The attendee will learn about the most common intratesticular masses and their sonographic features with attention to differentiating features.

Specifie leave alone lesions (tubular ectasia and epidermoid cysts) which may be mistaken for testicular neoplasms will be described. Testicular microlifhiasis will be reviewed.

In addition, the attendee will be shown the spectrum of paratesticular disorders and their differentiating characteristics.

Solid intratesticular masses are considered malignant until proven otherwise and surgery is performed for diagnosis and treatment.

Tubular ectasia and epidermoid cysts are benign lesions which may be mistaken for testicular neoplasms.

With an onion skin lesion, the urologist should be alerted to the possibility of an epidermoid cyst so that more conservative surgery can be performed.

While solid and cystic extratesticular lesions are usually benign, radiologists should be aware of the more common malignancies.

The first line imaging test for a scrotal mass is ultrasound, which can readily determine if the mass is intratesticular or extratesticular. Most intratesticular solid lesions are malignant and most extratesticular lesions are non neoplastic. This lecture will describe the sonographic findings of intratesticular and extratesticular masses and lesions with correlative imaging modalities when these add diagnostic value.