Classification of Boisen et al for Testicular Position

Boisen et al listed criteria for classification of testicular position based on clinical and imaging findings.

Location	Additional Finding	Term
abdominal or ectopic; may be inside inguinal canal	may require surgical exploration to locate	non-palpable
entirely within the inguinal canal	may be difficult to palpate; location can be confirmed on ultrasonography	inguinal
above the scrotum, with upper pole in or close to the external opening of the inguinal canal	can be manipulated down from the inguinal canal	suprascrotal
upper part of the scrotum	can be pulled lower but immediately returns to higher position once traction removed	high scrotal
midpoint of testis above the midpoint of the scrotum	stays at the bottom of the scrotum once pulled down	normal-retractile
midpoint of testis at or below the midpoint of the scrotum		normal-scrotal

where:

• The midpoint of the scrotum is referred to as the border between the upper and lower part of the scrotum.

Differential diagnosis:

(1) small testicular size (may be too small to palpate)

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