Figure 2

Gallium-67-citrate scintigraphy and postmortem specimen examination. (A) Anterior (left) and posterior (right) ⁶⁷Ga scans showed increased uptake by only the thoracic lymph nodes and the heart. (B, C) The cut surface of the heart at autopsy revealed lymphomatous involvements (*) of the epicardium (B) and the mediastinum (C). Of note, some of the involvements had infiltrated into the endocardium (arrow). (D) A histological section of the mediastinal lymph node demonstrated dense proliferation of large centroblastic cells with abundant pale cytoplasm. (Hematoxylin and eosin stain ×100.) Ao: aorta; LV: left ventricle; RV: right ventricle.