quote from "Pediatric Surgery (Springer Surgery Atlas)" by Prem Puri, Michael E. Höllwarth -

"The testis fails to remain in the scrotum in a significant number of older boys. They appear to have acquired cryptorchidism, which has been called ascending testis, gliding testis, or pathologically retractable testis. The abnormality is likely secondary to failure of the spermatic cord to elongate in proportion to the boy himself. (The spermatic cord length doubles from 5 cm to 8–10 cm in the first 10 years after birth.) At surgery, the major finding is a fibrous remnant of the obliterated processus vaginalis, linking acquired UDT with inguinal hernia. Occasionally the processus is still patent as a latent hernia. The indication for surgery in this acquired group is failure of the testis to remain in the scrotum without traction."