B18. Congenital anomalies of the gonads and vesicourethral unit (bladder, urethra)
Congenital anomalies of the testes
Cryptorchidism
Cryptorchidism is the failure of one or both testicles to descend into scrotum. Untreated, it increases the risk for testicular cancer, infertility, and testicular torsion.
- 1% of boys
- It’s the most common congenital anomaly of genitourinary tract
- Risk factors
- Prematurity
- Diagnosis
- Testis cannot be palpated in the scrotum
- Treatment
- Many spontaneously descent, but not after 6 months
- Within 6 – 18 months
- Orchidopexy
- Laparoscopic surgery
Congenital hydrocele
Congenital hydrocoele is a fluid collection between the layers of the tunica vaginalis.
- Causes painless, enlarged scrotum
- Usually resolves spontaneously
- Requires surgery if it persists beyond 12 months
Ectopic testes
- Testes is located outside the normal path of descent
- Increases risk of cancer and infertility
- In superficial inguinal pouch, perineum, femoral canal, suprapubic region
- Treatment is orchidopexy
Congenital varicocoele
Varicocoele, the abnormal enlargement of the pampiniform plexus in the scrotum due to obstruction of the spermatic vein, can be congenital/primary. It almost always affects the left testicle. It's an under-recognised cause of male infertility. It causes pain in the affected testicle and painless swelling. Surgery may be indicated in case of pain or infertility.
Congenital anomalies of the bladder
Bladder extrophy
- Male > female
- Bladder is herniated through defect in abdominal wall
- Associated with separation of pubic bones
- Treatment: surgery
Congenital anomalies of the urethra
Posterior urethral valve
- = tissue which obstructs the posterior urethra
- Common cause of urinary tract obstruction in newborn males
- Only affects males
- Associated with pulmonary hypoplasia
- Diagnosis by voiding cystogram
- Treatment: Valve ablation with cystoscopy
Hypospadias
- External urethral opening on ventral penis
- Only symptomatic cases require surgery
Epispadias
- External urethral opening on dorsal penis
- Often associated with bladder exstrophy
- Treatment: surgery