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Transrectal ultrasonography, or TRUS in short, is a method of creating an image of organs in the pelvis, most commonly used to perform an ultrasound-guided needle biopsy evaluation of the prostate gland in men with elevated prostate-specific antigen or prostatic nodules on digital rectal exam.
Since the mid-1980s, TRUS biopsy has been used to diagnose prostate cancer in essentially a blind fashion because prostate cancer cannot be seen on ultrasound due to poor soft tissue resolution. However, multi-parametric magnetic resonance imaging (mpMRI) has since about 2005 been used to better identify and characterize prostate cancer. [9]
Guided by ultrasound images, the doctor applies water pressure to reduce the amount of excess tissue. ... A transrectal ultrasound shows the prostate has a volume of 30 to 150 cubic centimeters ...
Transrectal biopsy is a biopsy procedure in which a sample of tissue is removed from the prostate using a thin needle that is inserted through the rectum and into the prostate. [1] Transrectal ultrasound (TRUS) is usually used to guide the needle. [2] [3] The sample is examined under a microscope to see if it contains cancer.
Prostate size of 30 cc or more indicates enlargement of the prostate. [53] Prostatic calcification can be detected through transrectal ultrasound (TRUS). Calcification is due to solidification of prostatic secretions or calcified corpora amylacea (hyaline masses on the prostate gland).
A urologist may perform additional tests such as a prostate-specific antigen (PSA) blood test or a bladder pressure testing. Imaging tests such as transrectal ultrasound and magnetic resonance imaging (MRI) might also be performed. Although prostatitis does not increase the risk of prostate cancer, a prostate biopsy may be performed. [20]
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