[Tomato skin in the common bile duct after endoscopic sphincterotomy]

Lithotomy and endoscopic sphincterotomy were carried out in a 83-year-old woman because of choledocholithiasis. One year later calculi and tomato skins were found in the common bile duct. Significance is attributed to the tomato skins in the development of calculi. The attention is drawn to the observation that operative interventions performed through the Vater's papilla, spontaneous or iatrogenic choledochoduodenal fistulas create favourable conditions for foreign material to get into the choledochus and this may cause lithogenesis.