Song-Ee Baek MD, Presenter: Nothing to Disclose

Yong Eun Chung MD, PhD, Abstract Co-Author: Nothing to Disclose

Jae Young Lee MD, Abstract Co-Author: Nothing to Disclose

Hye-Jeong Lee MD, Abstract Co-Author: Nothing to Disclose

Myeong-Jin Kim MD, PhD, Abstract Co-Author: Nothing to Disclose

1. To reivew techniques of focused US of gallblader (GB) 2. To explain differential US findings of GB wall thickening among adenomyomatosis, cholecystitis and cancer 3. To discuss differential points of benign and neoplastic GB polyp

Outline 1. Techniques of focused GB US: selecting probes and optimizing parameters 2. Differential US findings of GB wall thickening: Rokitansky-aschoff sinus (RAS), cholesterol crystal, comet tail artifact, twinkling artifact, preservation of GB wall layer 3. How can we diagnose neoplastic polyp: size, multiplicity, echogenecity, shape, growth rate 4. Strong point and weakness of trans-abdominal GB US, compared to endoscopic US 5. Typical cases and mimickers The major teaching points of this exhibit are: 1. US is a still powerful tool for diagnosis of GB disease 2. GB wall thickening with RAS, cholesterol crystal and preservation of GB wall layer suggest adenomyomatosis rather than GB cancer 3. A single polyp with hypoechogenecity, larger than 1cm and sessile shape may have higher chance to be confirmed as neoplastic polyp.

http://abstract.rsna.org/uploads/2014/14003511/14003511_re85.pdf

Baek, S, Chung, Y, Lee, J, Lee, H, Kim, M, Focused US of Gallblader: Technique, Differential Points and Pitfalls.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14003511.html