The normal testis is oval, homogeneous, and hyperechogenic.
- The average length in adults is 5.0cm.
- The average width is 3.0cm.
- The average transverse diameter is 2.0cm.
- The verticle diameter is 2.5cm.
The epididymis lies on the inferior aspect of the testis and is more echogenic than the testis. It is subdivided into a head, body, and tail, the head being the part most reliable demonstrated by ultrasound.
The two testes are separated in the scrotum by a hyperechogenic septum. There are often small collections of fluid within the Scrotum.
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