A 7-year-old boy is brought to the A&E department with a cough and shortness of breath. There has been some history of fever, but no systemic upset. The chest radiograph reveals an ovoid opacity in the right mid-zone. The edges of the lesion are well defined. There are no air bronchograms. What is the most likely diagnosis?

What is the best first test to perform in a patient with suspected gallstones?

Which paediatric posterior fossa brain tumour is most likely to demonstrate diffusion restriction?

In Wilms tumour, hypertension is caused by...

The commonest paediatric renal tumour is...

The commonest site for metastases in Wilms tumour is...

In a child with an abdominal mass which of the following features would make you think that Wilms tumour is NOT the most likely diagnosis?

In splenic trauma, which of the following represents a grade I injury?

In splenic trauma, which of the following represents a grade I injury?

In splenic trauma, which of the following represents a grade II injury?

A 20-year-old is admitted to the Emergency Department following an isolated head injury which was sustained in a fist-fight. He is intoxicated, GCS 14. There is no focal neurological deficit, but he does keep vomiting.

What is the best imaging strategy?

In an extradural haemorrhage, the blood...

What is the most important diagnosis?

Which part of bowel is highlighted in the image below?

Which "I" is the most likely cause of the abnormality highlighted on this CT scan?

Which structure is inflamed on this CT image?

This patient has diverticulosis. Is there a complication?

What is the maximum allowable diameter of this section of bowel?

What is this and where is it?

Which structure is inflamed?