PrintCauses and Risk Factors for Undescended Testicle
The cause of undescended testicle is unknown. Having a father or brother who had the condition increases the risk. Other risk factors include the following:
- Low birth weight (less than 2500 g)
- Maternal exposure to estrogen during the first trimester
- Multiple birth (e.g., twin, triplet)
- Premature birth (before 37 weeks gestation)
- Small size for gestational age
