Background: The objective of this paper was to demonstrate that the grafts of cervical splenic transplantation on rats using our experimental model present a normal histological appearance.
Methods: Isogenic consanguineous Lewis rats 12 weeks old and weighing 250 gr. were used. Histological findings of a group of 25 cervical splenic grafts transplanted by means of splinting vascular venous microanastomoses and a group of 25 splenic grafts autotransplanted in the omentum were compared with a control group. The specimens were assigned according to a score of 0 to 4, following Moore's histological criteria.
Results: All grafts in transplanted and autotransplanted groups had a score of 3 or 4. Then, all splenic grafts from the transplanted group had histological findings very similar to a normal spleen. In the autotransplantation group, the percentage of grafts with a score 3 (60%) was superior to the transplantation group (46%). However, the transplantation group presented a percentage of score 4 (54%), superior to the autotransplantation group (40%).
Conclusions: In our study all grafts from the cervical spleen transplantation group had histological findings very similar to a normal spleen. The percentage of spleens with histological normality in the transplantation group was superior to the autotransplantation group. However, there was no statistical significance.
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