[Choledochal prostheses with lyophilized and siliconed dura mater. Experimental research; preliminary results].

: Personal experience with the application of choledochal prosthese in freeze-dried, siliconed dura mater is reported. The experimental model set up permitted the implantation of such a prosthesis in the rat. Retrograde cholangiography and histological examination revealed the total patency of the prosthesis in the long term, and complete epithelialisation.