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 3-year-old boy is brought to the emergency department by his parents due to irritability and severe nausea and vomiting for the past day. His parents state that he has been eating less than usual for the past week. His temperature is 37.0°C (98.6°F), pulse is 80/min, and blood pressure is 118/75 mmHg. On physical examination, horizontal nystagmus is present, and limb movement is uncoordinated. Magnetic resonance imaging of the brain is obtained and shown below:

An axial M R I of a human head shows a large, well-defined mass in the posterior fossa, compressing brain structures. The mass appears heterogenous, w/ brighter & darker areas.

An axial M R I of a human head shows a large, well-defined mass in the posterior fossa, compressing brain structures. The mass appears heterogenous, w/ brighter & darker areas.

Reproduced from: Wikimedia Commons
Which of the following is most likely to be seen on histologic evaluation of the mass?

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Choose an option:

A microscopic view shows numerous pink cells with prominent purple nuclei, scattered across the field. Some cells are arranged in small clusters, others appear individually. Reproduced from: Wikimedia Commons

A high magnification image shows numerous small, irregular cells densely packed in a tissue section, with some areas of reddish-pink material and blood vessels. Reproduced from: Wikimedia Commons

A high magnification view of a microscopic slide shows purple and pink tissue sections. Areas of dense purple cells mix with lighter pink, amorphous structures. Reproduced from: Wikimedia Commons

A microscopy image shows many circular structures with concentric layers in varying shades of pink and purple. They are tightly packed together within a tissue matrix. Reproduced from: Wikimedia Commons

A microscopy image shows tangled purple fibers with scattered dark purple cells. Fibers crisscross, forming a dense network, some areas showing thicker bundles. Cells are irregularly shaped. Reproduced from: Wikimedia Commons

A magnified view of tissue shows numerous small, dark purple cells scattered across a swirling pink background, with areas of denser cellular clusters. Reproduced from: Wikimedia Commons