Diffuse Renal Disease

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Abstract
The results of ultrasound (US)-guided renal parenchymal cutting needle biopsies in 101 consecutive patients were reviewed. The biopsies were done with the automated Biopty device mounted with a 2.0-mm needle. One or 2 needle passes yielded sufficient material for histologic analysis in 94% (95/101). Three or more passes were required in 6% (6/101) to obtain an adequate specimen. Mesangioproliferative glomerulonephritis, IgA-nephropathy, nephrosclerosis, diabetic nephropathy, secondary amyloidosis, lupus nephritis, minimal change glomerulonephritis and interstitial nephritis accounted for 79% of the final histologic diagnoses. The high quality and quantity of the tissue specimens yielded a definitive histologic diagnosis in renal parenchymal diseases of unknown etiology. Four major complications occurred, but no deaths or loss of kidney function were recorded. US proved useful as a guide to suitable biopsy site and in the detection of clinically significant complications. Prebiopsy screening of coagulation variables did not seem to prevent complications. Special attention should be paid to post-biopsy clinical observation.

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