Statistical Evidence for Bimodal Age Distribution in Pediatric Orchiopexy: Support for Congenital and Acquired Cryptorchidism Subtypes

Age-at-orchiopexy demonstrates statistically robust bimodality, with early (1.31 years) and late (6.28 years) components. This bimodal pattern is consistent with, and may correlate with, clinically hypothesized congenital and acquired cryptorchidism subtypes, but it does not by itself prove distinct biological entities. The intersection at 3.8 years may offer a quantitative reference point for age-specific management strategies and surveillance protocols and should be interpreted as hypothesis-generating rather than prescriptive.