Case presentation A 74-year-old male was admitted to the hospital for edema of face for 1 week and dyspnea for 5 days. One week before the admission,the patient developed edema of face and eyelids. Five days ago,he felt shortness of breath when lying down.In the following 2 d ays,he could not go to sleep.He was free from cough or expectoration,neither was chest distress.Since the onset of the disease,the patient was in low spirit s,but with normal appetite and no fever and night sweat.He lost 3 kilograms i n the last half year.