To the Editor: KEY POINTS Cardiac involvement can occur in RCC with or without inferior vena cava (IVC) involvement. Any patient presenting with cardiac or pulmonary symptoms should raise suspicion for pulmonary vein (PV) involvement. Identification of tumor-specific bio-markers can predict those who may benefit from targeted immu-notherapies. endobronchial ultrasound (EBUS)-intravascular aspiration is a novel technique and will play a future role in diagnostic sampling where alternative approaches are nondiagnostic or unsafe.
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