[Double contrast examination of the bile ducts (author's transl)].

Efficacy of double contrast X-ray study of the bile duct was studied. Using barium sulfate it was possible to demonstrate fine mucosal pattern (FMP) of the bile duct in the surgical specimen. Utilizing decompression catheter in 44 patients with extrahepatic jaundice, double contrast study was clinically performed. It was also possible to demonstrate FMP of the bile duct mucosa. Mucosal and intramural spread of bile duct carcinoma were revealed preoperatively. It was also useful in the differential diagnosis of the biliary tract diseases.