Medically reviewed by Jay N. Yepuri, MDMedically reviewed by Jay N. Yepuri, MD Gallbladder sludge, or biliary sludge, is a mixture of particles and bile that can build up in the gallbladder.

For all six children with gallbladder sludge, EST and endoscopic nasobiliary drainage were initially performed and sludge was noted during EST in all children (Fig. 2). The disappearance of ...