the intermingling of prostatic-type cells and transitional epithelium , on the surface of the polyps , the absence of lesions at previous cystoscopies , the coexistence of cystitis cystica glandularis ( a metaplastic lesion ) , and the older age group of our patients suggest that the prostatic-type epithelium in the polyps of urethra and urinary bladder is an acquired lesion , most likely a metaplastic response of transitional epithelium , which embryologically was multipotential .
C0010702
cystoscopies
C0005682
urinary bladder