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Estudou-se a viabilidade do autotransplante de tecido esplênico, um terço do baço, associado à esplenectomia parcial, e verificou-se a cinética evolutiva de sua regeneração, sob o aspecto macroscópico e histológico. Foram utilizados 28 ratos Wistar, adultos, machos, com média de peso de 300g, distribuídos em quatro grupos experimentais. Cada animal foi submetido à esplenectomia parcial, e um fragmento de baço foi transplantado para o omento maior, por períodos de 30, 60, 90 e 120 dias. Após cada período pré-estipulado, os tecidos esplênicos autotransplantados foram coletados e analisados histologicamente. Os resultados mostraram regeneração da cápsula esplênica, dos vasos sanguíneos e das polpas branca e vermelha. Aos 90 dias, a arquitetura microscópica apresentava-se semelhante à do baço normal. The splenic tissue autograft viability (one third of the spleen) associated to parcial splenectomy was studied to verify the evolutive kinetic of its regeneration by macroscopic and histological aspects. Twenty-eight adult male Wistar rats, weighting 300g, were distributed in four experimental groups. Each animal was submitted to parcial splenectomy and one fragment of each spleen was autotransplanted to the greater omentum, for a period of 30, 60, 90, and 120 days. After each period, the autotransplanted splenic tissues were collected and histopathologically analyzed. The results showed regeneration of the splenic capsule, blood vessels, white pulp, and red pulp. After 90 days, the microscopic architecture was similar to the normal spleen

Aspectos histológicos de fragmentos esplênicos autotransplantados em ratos