The horseshoe kidney (HK) is a very rare renal malformation. It designates a transposition by fusion of the parenchymas of the two poles of the kidney. Its discovery is incidental to an autopsy. However, it is most often asymptomatic. Thus, we report a case of horseshoe kidney accidental discovery in a 58- year-old man. We take this opportunity to review the literature on embryological, clinical and therapeutic aspects of this malformation, which is one of the renal ectopies diagnosed in sub-Saharan Africa.