MCQ – 88837


A 9-year-old boy presents with fever, feeling unwell, and easy bruising on his legs. On examination he is pale, blood pressure 100/60 mm Hg, pulse 100/min, and temperature 37.8C. His lungs are clear, his abdomen is soft with a palpable spleen, and there are petechiae and bruises on his legs. His CBC reveals a hemoglobin of 8.5 g/dL, WBC of 17,000/mL, and platelets of 30,000/mL. A blood film reveals neutropenia and leukemic lymphoblasts. Which of the following is the most appropriate initial diagnostic test to confirm the diagnosis?


lumbar puncture and cerebrospinal fluid (CSF) fluid for cytology


bone marrow aspirate and biopsy


CT scan abdomen


chest x-ray

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