DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Surgical scar on the abdomen of a 69 year old man after ureterolysis. This procedure is undertaken when tissue around one or both ureters, the tubes that carry urine from the kidneys to the bladder, obstruct the flow of urine. During this operation biopsies were also taken from the abdominal lymph nodes to see if the cause of the blockage was malignant (cancerous).
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