1. From Department of Ultrasound, Xinqiao Hospital, Third Military Medical University, Chongqing, China (H.X., Y.J., Y.G.); Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing, China (Y.C.); Department of Pathology, Xinqiao Hospital, Third Military Medical University, Chongqing, China (J.T.); Department of Medicine & Therapeutics, Prince of Wales Hospital, Chinese University of Hong Kong (J.S.).