Rpt CT following insertion of urinary catheter at 2100 hours
Following catheter insertion and 5 hour delay the mass has "disappeared" with 4 litres of urine in the catheter bag. The bladder is collapsed and markedly thick-walled. Note contrast in the dilated left renal collecting system down to the bladder, but poorly functioning right kidney due to chronic backflow obstruction.
Cause is presumed to be bladder outlet obstruction (possible due to the prostate or other urethral stricture). Note the so-called stasis bladder stone.