The Common Vein Copyright 2010
Introduction
The character of the prostate is based on its feel on palpation. Clinical examination of a normal prostate gland reveals a combination of features that describe it as smooth, elastic and “rubbery”. Galen described it as that “spongy flesh at the side of the neck of the urinary bladder”. Abnormalities of the prostate felt on direct clinical examination are nodules, induration, bogginess or fluctuance.
Character of the prostate on imaging
Ultrasound
The prostate gland on ultrasound is almost isoechoic and the gains have to be finely tuned on the ultrasound equipment in order to bring out the subtle differences in the texture of the gland and the surrounding tissue.
Transrectal Ultrasound in Transverse View |
Image Courtesy Ashley Davidoff Copyright 2010 98724c.8 |
Character on CT scanning
The normal prostate has non specific features on CT scan and demonstrates soft tissue density similar to the muscle surrounding it. The distinction between the various zones of the prostate usually cannot be appreciated on the normal gland.
Normal Size Shape and Characterof the Prostate 26 Year Old Male CTscan Isodense to Soft Tissue |
Image Courtesy Ashley Davidoff Copyright 2010 99331c02.8s.5 |
MRI Characteristics
MRI is the imaging modality that best characterizes the prostate. The T2 weighted sequence optimizes the distinction between the peripheral, central, transitional zones and the anterior fibrous layer
Normal Zonal Anatomy |
Image Courtesy Ashley Davidoff MD Copyright 2010 98877c.8s |