A 14 year old male with history of trauma to his knee while…

A 14 year old male with history of trauma to his knee while playing football presents 6 weeks after the injury with persistent swelling and pain above the knee. Which of the following represents the most likely oncologic condition associated with this scenario?

You are completing a lumbar puncture in a 6-week-old infant…

You are completing a lumbar puncture in a 6-week-old infant with lethargy and fever. After obtaining a head CT which was read as normal with no acute intracranial process. In addition to obtaining CSF for protein and glucose, which of the following testing is most important to obtain?