).
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fig2
Scattered germinal centers were present throughout (Figure 2).
CD20 positive B lymphocytes.
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fig3
B lymphocytes expressing CD20 and moderate intensity of IgM kappa surface immunoglobulin were shown in Figure 3.
The cells were negative for CD5.
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fig4
The cells were negative for CD5, CD10, CD21, and all T-cell-associated markers studied (Figure 4).