A 62-year-old breast cancer survivor visits her physician because of weakness, fatigue, fever, and weight gain 5 years following her radiation therapy. The physician also elicits complaints about abdominal discomfort and exertional dyspnea. Physical examination reveals hepatomegaly and jugular venous distention that fails to subside on inspiration, but shows no evidence of hypotension or pulsus paradoxus. An echocardiogram shows reduced end-diastolic volumes and elevated diastolic pressures in both ventricles. Which of the following is the most likely diagnosis?
A. Cardiac tamponade
B. Congestive heart failure
C. Constrictive pericarditis
D. Dilated cardiomyopathy
E. Recurrence of breast cancer
A. Cardiac tamponade
B. Congestive heart failure
C. Constrictive pericarditis
D. Dilated cardiomyopathy
E. Recurrence of breast cancer