Editing Prostate: Transrectal Ultrasound (section)

== Prostate lesions on TRUS ==
*'''<span style="color:#ff0000">Appearance of prostate cancer on TRUS:[https://www.ncbi.nlm.nih.gov/pubmed/2659828 §]'''
**'''<span style="color:#ff0000">Hypoechoic (darker): 60%'''
***See [http://www.aboutcancer.com/trus_in_prostate_cancer.htm Figure]
**'''<span style="color:#ff0000">Isoechoic: 39%'''
**'''<span style="color:#ff0000">Hyperechoic: 1%'''
*'''<span style="color:#ff0000">Differential diagnosis of hypoechoic (dark) lesion on TRUS (6):</span>'''
*#'''<span style="color:#ff0000">Prostate cancer</span>'''
*#*'''A hypoechoic lesion on TRUS contains cancer ≈20% of the time.'''
*#**While there is a need to biopsy hypoechoic lesions, these lesions are not pathognomonic for cancer and do not correlate with the aggressiveness of the disease as measured by Gleason score.
*#*The hypoechoic appearance of cancer in the prostate gland is due to the destruction of normal glandular tissue by the cancer cells. This produces less acoustic interfaces to reflect the ultrasound waves and a hypoechoic appearance.[https://www.baus.org.uk/_userfiles/pages/files/Publications/Transrectal%20Ultrasound%20%20Prostatic%20Biopsy%20FINAL.pdf]
*#'''<span style="color:#ff0000">Granulomatous prostatitis</span>'''
*#'''<span style="color:#ff0000">Prostatic infarct</span>'''
*#'''<span style="color:#ff0000">Lymphoma</span>'''
*#'''<span style="color:#ff0000">BPH nodules</span>'''
*#'''<span style="color:#ff0000">Normal urethra</span>'''
*##
*'''Many cancers, including hematologic malignancies of the prostate, are isoechoic'''