Objective To explore the CT and echocardiographic features of primary cardiac sarcoma (PCS).

Methods 19 patients with PCS diagnosed by operation and pathology in Xiamen Branch hospital and Zhongshan Hospital, Fudan University from January 2010 to January 2020 were included and the characteristics of CT and echocardiography were retrospectively analyzed.

Results Among the 19 patients, there were 10 males and 9 females, aged from 33 to 68 years, with a median age of 48 years.14 patients had primary cardiac angiosarcoma, CT plain scan showed low density, the enhanced scan showed uneven enhancement, with visible flocculent and reticulated vascular shadow. The echocardiogram showed medium and low echoes of varying sizes, with a fixed tumor shape and no mobility. In 4 cases of primary cardiac synovial sarcoma, CT plain scan showed uneven distribution of low density shadows, with moderate enhancement after enhanced scanning, and the boundary between the mass and surrounding tissues was unclear. The echocardiogram showed medium and low echo, blurred borders, and no mobility of the tumor. In one case of primary cardiac undifferentiated sarcoma, CT showed that the mass was medium to low density, with uneven density and mild enhancement. The echocardiogram showed a mass of moderate echo, irregular shape, fixed position, and low mobility.

Conclusions CT enhancement of the primary cardiac sarcoma is enhanced to a certain extent. Echocardiography shows mass with moderate to low echo and low mobility. CT combined with echocardiography is helpful for the initial diagnosis of primary cardiac sarcoma.