Painful cystic duct remnant diagnosed by endoscopic ultrasound.

Postcholecystectomy pain may remain unexplained and difficult to treat. This report describes three patients with constant postcholecystectomy abdominal pain that may have arisen from the cystic duct remnant or a neuroma of the cystic duct stump. In each case pain was exacerbated by pushing on cystic duct surgical clips with an EUS-guided needle, and temporarily abolished by an EUS-guided injection of bupivicaine and triamcinolone. Two patients underwent surgical resection of the cystic duct remnant and the third did not require further treatment. Two of the three patients had long-term improvement. EUS is a novel modality for assessing the cystic duct remnant and performing a therapeutic trial.