Transrectal real-time elastography of the prostate: Normal patterns
Given the growing importance in clinical practice of transrectal real-time sonoelastography of the prostate, it is important to define normal patterns correlated to volume growth and reconsider the technical problems. We selected a sample of 100 men aged 30 to 87 with prostate volumes ranging from 2...
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Veröffentlicht in: | Journal of ultrasound 2011-12, Vol.14 (4), p.220-232 |
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Zusammenfassung: | Given the growing importance in clinical practice of transrectal real-time sonoelastography of the prostate, it is important to define normal patterns correlated to volume growth and reconsider the technical problems.
We selected a sample of 100 men aged 30 to 87 with prostate volumes ranging from 20 to 100 cc. Strain images were obtained using an end-fire convex probe. The elasticity patterns of the various anatomical zones of the prostate were compared with the volume.
The peripheral zone showed intermediate elasticity in 100% of cases regardless of the volume. We found some rare small areas of more limited elasticity in 23% of cases, among patients over 40. The posterior side of the central zone exhibited intermediate elasticity, and relative inelasticity was observed on the lateral side and at the base in 79% of cases. The entire central zone appeared compliant in 15% of cases and inelastic in 6%. The transition zone findings were stratified according to gland volume. When the volume was less than 45 cc, the transition zone was elastic in 67% of cases, inhomogeneously inelastic in 22%, and uniformly inelastic in 11%. In glands larger than 45 cc, the appearance was mainly elastic in 31% of cases, inhomogeneously inelastic in 57%, and uniformly inelastic in 12%.
Real-time elastography can distinguish the elastic properties of the prostate and define the normal patterns associated with increases in gland volume.
In relazione al ruolo che sta assumendo la sonoelastografia prostatica transrettale nella pratica clinica, emerge la necessità di definire la semeiologia dei quadri di normalità correlati alle fisiologiche variazioni del volume ghiandolare e riconsiderare le problematiche tecniche dell’esame.
Sulla base di specifici requisiti sono stati selezionati 100 soggetti (età 30–87 anni), con prostata di volume tra 20 e 100 cc. Mediante sonda convex end-fire sono stati analizzati i pattern di elasticità delle diverse zone anatomiche della prostata, correlati con il volume prostatico.
La zona periferica ha mostrato elasticità prevalentemente intermedia nel 100% dei casi indipendentemente dal volume, con rare aree di minore elasticità nei 23% dei casi in soggetti oltre i 40 anni. La zona centrale ha presentato elasticità intermedia del versante posteriore e ridotta elasticità del versante laterale e basale nel 79%; nel 15% e nel 6% dei casi si è osservato rispettivamente aspetto elastico intermedio e anelastico di tutta la zona centrale. La valutazione dei pa |
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ISSN: | 1971-3495 1876-7931 |
DOI: | 10.1016/j.jus.2011.10.005 |