Cardiac Myxomas and Carcinomas: Is it Incidental or Consequential Finding?

Myxoma is the most common primary intracardiac neoplasm, ranging between 0.001% to 0.03% in the general population [1]. Cardiac myxomas are most frequently located in the left atrium in 80% of cases, with the remainder mostly originating from the right atrium [2]. Patients may present with various cardiovascular manifestations depending on the anatomical location (e.g., cardiac arrhythmia, embolization,..). It may also present with nonspecific constitutional sign and symptoms such as fever and weight loss [3,4]. The association between cardiac myxomas and other simultaneous tumors has previously been described in the case of carney complex. Carney complex is a rare autosomal dominant syndrome caused by abnormalities in the PRKAR1A gene [5]. Patients may present with skin pigmentations and a variety of endocrine and non-endocrine tumors [5]. However, multiple reports of cardiac myxomas in patients with synchronous primary tumors have been reported, speculating that cardiac myxomas may simultaneously be present with other primary cancers, not classified as the carney complex. A variety of malignancies have been documented that coincide with cardiac myxomas over the years. Meir et al., encountered a left atrial myxoma in the echocardiography of a 51-year-old woman presenting with fever after receiving first chemotherapy session for invasive lobular adenocarcinoma [6]. The association between breast adenocarcinoma and cardiac myxoma was also reported by Kataoka et al. and Özer et al. [7,8]. Nuño et al. and Hajsadeghi et al., described synchronous colorectal carcinomas with a cardiac myxoma [9,10].