technical success, safety, and clinical outcomes. Am J Roentgenol. 2018;210(5):1164-71. Doi:10.2214/AJR.17.18690. 14. Favero GD, Mario FD, Meggiato T, et al. Disappearance of gallbladder wall lesions after oral bile acids treatment—a pilot study. Current Therapeutic Research. 1993;54(4):384-8. Doi:10.1016/s0011-393x(05)80640-x. 15. Il'chenko AA, Orlova Iu N. [efficacy of ursodeoxycholic acid in gallbladder cholesterosis accompanied by cholecystolithiasis]. Eksp Klin Gastroenterol. 2003(1):46-50, 182.

飲食高脂低纖、長期空腹（如不吃早餐）： 不良的飲食習慣也對膽囊息肉的發生起到了推波助瀾的作用。長期保持高脂低纖的飲食模式，會導致體內膽固醇攝入過多，膽汁中的膽固醇飽和度升高，容易析出結晶，誘發膽囊息肉。而長期空腹，比如不吃早餐，會使得膽汁在膽囊內停留時間過長，膽汁濃縮，膽汁中的膽固醇等成分更容易沉積，從而增加了膽囊息肉的發生風險。

If unsure between categories, choose Low Risk category.

Contrast-enhanced ultrasound (CEUS) is a promising tool to improve the diagnostic accuracy in the detection and evaluation of gallbladder diseases. Numata et al. [12] used galactose palmitic acid contrast injection to assess polyps by analysing the criteria of tumour enhancement and tortuous-type tumour vessels; this technique demonstrated 91% accuracy in diagnosing malignant lesions [12]. Other studies showed a limitation related to the size of the lesions because diagnostic accuracy was greater in polyps more than 10 mm in size

The SRU consensus conference committee agreed that while CT may be helpful in distinguishing the aforementioned entities, the diagnostic accuracy of CT is inferior to that of CEUS or MRI for this purpose.

Significant findings suggesting malignancy at multivariable analysis include size larger than 15 mm, sessile shape, and identification at unenhanced CT

Compared with CT and MRI, several studies have shown the advantages of microbubble contrast-enhanced US (CEUS)