Clinical Features and Prognosis of Cardiac Metastatic Tumors

Background: This study aimed to explore the clinical features and prognosis of cardiac metastatic tumors. In addition, whether continuing antitumor therapy after the development of cardiac metastases can benefit patients and the response of cardiac metastases were investigated.

Methods: A retrospective analysis was conducted on patients with malignancies who were admitted to Fujian Cancer Hospital and Fujian Provincial Hospital from January 2007 to September 2022, and the follow-up period ended in March 2023. Clinical data were gathered, treatment efficacy was evaluated, and survival analysis was performed.

Results: After the patients developed cardiac metastasis, the overall 30-day, 3-month, 6-month, and 12-month survival rates were 85.00%, 59.00%, 51.00% and 38.00%, respectively. With continued treatment, the average survival time was 27.33 months (95% confidence interval [CI]: 16.88-37.79), which exceeded the 6.6 months (95% confidence interval [CI]: 0.03-13.69) observed for patients who withdrew from treatment (P < 0.001). The responses of cardiac metastases corresponded to the responses of the primary tumors. Patients with a cardiac response had a median survival time of 55.60 months, which exceeded the 13.40 months observed for those without a cardiac response. However, there was no significant difference (P = 0.375).

Conclusions: In conclusion, continuing antitumor therapy after the development of cardiac metastases can significantly prolong patient survival. Cardiac metastases and primary tumors respond consistently to antitumor treatment. The risk of death due to heart failure in cancer patients with cardiac metastases needs to be further investigated.