%0 Case Reports %T Primary cardiac angiosarcoma directly invading the right lung: An autopsy report. %A Kiwaki T %A Ishihara A %A Toyama T %A Kusaka H %A Kataoka H %J Clin Case Rep %V 9 %N 8 %D Aug 2021 %M 34457279 暂无%R 10.1002/ccr3.4582 %X We presented a difficult-to-diagnose case of cardiac angiosarcoma. The patient presented pericardial effusion, but cytology of the effusion was negative. Because cytological detection of angiosarcoma cells is difficult, a possibility of malignancy should not be excluded with negative cytological examination. Biopsy of cardiac mass is the best way for diagnosis.