Pediatric brain tumors Quiz: Ace Your Exams

Get ready to dominate your medical and nursing exams by using our dynamic quizzes to elevate your knowledge and increase your confidence. Whether you're gearing up for the USMLE®, COMLEX®, or your next in-class assessment, Osmosis quizzes tackle key topics in pathology, diagnostics, and treatment approaches. By honing in on clinical readiness and decision-making, we make sure the knowledge you gain empowers you both in the classroom and in real-world practice. Jump in and supercharge your exam prep!

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A 4-year-old boy is brought to the emergency department due to progressive lethargy, drowsiness and vomiting. His parents state he had been complaining of progressive headaches and worsening vision for the past several months. Height, weight and head circumference are at the 50th percentile for age. His temperature is 37.0°C (98.6°F), pulse is 80/min, and blood pressure is 125/85 mmHg. On physical examination, the patient appears drowsy. Fundoscopic examination reveals bilateral papilledema. A brain MRI shows a lesion in the fourth ventricle with dilated ventricles. A stereotactic biopsy is performed, and the hematoxylin and eosin (H&E) stained sample is shown below. What is the most likely diagnosis in this patient?  



Reproduced from: Wikimedia Commons 

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