Normal size of testis on ultrasound

  

Sonographic evaluation & measuring parameter of testis

Orchidometer Average Testicle Size Comparison

A- Size: 40–50 mm in length, 20–30 mm in width, 30 mm in anteroposterior dimension 

➤General Reference Values:

Neonates: ~0.27 mL
Prepubertal Boys: ~1–3 mL
Puberty (10–14 years): ~4–12 mL

Adults: 12–25 mL [±2–5 mL]. (average: ~18–20 mL) The normal sonographic volume of the testes varies by age and individual, but for adult males, the typical testicular volume ranges from 12 to 25 mL per testis.

➤Formula for Testicular Volume Calculation:

Testicular volume can be estimated using the ellipsoid formula:

Volume=0.52×Length×Width×Height (All measurements in cm, result in mL).

[e,g]. 

       

          

V=0.52 x 3.67cm x 2.62 cm x 2.32cm

          V=0.52 x 22.30cm

          V=11.60 

           Testicular volume = 11.6 mL/cc/gm. proved.

The medical term for an enlarged testicle is macroorchidism.

The medical term for a small testicle is Microorchidism/Testicular Atrophy

B-Echotexture: Homogeneous, medium-level echogenicity.

C-Margins: Well-defined and smooth.

D-Vascularity: Normal intratesticular blood flow with symmetric arterial and venous

waveforms on Doppler imaging.

Macroorchidism