A. Ask if any genital pain
B. Inspect the scrotum
- Note the position of the testes and any paratesticular swellings or tenderness. Looking for redness, swelling, or ulcers, lifting it to inspect the posterior surface and the perineum. Sebaceous cysts are common in scrotal skin.
C. Gently palpate the scrotum
- Palpate the scrotum gently using both hands. Check that both testes are present: (The right testicle is usually closer to the inguinal canal than the left, but testes may be highly mobile/retractile.) If they are not, examine the inguinal canal and perineum for ectopic testes. Ask about previous excision surgery or retractile/undescended testes.
With each testis in turn, place the fingers of both your hands behind the testis to immobilise it and use your index finger and thumb to palpate the body of the testis methodically. Feel the anterior surface and medial border with your thumb and the lateral border with your index finger. Note size and consistency of the testis -they should be approx. equal in size (A normal testis is 5cm long), smooth and fairly firm. Note any nodules or irregularities. Measure the testicular size in cm from one to the other. Small firm testes suggest hypogonadism or testicular atrophy. Lumps within the testes themselves are of much greater significance than lumps which are separate.
The epididymis and surrounding structures should also be palpated for lumps, thickening or tenderness. Epididymal cysts are a common finding and benign. The normal epididymis is barely palpable except for its head which feels like a pea separate from the superior pole of the body of the testicle.
D. Palpate the spermatic cord
- Palpate the spermatic cord with your right hand. Gently pull the testis downward and place your fingers behind the neck of the scrotum. Feel the spermatic cord and within it the vas, like a thick piece of string.
E. Transluminate any scrotal swelling
- Transluminate to determine if a mass is solid or cystic. Place a torch against the swelling. Fluid filled cysts
allow light transmission and the scrotum glows bright red. This is an inconsistent sign which does not differentiate a hydrocele from other causes of intrascrotal fluid e.g. a large epididymal cyst. With thick walled cysts, transillumination may be absent.
F. Ask patient to stand and examine whether you can get above any swelling
- A varicocele feels like a ‘bag of worms’ in the cord and should disappear when the patient lies down. If it does not then consider a pelvic mass compressing the testicular veins. Decide whether a swelling arises from the scrotum or the inguinal canal. With the patient standing, if you can feel above the swelling it originates in the scrotum; if you can’t the swelling usually originates in the inguinal region, it may be a varicocele or inguinal hernia which has descended into the scrotum.
A bulky or painful mass in the scrotum when you cannot palpate the testis needs an ultrasound to clarify the nature of the intrascrotal structures.
A retracted testicle accompanied by acute pain and swelling occurs in testicular torsion, which is dealt with as an emergency.
Differentials:
- Attached to testis: Solid (non-translucent): testicular tumour
- Cystic (translucent): hydrocele
- Separate from testis: Solid (non-translucent): chronic epididymitis
- Cystic (translucent): epididymal cyst