A 31 year old woman came for routine endomyocardial biopsy seven years after heart transplantation. Her explanted heart demonstrated a chronic active myocarditis with focal giant cells. Two months prior to biopsy she was diagnosed with PTLD (Diffuse large B-cell lymphoma) in a lymph node, resulting in a decrease in her immunosuppresion. She had not begun definitive treatment for the PTLD yet.

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Recurrent giant cell myocarditis..

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