title: Seasonal variations in cryptorchidism.
abstract: The month of birth of boys undergoing orchidopexy in the Oxfordshire Health District during the years 1974-83 was analysed. A significant seasonal variation with a peak in April was found for those boys operated upon by paediatric surgeons at a young age (0-4). Possible causes of this variation and its relationship to the aetiology of cryptorchidism are discussed.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003456:Cryptorchidism / Q000453:epidemiology* / Q000209:etiology / Q000601:surgery; D004739:England; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D009919:Orchiectomy; D012621:Seasons