JOHN BAVOSI / SCIENCE PHOTO LIBRARY JOHN BAVOSI / SCIENCE PHOTO LIBRARY
Urine retention. Illustration of an enlarged male bladder caused by acute retention of urine. At upper centre is the enlarged bladder (red). Two ureter tubes (white, upper left and right) pass urine from the kidneys to the bladder. At lower centre is the prostate gland (pink); a pair of seminal vesicles (white) are above the prostate; tubes of the vas deferens are seen above the seminal vesicles. Urine retention is the inability to empty the bladder or difficulty in doing so. It may be due to bladder stones, phimosis (tight foreskin), or prostate tumour. It may also occur in pregnancy. A catheter may be used to drain the bladder, before treating the underlying condition.
Model release not required. Property release not required.