The mediastinum testis is a thickened ridge of the tunica albuginea along the back of the testis. Fibrous septa run from it into the testis, and vessels, ducts and the rete testis pass through it.
| Location | Posterior border of the testis, along its length |
|---|---|
| Parts |
|
| Nerve Supply | Testicular plexus (T10-T11 sympathetic) |
| Blood Supply | Testicular artery |
| Venous drainage |
|
| Lymphatic drainage |
|
Supports the internal framework of the testis and carries vessels and ducts in and out.
It appears as a bright line on testicular ultrasound and is a normal landmark that should not be confused with a lesion.
The echogenic mediastinum can be mistaken for an abnormality by inexperienced scanners.
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