Leung classified polyorchidism (supernumerary testes) based on the site of embryological division.
Patient selection: male with polyorchidism
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Type
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Feature of Supernumerary Testes
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1
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no accompanying epididymis or vas
|
|
2
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shared vas with regular testis
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3
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shared epididymis and vas with regular testis
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4
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complete duplication of testis, epididymis, and vas
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Type 3 is the most common.
75% of supernumerary testes are on the left side (since the left side is more prone to division embryologically).
Associated anomalies:
(1) inguinal hernia
(2) maldescent of testis
