Objective To summarize and analyze the contrast-enhanced ultrasonographic findings of intraductal papilloma and to explore the clinical value and percutaneous transhepatic cholangial drainage (PTCD) strategy of contrast-enhanced ultrasonography in the diagnosis of intraductal papilloma.Methods We retrospectively analyzed 32 cases with intraductal papilloma confirmed by surgery,conventional ultrasound,transvascular contrast-enhanced ultrasound,intrahepatic contrast echocardiography to gather the diagnostic coincidence rate of conventional ultrasound and contrast-enhanced ultrasound in bile duct papilloma,thus making a summary of PTCD experience of intraductal papilloma.Results The diagnostic accuracy of conventional ultrasound and contrast-enhanced ultrasound in the diagnosis of intraductal papilloma were 43.8％ (14/32) and 93.8％ (30/32) respectively,and the differences were statistically significant (P =0.037).Conclusions Conventional ultrasound combined with double contrast ultrasound and cholangiography can improve the diagnostic accuracy of intraductal papilloma.Ultrasound-guided PTCD is a real-time,convenient procedure.Choosing a biliary drainage tube as thick as possible and repeatedly doubling the tube can maintain bile drainage and smooth flow,thus can effectively improve the efficacy of serum bilirubin reduction and protect liver function.

"Internet + Nursing Service" is an on-site nursing service carried out by means of the Internet. This paper analyzes the research progress and development of "Internet + Nursing Service" at home and abroad, and analyzes the risks and problems faced by my country's development of "Internet + Nursing Service", and puts forward targeted recommendations with a view to providing a reference for the in-depth development of "Internet + Nursing Service" in China.