Pseudo Gallbladder sign in biliary atresia—an imaging pitfall
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Seerat Aziz & Yvette Wild & Philip Rosenthal & Ruth B. Goldstein
- چاپ و سال / کشور: 2010
Description
Background Ultrasound (US) is used to identify causes of neonatal cholestasis. We describe a potential sonographic pitfall, the gpseudo gallbladder,h in biliary atresia (BA). Objective To describe the Pseudo Gallbladder sign (PsGB sign). Materials and methods Sonograms/clinical records of 20 confirmed BA infants and 20 non-BA cases were reviewed retrospectively. For the BA group, preoperative sonography and surgical and pathological findings were examined. For the non-BA group, sonographic features and pathological findings were examined. The PsGB sign is defined as a fluid-filled structure, located in the expected region of the gallbladder, measuring . 15 mm in length but without a well-defined or normal-appearing gallbladder wall. Results A recognizable gallbladder and normal gallbladder wall were present in all non-BA infants. However, none of the BA infants had a sonographically normal gallbladder. Seventy-three percent of BA patients had a PsGB, and in 27% no gallbladder or gallbladder-like structure was detected. Conclusion A gallbladder-like structure in BA is common and can be misinterpreted as a normal gallbladder, delaying diagnosis and therapy. Recognition of this imaging pitfall, described here as the pseudo gallbladder sign, will help avoid this error.
Pediatr Radiol (2011) 41:620–626 DOI 10.1007/s00247-011-2019-1 Received: 28 October 2010 / Revised: 31 December 2010 / Accepted: 5 January 2011 / Published online: 16 March 2011
