A rare cause of a central bile duct stricture

History and clinical findings: A 55 year old female patient was diagnosed because of painless jaundice and weight loss. She had undergone conventional cholecystectomy 15 years before. Investigations: Bilirubin level before ERCP and stent implantation was 287 mu mol/l at maximum. A subtotal stenosis was found in the proximal common hepatic duct. Endosonographically, a mass of 14 mm diameter was seen. She was suspected of having a Klatskin tumour Bismuth type II. Tumour markers (CEA, CA19-9) were within normal ranges. Treatment and course: One month after stent implantation open surgery was performed suspecting a malignant tumour of the bile duct. A solid tumour at the hepatic bifurcation was resected completely. Reconstruction was performed by hepatico-jejunostomy was formed and the blind end of the jejunum was anastomosed to the gastric antrum to form an access loop". Upon histological analysis no malignancy was found. However, a distinct fibrosis within the suspicious area was seen, formed around braided suture material. Conclusion: Preoperative distinction between benign and malignant bile duct stenosis can be difficult, even impossible. Thus, every resectable bile duct tumour should undergo surgery even and especially if a histological diagnosis cannot be reached preoperatively and the condition of the patient is adequate.