Rationale:
Primary cardiac lymphoma is a rare tumor, especially a tumor located in coronary sinus (CS). The most common symptom of cardiac tumors is dyspnea, accounting for 64%, followed by chest pain, accounting for 26%. However, the cases with paroxysmal supraventricular tachycardia (SVT) as a major clinical presentation are extremely rare.
Patient concerns:
We report a 55-year-old female patient with primary CS lymphoma and paroxysmal SVT.
Diagnoses:
After the surgical resection, pathology revealed the evidence of diffuse large B-cell lymphoma.
Interventions:
The patient underwent chemotherapy after CS tumor resection.
Outcomes:
The patient was disease-free during the 6-month follow-up.
Lessons:
CS enlargement may be the cause of SVT. Echocardiography should focus on the CS section to arrive at the right diagnosis.