| Time | Events |
|---|---|
| Day 1 | A complete atrioventricular block was detected on electrocardiography and a mass in the right atrium was detected on transthoracic echocardiography |
| Day 3 | A surgical resection of tumour and epicardial lead implantation were performed |
| The diagnosis of malignant lymphoma was confirmed with a histopathological analysis | |
| Day 4 | Chemotherapy was initiated |
| Month 2 | Whole body positron emission tomography-computed tomography (PET-CT) showed no clinically significant accumulation of fluorodeoxyglucose |
| Month 29 | PET-CT showed no sign of recurrence |
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