We evaluated a 22-year-old patient complaining of acute breathlessness and pretibial edema in relapsed and refractory acute lymphoblastic leukemia (ALL). The patient was under rituximab-cyclophosphamide, vincristine, dexamethasone, doxorubicin (R-HCVAD) alternating with R-rituximab, methotrexate-cytarabine (MTX-ARAC) chemotherapies and he had a pancytopenia including severe thrombocytopenia. On his physical examination: The heart rate was 120 beats/min with evidence of pulsus paradoxus and the blood pressure was 85/60 mmHg. The jugular venous pressure was elevated up to the angle of the jaw. The cardiac apex was ill-defined and heart sounds were faint. There was no murmur or pericardial friction rub. He had severe pretibial edema because of hypoalbuminemia and acute right ventricular dysfunction observed by echocardiography. Electrocardiography revealed a poor R wave progression in all pre-