Over the past years we have used of the type I collagen to tamponade transfixing hepatic lesions in dogs, manufactured at University of Campinas. We have considered the use of this collagen to tamponed transfixing renal lesions, wich can be molded to the entire wounded area thus tamponading all surface irregularities. In this way, a complete tamponade way be achieved, and urinary loss is prevented. Thirty six mongrel dogs received a perforating transfixing lesion in the distal region of the kidney, similar to that caused by a firearm bullet. Into the wounded tunnel type I collagen was introduced. Evaluations were made in the 4th , 7th, 15th, 30th and 60th day after the intervention, when animals were sacrificed. Microscope evaluation induced a homogeneous scar formation with early, organized renal regeneration evident from the 7th day onward. It is therefore believed that the use of type I collagen is an effective and safe method to be used in this type of renal wound.
Trauma; Collagen; Regeneration
