A ureterorrenoscopia e a cirurgia intra-renal retrógrada (conhecida como RIRS, de Regtrograde Intra-Renal Surgery) são as cirurgias endoscópicas utilizadas para tratar a litíase do aparelho urinário.
Nestas técnicas, é utilizado um instrumento chamado ureteroscópio, que pode ser semi-rígido ou flexível, e que é introduzido através da uretra, para fragmentar e remover as “pedras” que podem estar na bexiga, nos ureteres ou nos rins.
Os cálculos renais são fragmentados utilizando um laser, que é conduzido através de uma fibra óptica muito fina. Esta fibra é introduzida pelo ureteroscópio. Podem ainda ser utlizados instrumentos cirúrgicos para retirar os fragmentos dos cálculos. Por exemplo, pinças e cestos especiais, de muito pequenas dimensões, que são introduzidos no interior do ureteroscópio.
A cirurgia endoscópica é um procedimento muito eficaz para eliminar a litíase sem ter de recorrer a uma cirurgia aberta.
Fonte: Instituto da Próstata
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