Associated Conditions with Undescended Testis

Most Common Associated Anomalies

The American Urological Association guidelines identify inguinal hernia as one of the main reasons for treatment of cryptorchidism, alongside increased risks of impaired fertility, testicular malignancy, and torsion, in patients with undescended testis 1

Acquired cryptorchidism is more common in boys with a history of proximal hypospadias, suggesting a common mechanism, such as aberrant androgen signaling, may predispose to both anomalies, in children with undescended testis 2
The presence of unilateral or bilateral cryptorchidism with phallic anomalies such as hypospadias or micropenis should prompt consideration of disorders of sex development, in patients with undescended testis 2
Hypospadias or other phallic anomalies may indicate aberrant androgen signaling or potential disorders of sex development requiring additional evaluation, in children with undescended testis 2

The American Urological Association guidelines identify inguinal hernia as a main reason for treatment of cryptorchidism, alongside increased risks of impaired fertility, testicular malignancy, and torsion 3, 4
Inguinal hernia is a primary treatment indication for cryptorchidism, according to the AUA guidelines 3, 4

Inguinal hernia is a well-documented association with undescended testis and is directly emphasized in primary cryptorchidism treatment guidelines as a key complication requiring intervention 3, 4

Examine for inguinal bulge or hernia during physical examination of any boy with cryptorchidism 3

There is no evidence linking isolated cryptorchidism with congenital heart defects, according to the American Urological Association guidelines 3, 4, 5

Pyloric stenosis has not been shown to be associated with cryptorchidism; the two conditions arise from distinct embryologic pathways. 6
Cryptorchidism does not increase the risk of congenital heart defects, according to current urological guidelines. (Note: this statement is supported by guideline statements without a specific citation and therefore is omitted from the cited list.)

When cryptorchidism co‑exists with other genital anomalies (e.g., absent scrotum, hypospadias, micropenis), clinicians should evaluate for disorders of sex development, including the possibility of life‑threatening congenital adrenal hyperplasia in a genetic female. 6

In pediatric patients presenting with a unilateral undescended testis and absent scrotum on the same side, inguinal hernia is the most likely associated abnormality. American Urological Association recommendation. 7

The American Urological Association lists inguinal hernia as one of the primary indications for treating cryptorchidism, together with risks of reduced fertility, testicular cancer, and torsion. (Evidence level not specified). 7

All infant inguinal hernias should be surgically repaired to avoid bowel incarceration and gonadal infarction; the standard approach is concurrent repair at the time of orchiopexy, ideally before 18 months of age. (Evidence level not specified). 7