<prompt> Atrial myxoma is associated with elevated serum levels of:IL 1IL 4IL 6None of the above  <response>: Left atrial LA myxoma may obstruct LA emptying, causing dyspnea, a diastolic murmur, and hemodynamic changes resembling those of MS. However, patients with an LA myxoma often have features suggestive of a systemic disease, such as weight loss, fever, anemia, systemic emboli, and elevated serum IgG and interleukin 6 IL-6 concentrations Ref: Harrisons principle of internal medicine 17th edition, chapter 230. 