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Most heart tumors begin with myxomas, fibromas, rhabdomyomas, and hamartomas, although malignant sarcomas (such as angiosarcoma or cardiac sarcoma) have been known to occur. In a study of 12,487 autopsies performed in Hong Kong seven cardiac tumors were found, most of which were benign. [ 1 ]
A myxoma is a rare benign tumor of the heart. Myxomata are the most common primary cardiac tumor in adults, and are most commonly found within the left atrium near the valve of the fossa ovalis. Myxoma may also develop in the other heart chambers. [1] The tumor is derived from multipotent mesenchymal cells. [1]
Thromboembolic symptoms: lung and systemic thromboembolic condition resulting from the tumor. [5] Symptoms caused by primary cardiac tumors are usually dependent on size and location. Cardiac tumors can cause a variety of symptoms. The mass size can obstruct blood flow or interfere with cardiac valve function and produce symptoms of heart failure.
These clots may disrupt circulation locally or dislodge and travel to the heart, lungs, or brain, and may be fatal. Symptoms of blood clots may include pain, swelling, warmth and in late stages, numbness, particularly in the arms and legs. Some cancer treatments may further increase this risk. [10]
Tumors range from millimeters to extensive tumors in the range of 12.5 x 10.0 x 8.5 cm. [8] For instance, individuals with larger tumors due to cardiac fibroma which include the conduction system of the heart can demonstrate cardiac dysrhythmias as a symptom.
The tumor weighed more than 1.5 pounds, which is, according to Northwestern Medicine, double the weight of an average heart and was completely covering DiLillo's heart.
A papillary fibroelastoma is a primary tumor of the heart that typically involves one of the heart valves. [1] Papillary fibroelastomas, while considered uncommon, make up about 10 percent of all primary tumors of the heart. [2] They are the third most common type of primary tumor of the heart, [3] behind cardiac myxomas and cardiac lipomas.
The most common type of primary tumors in adults—when they do happen—are myxomas. Myxomas are benign tumors that arise from the mesenchymal connective tissue inside the heart, as opposed to the actual myocytes, or the heart cells, since as an adult, the heart’s fully developed and its cells, or myocytes, are permanent and don’t proliferate.