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Diagnostica per immagini della patologia scrotale non neoplastica

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Riassunto

Il didimo ha un asse maggiore sagittale, leggermente obliquo, compreso tra 42 e 58 mm, un diametro laterolaterale di 18–24 mm e un diametro antero-posteriore di 30–36 mm. Il volume (formula dell’ellissoide) normalmente risulta essere compreso tra 14 e 25 mL. All’ecografia (US) il parenchima testicolare è caratterizzato da fini echi addensati e omogenei, la cui intensità è bassa nel periodo prepuberale e aumenta, talora disomogeneamente, fino a raggiungere un livello medio nell’adulto, simile a quella della tiroide. La sottile tunica albuginea è riconoscibile come una linea ipoecogena sottostante il foglietto viscerale, iperecogeno, della tunica vaginale propria (Fig. 18.1 A). Il mediastino testicolare (mediastinum testis), a localizzazione posteriore, è rappresentato da un’area iperecogena ovalare o triangolare nella scansione assiale e allungata in quella sagittale (Fig. 18.1 B). La rete testis non è normalmente visibile. I vasi si identificano come sottili strie ipoecogene dirette obliquamente dal margine anteriore a quello posteriore verso il mediastino.

Normale rappresentazione (A) scansione longitudinale: ecostruttura del didimo, albuginea ipoecogena (freccia); (B) scansione assiale: mediastino iperecogeno (M), corpo dell’epididimo anteriore debolmente ipoecogeno (E), deferente posteriore nettamente ipoecogeno (D); (C) scansione longitudinale: testa dell’epididimo isoecogena; (D) scansione longitudinale: coda dell’epididimo ipoecogena

(A) Appendice di Morgagni (freccia). RVF, recesso vaginale funicolare; (B) appendice dell’epididimo (punta di freccia)

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Agostini, S. et al. (2010). Diagnostica per immagini della patologia scrotale non neoplastica. In: Imaging dell’Apparato Urogenitale. Springer, Milano. https://doi.org/10.1007/978-88-470-1769-6_18

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  • DOI: https://doi.org/10.1007/978-88-470-1769-6_18

  • Publisher Name: Springer, Milano

  • Print ISBN: 978-88-470-1768-9

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