Sonography by K. Thoirs

By K. Thoirs

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Epidermoid cysts usually grow slowly and seldom cause pain. , 2004). Recently magnetic resonance imaging has also played a role in this diagnosis of epidermoid cysts. (a) (b) Fig. 12. Testicular epidermoid cysts. (a) Typical sonographic pattern showing cystic lesion with an echogenic ring and some internal echogenic spots. (b) Magnetic resonance imaging was compatible with the diagnosis. This patient then underwent conservative surgery 6. 1 Varicocele (scrotal varices) Varicocele is a common cause of scrotal mass, and is estimated to affect 15% of males.

2011). The sonography should be focused on the presence of hematocele (fluid between the 34 Sonography layers of the tunica vaginalis), a discontinued line of the tunica albuginea, and unequal testicular sizes. It is important to consider that testicular torsion can occur after a minor trauma, and this should not be overlooked. (a) (d) (b) (e) (c) (f) Fig. 6. Testicular rupture. A 46-year-old male sustained a blunt force to the genitalia and scrotal painful swelling developed. (a-c) Ultrasonography showed an ill-defined testicular margin, deformity, heterogeneous echogenicity and swelling of the right testis.

It also shows the distal seminal tract formed of the ampula of the vas deference (d) which joins the seminal vesicle (S) to form ejaculatory duct (e) which opens at vera montanium (v) (adapted from McNeal 1968) 48 Sonography situated posteriorly, posterolaterally and a thin layer of this tissue also extends up laterally and anterolaterally. Distal to the verumontanum, the PZ often surrounds the urethra and occupies the apical region if the prostate. The transition zone (TZ) is situated on both sides of the proximal prostatic urethra and comprises only 5 to 10% of the glandular tissue in the non hyperplastic prostate.

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