How are ultrasound contrast agents excreted from the body?

What is the pathology demonstrated in these images?  

Which one of the following is the most likely condition to lead to cirrhosis in neonatal patients?

This contrast enhanced image of a liver mass was taken on a patient with a history of alcoholism and cirrhosis and a positive alpha fetoprotein. What is the likely diagnosis?

A 37 year old man is being evaluated for infertility. An ultrasound reveals dilated vessels in the right scrotum which are easily identified during a valsalva maneuver. What does this most likely represent?

Which of the following is a true statement regarding neonatal hip dysplasia?

This pediatric patient presented with left hip pain, limping, and difficulty bearing weight. What is the likely diagnosis?  

This image demonstrates the pylorus of a 4 month old infant. What is the normal measurement for the orange and green line respectively?   

Which of the following is false with respect to the coronal imaging plane for neurosonography?

What is the extension of breast tissue into the axilla called?