A 45 year old woman reports episodic shortness of breath, dizziness, and weight loss. On cardiac auscultation, an early diastolic sound is heard followed by a murmur that changes with body position. Echocardiography shows a pedunculated mass attached to the interatrial septum that prolapses through the mitral valve orifice. Which of the following is the most likely diagnosis?
- A)Left atrial myxomaGABARITO
- B)Rhabdomyoma
- C)Papillary fibroelastoma
- D)Fibroma
- E)Metastatic melanoma
Explicação
Left atrial myxoma is correct. Atrial myxomas are the most common primary cardiac tumors in adults and commonly arise in the left atrium near the fossa ovalis. They can cause constitutional symptoms, positional obstruction of the mitral valve, and embolic even... Ver explicação completa e trilha adaptativa →