Myxoma shows unspecific symptoms similar to other cardiac disorders. Late resection of myxoma will worsen output such as congestive heart failure, cardiac arrhythmia, and cardiac embolism, causing sudden death. Early diagnosis and surgical excision of cardiac myxomas, especially with the villous surface, must be done as soon as possible. Additional diagnostic examination was needed to define types of myxoma for earlier treatment to prevent complications. We present a case of atrial myxoma which was diagnosed and treated earlier than the median time reviewed by the previous study. This paper focuses on the importance of early diagnosis and defining types of myxoma. © 2021, ČKS.