Assertion: gangrene's cause | /r/HasProperty | bladder cancer
Facets:
Source sentences:
text: With regards to the genitourinary tract, urethral strictures and transurethral instrumentation are the most frequent etiologies; other causes include surgery of the penis and scrotum, transrectal prostate biopsy, urethral calculi, bladder cancer infiltrating the urethra, and phlebitis of dorsal penis vein [