Mh. Sheu et al., Transurethral resection of the prostate-related changes in the prostate gland: Correlation of MRI and histopathology, J COMPUT AS, 24(4), 2000, pp. 596-599
Citations number
9
Categorie Soggetti
Radiology ,Nuclear Medicine & Imaging","Medical Research Diagnosis & Treatment
Purpose: The purpose of this work was to demonstrate signal changes of the
prostatic urethra after transurethral resection of the prostate (TURP) on M
R images and histopathologic correlation.
Method: Sixty-three patients with prostate cancer confirmed by either TURF
(Group A, 19 patients) or transrectal biopsy (Group B, 44 patients) were ev
aluated by endorectal MRI before radical prostatectomies. The MR images of
postcurettaged prostatic urethras were correlated with the histopathologic
features.
Results: On the T2-weighted images, a thin zone of hypointense signal surro
unding the curettaged prostatic urethra was identified in 52.6% (10/19) of
Group A patients, imaged soon after (mean 21.1 days) TURF, but was indiscer
nible in Group B patients and the other Group A patients, imaged later afte
r TURF (mean 49.2 days). This hypointense signal zone histopathologically c
orrelates with a zone of inflammatory tissue reaction surrounding the widen
ed urethra.
Conclusion: Inflammatory tissue reaction surrounding curettaged prostatic u
rethra after TURF accounts for the presence of a low signal zone on T2-weig
hted images.