Frank Gaillard ◉ ◈

This 9-month-old boy presents with increasing irritability and head circumference. He undergoes a contrast enhanced MRI (T1 with contrast axial image is shown). Which of the following entities is most likely? 

Which of the following tumors is most likely to have prominent flow voids?

In a 20-year-old with seizures, an enhancing mass near the foramen of Monro most likely represents a...

Lhermitte-Duclos disease is most commonly associated with which of the following syndromes?

A 50-year-old man presents with altered conscious state and is evaluated with a non-contrast CT of the brain. What is the most likely underlying cause of the demonstrated abnormality?

Schizencephalic clefts are usually lined by...

Which of the following is NOT commonly associated with schizencephaly?

This 2-year-old boy presents with developmental delay and ataxia. What is the diagnosis?

Which of the following is TRUE regarding H3 K27-altered diffuse midline gliomas?

A 4-year-old girl presents with 1 month of impaired hearing, recurrent choking and headache. She is investigated with an MRI of the brain – see the accompanying T2 axial image. What is the most likely diagnosis?

A 70-year-old has long-standing cutaneous lesions, as shown on the accompanying axial CT of the chest. What is the most likely underlying condition?

Which of the following six images is most likely a case of one or more acoustic schwannomas? 

Which of the following CNS tumors has the best prognosis left untreated?

Subependymal giant cell astrocytomas are most frequently encountered in the setting of which disease?

A 2-year-old girl presents with a 15-month history of head shaking and bilateral nystagmus. She is investigated with an MRI. What is the most likely underlying condition? 

With which condition are plexiform neurofibromas most closely associated? 

A 50-year-old man presents with deteriorating memory over the last 3 months. He has a history of right eye rhabdomyosarcoma treated with surgery. No other known illnesses. He is investigated with an MRI of the brain. What is the most likely diagnosis?

A 9-year-old boy presents with nystagmus and ataxia. He is investigated with a brain MRI. What is the most likely diagnosis?

This 35-year-old man has a history of prior resection of a small renal cell carcinoma. Taking into account the findings seen on the accompanying CT and MRI, what underlying condition are they most likely to have?

What is the underlying cause of the skull-shape abnormality in the accompanying CT?