Figure 1
From: T-Cell/Histiocyte-Rich Large B-Cell Lymphoma of the Thyroid
(1a) Computed tomography of the thyroid tumor. (1b) Microscopic examination of the thyroid revealed that the tumor is comprised of scattered large atypical cells embedded in a background of histiocytes and small lymphocytes (hematoxylin and eosin staining). ( 1c , 1d ) The scattered atypical cells were positive for CD20 (1c) and CD79a (1d). ( 1e ) Small lymphocytes represent CD3-positive T-cells. ( 1f ) Substantial numbers of CD68-positive histiocytes are also intermingled. ( 1g ) Gallium scintigraphy showed increased gallium uptake in the thyroid exclusively.