Final answer:
The most common primary cardiac tumor in adults is myxoma, which typically develops in the left atrium of the heart. It is a benign tumor composed of abnormal connective tissue cells.
Step-by-step explanation:
The most common primary cardiac tumor in adults is myxoma. A myxoma is a benign (noncancerous) tumor that typically develops in the left atrium of the heart. It is composed of abnormal connective tissue cells and is characterized by a gelatinous appearance.
Myxomas can cause symptoms such as shortness of breath, dizziness, chest pain, and palpitations. They can also lead to complications like obstruction of blood flow and stroke.
Treatment usually involves surgical removal of the tumor, and the prognosis is generally good.