Pedunculated myxomata can have a "wrecking ball effect", as they lead to stasis and may eventually embolize themselves.

They tend to occur in more than one part of the heart at a time, and often cause symptoms at a younger age than other myxomata.

Other abnormalities are observed in people with Carney syndrome include skin myxomata, pigmentation, endocrine hyperactivity, schwannomas and epithelioid blue nevi.

[7] Right atrial myxomata rarely produce symptoms until they have grown to be at least 13 cm (about 5 inches) wide.

Usually, inadequate excision of the tumor, development from a secondary focus, or intracardiac implantation from the primary tumor are the attributable explanation for recurrence,[11] and it is more likely to occur in the first 10 postoperative years, especially in younger patients.

Untreated, a myxoma can lead to an embolism (tumor cells breaking off and traveling with the bloodstream).