Different types of renal anomalies like renal agenesis, ectopic kidney, horseshoe kidney, aberrant renal arteries are common. However, renal rotational anomalies are relatively rare. The present case is unique and may be the first reported case of bilateral renal lateral rotation with unilateral cryptorchidism. During embryological development, kidneys ascend from the sacral region to the lumbar region while the testis descend downwards laterally from lumbar region to iliac part of pelvis and then medially downwards to scrotal sac through inguinal canal. The path of descent of testis and ascent of kidneys are fixed. We assume that in this patient due to lateral rotation of the kidneys, the lateralised ureter might had obstructed the descent of the testis. Developmental anomaly of the kidneys like lateral rotation can arrest descent of testis and cause cryptorchidism.
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