Coagulopathy in acute promyelocytic leukemia (APL) is a very complex disorder and is believed to result from interplay of various factors. Usually patients present with bleeding tendencies which can be life threatening. However, a few present with thromboses. Here, we report a young male with APL who presented with ischemic stroke in young.
Case ReportA 23-year-old male presented to casualty with 1 month history of fever, symptomatic anemia followed, around 15 days later, by bleeding tendencies in the form of epistaxis, hematemesis, and melena. Two days prior to presentation to the hospital, he developed slurring of speech, pooling of secretions in mouth, and facial deviation toward the left side. His prior medical history was unremarkable with no history of hypertension, diabetes, smoking or alcohol consumption. On examination he was drowsy but arousable, disoriented to time, place, and person. He had pallor with widespread petechiae. His BP was 128/86 mmHg with temperature of 38.3°C. He was uncooperative for detailed neurological assessment; however, he had evidence of facial paresis on left side with extensor plantar on the left side. Spleen was palpable 4 cm below left costal margin. On investigation, hemoglobin (Hb) was 75 gm/l, total leukocyte count (TLC) was 85 9 10 9 /l, and platelets were 45 9 10 9 /l. Peripheral smear showed more than 90% abnormal hypergranular promyelocytes (Fig. 1). Blood chemistry was essentially normal. Coagulation profile revealed deranged prothrombin time (18 s with control of 12 s) with normal activated partial thromboplastin time (APTT), thrombin time (TT), and fibrinogen levels. D-Dimer levels were raised. Urgent noncontrast CT scan of the head was carried out which showed a hypodense area suggestive of infarct in the right parietooccipital region along with cerebral edema (Fig. 2). ECG showed sinus tachycardia with T wave inversion in anterior and lateral leads. Troponin (T) was negative. On the basis of peripheral smear findings and clinical presentation, the patient was immediately started on all-trans-retinoic acid (ATRA) at a dose of 45 mg/m 2 . As he presented in Sanz high risk category with very high TLC, ATRA was followed by parenteral daunorubicin at dose of 60 mg/m 2 . Blood component support with fresh frozen plasma, platelet concentrates, and packed RBC was given along with mannitol as the cerebral decongestant. Bone marrow examination done subsequently showed replacement by abnormal hypergranular promyelocytes with strong cytochemical positivity for myeloperoxidase (MPO) and sudan black (SBB) stains compatible with diagnosis of acute promyelocytic leukemia (APL) (Fig. 2). Immunophenotyping revealed positivity for CD 13, CD 33, CD 34, anti-MPO and negativity for HLA-DR, CD 2, CD 7, CD 79a, CD 117, and CD 19 in these cells. Coexpression of CD 10 was also noted. The diagnosis of APL was confirmed by positivity for PML-RARa (promyelocytic leukemia-retinoic acid receptor alpha) fusion transcript by reverse-transcription-polymerase chain reaction (RT-PCR). Howe...