PMC10040259_01
PMC10040259_02
(
A
) Computed tomography (CT) angiograph revealing tumor mass. (
B
) Chest radiograph demonstrates prominent pulmonary artery segment on the left side and lysis catheter in the right pulmonary artery. Arrow indicates tumor mass in the pulmonary trunk.
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Repeat CT angiography ( Fig. 1A ) confirmed subtotal occlusion of the pulmonary trunk and pulmonary bifurcation, while all lobar pulmonary arteries were free from thrombus formation ( Fig. 1B ).
PMC10040259_03
Mediastinal giant B-cell lymphoma infiltrating the great cardiac vessels. Intraoperative view after opening (
A
) the pulmonary trunk with direct view of the tumor mass and (
B
) subsequent reconstruction of the pulmonary vessels with a polyester graft.
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 The primary histopathological examination confirmed a complete excision of a 7 cm x 6 cm gray-brown, plain tumor mass ( Fig. 2 ), with spindlelike cells and increased proliferative activity consistent with a B-cell lymphoma ( Fig. 3 ).