Ultrasound examination of the testis is the imaging modality of choice for the evaluation of intratesticular focal lesions. In spite of its high sensibility, eco-Doppler-elastography is lacking of specificity in discrimination between benign and malign lesions, not always allowing us to make a definitive diagnosis of malignancy. When a diagnostic doubt persists, for such lesions that are indeterminate at clinical and radiological evaluation, it is possible to recur to ultrasound-guided testicular needle biopsy. This paper describes the main application scenarios of testicular fine-needle aspiration under ultrasound guidance and the experience in our institute.
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