Day 0	The patient presented with chest pain, and acute pericarditis was diagnosed.
Day 7	The patient had a fever, and a blood culture was performed.
Day 8	Pericardiocentesis was performed and revealed bloody fluid.
Day 11	Parvimonas micra was detected in the blood and pericardial effusion cultures.
Day 14	Chest computed tomography (CT) revealed an abscess cavity in the pericardial space around the RA and a trabecular shadow suggesting vegetation in the right atrium (RA).
Day 15	Transoesophageal echocardiography revealed vegetation in the RA, and emergency surgery was performed.
Day 51	The patient was discharged after complete recovery.
4 months post-operatively	Chest CT and transthoracic echocardiogram denied any recurrence of the abscess cavity and vegetation.
6 months post-operatively	The patient had no recurrence of infection or signs of constrictive pericarditis.