Tumor-like tricuspid myxomatus degeneration with a primary cardiac leiomyoma: A rare case report.

We present an unusual case of a 47-year-old male with a cardiac mass arising from the tricuspid valve, which was misdiagnosed as a cystic myxoma. The patient received successful resection of the pathological tissue and tricuspid valvuloplasty. The mass turned out to be tricuspid cystic myxomatus degeneration with a primary cardiac leiomyoma finally. There was no recurrence after complete resection and tricuspid valvuloplasty by 1-year follow-up. To our best of our knowledge, only several cases of primary cardiac leiomyoma have been reported, and this is the first case of primary cardiac leiomyoma involving the tricuspid valve in an adult man. The present case suggests that the tricuspid valve should be another rare site of primary cardiac leiomyoma.