PMC4201018_01
Enhanced computed tomography (CT) revealed progressive enlargement of the left lobe, which had caused severe compression of the trachea compared to the CT scan 1 week before.
gr1.jpg
PMC4201018_01_gr1.jpg
fig0005
Enhanced computed tomography (CT) revealed progressive enlargement of the left lobe, which had caused severe compression of the trachea (Fig. 1).
Histology of the right thyroid tumor (A) showed a predominant follicular pattern, and the left thyroid tumor (B) showed accumulation of the lymphnode cells. Immunohistochemical staining showed dominant expression of CD20+ (C-1) rather than of CD3+ (C-2) suggesting MALT lymphoma of the thyroid.
gr2.jpg
PMC4201018_01_gr2.jpg
fig0010
Histological examination of the right lobe showed a predominant follicular pattern in the PTC (Fig. 2A). Histopathological examination in the left lobe indicated extranodal marginal zone B-cell lymphoma of MALT type with extreme plasmacytic differentiation (Fig. 2B). Immunohistochemical staining was performed, and the plasmacytic cells showed dominant expression of CD20+ (B cell marker) rather than of CD3+ (T cell marker) (Fig. 2C) and of the kappa light chain rather than that of the lambda light chain.