This image (B) was taken in the arterial phase after contrast injection.  What type of mass is likely represented by this contrast study?  

The following image was obtained from a patient that presented with elevated AFP and HCG. He was asymptomatic. Which of the following is the most likely diagnosis?

Which of the following numbers is ambiguous?

Which of the following is NOT influenced by parathyroid hormone levels?

Which layer of breast tissue is located at the arrow?

What is the density of iron, Fe?

All descriptions are true for potassium hydroxide.  Mark each chemical property of potassium hydroxide. 

This patient presents with a palpable, non-mobile mass. She has redness and  thickened skin in the area of the mass. On ultrasound you obtain this image. This  most likely represents?

What is the structure at the small white arrows  in this ultrasound image of the shoulder?

For numbers written in scientific notation, which of the following are true?  Mark each correct statement.