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Urogenital Imaging

Testicular prosthesis

commonly placed in patients with congenitally absent or surgically removed testes. There is no functional purpose; they are inserted primarily for psychological and cosmetic reasons. Older prostheses which are hard in consistency and contain viscous fluid must not be mistaken for a diffuse pathological process involving the entire testis. Newer prostheses are made of solid elastomer and have characteristics more like a normal testis. They can, of course, be differentiated from the normal testis by the absence of other intrascrotal or spermatic cord structures.

Testicular prostheses can be detected by any cross-sectional imaging method: ultrasound, CT or MRI (Fig.1). A request for imaging is usually to look for complications that may be associated with a testicular prosthesis and ultrasound is a first-line approach. If sonography is inconclusive, then either MRI or CT can be used.

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Fig.1

a. Voiding cystourethrogram in a patient with a testicular prosthesis (arrow). b. Axial T1-weighted MRI section showing the testicular prosthesis (arrow).
Testicular prosthesis, Fig.1 (a)
Testicular prosthesis, Fig.1 (b)