Editing AUA: Cryptorchidism (2018) (section)

=== Timing ===

*'''<span style="color:#ff0000">Infants with a history of cryptorchidism (detected at birth) who do not have spontaneous testicular descent by 6 months (corrected for gestational age) should be referred to an appropriate surgical specialist for timely evaluation.'''
**'''<span style="color:#ff0000">Spontaneous descent of testes may occur in the first 6 months of life.'''
**'''<span style="color:#ff0000">Testes that remain undescended by 6 months (corrected for gestational age) are unlikely to descend spontaneously.'''
**Longer duration of testis undescent correlates with higher rates of germ cell loss and adult infertility
*'''<span style="color:#ff0000">In the absence of spontaneous testicular descent by 6 months (corrected for gestational age), surgery should be performed within the next year (first 18 months of life).'''
**'''<span style="color:#ff0000">While it is optimal to perform surgery for the cryptorchid testis by 18 months of age, there are clear benefits to performing orchidopexy in all prepubertal boys at the time of diagnosis of a cryptorchid testis'''
***Progressive and adverse histologic changes will occur in the cryptorchid testis prior to puberty
**'''<span style="color:#ff0000">In the post pubertal child with cryptorchidism, consideration should be given to performing an orchiectomy or biopsy, although there needs to be careful consideration of other factors including associated medical conditions, anesthetic risk, and status of the contralateral testis.'''