Fig. 1

Summary of main laboratory parameters of the patient. 1A On admission, a small amount of pericardial effusion was found on CT examination. 1B One week after admission, the patient had a significantly increased pericardial effusion and a right pleural effusion. 2A Ten days after admittance, ECG suggested frequent premature ventricular contractions. 2B Ten days after admission, pericardial effusion and pleural effusion further increased. 3A A smear of pericardial effusion showed leukemic cell. 3B Leukemic cells were found by flow cytometry analysis of pericardial effusion. 3C Leukemia cells were found by flow cytometry analysis of pleural effusion. 3D The patient was placed with a pericardiocentesis drainage tube. 4A One month after chemotherapy, the patient’s pericardial effusion was significantly reduced. 4B Reexamination 1 month after discharge revealed only a small amount of pericardial effusion