The above images are of the right kidney. The first image is the patient is supine and in the second image, the patient has been placed in the left lateral decubitus position. What is the most likley explanation for the findings on the ultrasound exam?

A young man presents from the ED with severe right flank pain.  This image is most consistent with _____.

Children with intussusception may exhibit the following clinical presentations except:

A thickened muscle in the pylorus that prevents food from entering the duodenum is:

The structure lying immediately superior to the kidney in this neonate is ____

Acute renal failure on sonography appears as all of the following except _____.

Which one of the following muscles lie posterior to the kidneys?

This middle aged patient has a history of Cushing’s syndrome.  What pathology is the arrow most likley pointing to?

A 21-year-old patient has a hypofunctioning adrenal gland, with symptoms of hypotension, weakness, and bronzing of her skin. What is the likely diagnosis for this patient?

A pitfall in diagnosing appendicitis may be which one of the following?