Percutaneous Renal Cyst Puncture: Unusual Results in 2 Cases

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Abstract
Percutaneous puncture and aspiration were used successfully in 2 cases: 1) a calcified benign renal cyst and 2) a grossly infected benign renal cyst. Percutaneous aspiration might be a useful procedure in either calcified or infected renal cyst. If percutaneous puncture is contemplated in a calcified ring lesion, preliminary angiography is strongly recommended to exclude possible renal artery aneurysm or arteriovenous malformation.