LAUSR

A 54-year-old male with previously known diagnosis of Carney complex and acromegaly was admitted with exertional dyspnea, chest pain, and palpitation. He had a prominent jaw and painless swelling of temporal part of the right upper eyelid (Figure 1A). Further physical examination revealed a solitary pedunculated cystic mass at the right flank area (Figure 1B and C). Electrocardiography showed sinus rhythm with pathological Q waves in the inferior leads. Transthoracic echocardiography exposed a multilobulated large mass in the left atrium with irregular borders, filling almost the whole chamber and protruding into the mitral valve during diastole (Figure 2A, B and Supplementary Video 1). There was global left ventricular hypokinesia with reduced ejection fraction. We learned that he had