This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
Pyogenic liver abscess in the suppurative phase will appear as: 
Select and explain. 
A. Hypoechoic, B. Hyperechoic, C. Isoechoic, D. Cystic
B: Hyperechoic
Answer: B: Hyperechoic 
Explanation: Pyogenic liver abscess on ultrasound Multiple with irregular and faded margins. Their echogenicity varies Hypoechoic (pre-suppurative and resolution phase) Anechoic with floating or stratified echoes Hyperechoic (suppurative phase) In the chronic phase,walls may be hyperechoic with a thick fibrous capsule,and surrounded by a thin hypoechoic halo Ref:ultrasound of parasitic disease , 20.11.2012 11:05.