Nonhypertensive male with multiple paragangliomas of the heart and neck: A case report

Table 1 Timeline

Timeline of the patient
Initial presentation	Presented with the chief complaint of recently recurrent chest pain
Day 1	Echocardiography revealed an intracardiac mass in the right atrioventricular groove, wrapped around the proximal segment of the right coronary artery
Day 2	Coronary artery computed tomography showed that abnormal blood vessels were presented between the right atrium and right ventricle
Day 5	Coronary angiography showed that there were abundant blood vessels that were wrapped around and supplied the intracardiac mass in the right atrioventricular groove
Day 6	Positron emission tomography/computed tomography suggested that the intracardiac mass was a malignant tumor
Day 8	The level of normetanephrine in the blood was obviously increased
Day 18	Open heart surgery was performed, and the intracardiac mass was completely excised. Quick freezing pathology indicated that the intracardiac mass was a mesenchymal malignant tumor
Day 25	The final pathology results demonstrated that the intracardiac mass was a cardiac paraganglioma
Day 26	The combination of pathological and immunohistochemistry results demonstrated bilateral carotid masses, these bilateral carotid masses were also paragangliomas
Day 27	Discharged from hospital
Day 83	At the 3-mo follow-up, the patient did not have recurrent chest pain