A 6-year-old child complains of bilateral thigh pain, motor weakness, and some sensory deficits of both lower limbs; he has a history of bladder dysfunction over the past 2 weeks; MRI of the spinal cord shows a mass arising from the filum terminale and conus medullaris causing some pressure effect. A CNS tumor is suspected. Which of the following tumor is MOST likely arising in such site?

A 6-year-old child complains of bilateral thigh pain, motor weakness, and some sensory deficits of both lower limbs; he has a history of bladder dysfunction over the past 2 weeks; MRI of the spinal cord shows a mass arising from the filum terminale and conus medullaris causing some pressure effect. A CNS tumor is suspected. Which of the following tumor is MOST likely arising in such site?

Renal cell carcinoma (RCC) is rare in children, accounting for <5% of all renal tumors. All the following are true regarding RCC in children EXCEPT

Of the following, the WORST prognostic factor in pediatric osteosarcoma is

In Langerhans cell histiocytosis (LCH), which organ is LEAST likely affected?

Of the following, the genetic syndrome MOST likely associated with increased risk of optic glioma is