[Partial replacement of the ureter with lyophilized human dura mater. Experimental research (author's transl)].

In order to evaluate whether and how for lyophilized human dura mater deserves to be used in the field of ureteral alloplastic surgery, the authors present and discuss the results they obtained during the course of experimental research. In the light of their personal histological documents, they stress the absence of reject phenomena, a property which, together with the absence of precipitates, the complete reepithelialisation of the transition epithelium and the ability to ensure normal ureteral perviousness, evidences that lyophilised human dura mater has full rights to a place in substitutive surgery of a segment of ureter, in particular the lumbo-liiac segment.

[Repair of large vesical wall defects with lyophilized dura mater. Experimental research (author's transl)].

In order to evaluate whether and how far a fuller case documentation can contribute to a better knowledge of the real possibilities of the lyophilised human dura mater in the field of vesical alloplastic surgery, the Authors present and discuss the results they obtained during the course of experimental research. In the light of personal histological documents, they stress the absence of reject phenomena, a property which, together with the absence of precipitates, the complete re-epithelialisation of the transition epithelium and the possibility of ensuring good vesical capacity, evidence that lyophilised human dura mater has full rights to a place in repair surgery of large vesical wall defects.

[Repair of large defects of the abdominal wall with lyophilized dura mater. Experimental research (author's transl)].

In order to evaluate whether and how far lyophilised human dura mater deserves to be preferred in repair surgery of large defects of the abdominal wall, the Authors present and discuss the results they obtained during the course of experimental research. In the light of personal histological documents, they stress the absence of reject phenomena and the peculiar capacity of the prosthesis for substitution by cicatricial tissue, properties which, together with the complete re-epithelialisation of the peritoneal mesothelium and the resistance to mechanical stresses, evidence that lyophilised dura mater must rightly be given preference in plastic reconstruction of large defects of the abdominal wall.