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Benign renal cyst, post-mortem. Benign (non cancerous) cyst (fluid-filled sac) in an excised kidney. The kidneys are abdominal organs that are part of the excretory system, producing urine by filtering the blood. Post-mortem examinations, also known as autopsies, are carried out to identify a cause of death, and to assess the health of a dead person's organs.
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