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American Journal of Pathology, Vol 78, 261-276, Copyright © 1975 by American Society for Investigative Pathology
REGULAR ARTICLES |
DB Jones and PM Iannaccone
In a series of 755 renal biopsies atheromatous emboli were found in biopsies of 8 men from 49 to 72 years of age. Unexplained recent deterioration of renal function was present in each. This previously unreported incidence of 8/755 biopsies is ascribed to the selection for biopsy of patients with unexplained decrease in renal function. Hypertension was a major feature in 6, hyperlipidemia in 2, a leaking aortic aneurysm in 1, carcinoma of the pancreas in 1, and chronic glomerulonephritis in 1 patient. Toluidine-blue-stained epoxy sections proved to be more effective in recognizing small emboli than paraffin sections. Ultrastructural observation concerned a) early lesions (eg, fresh emboli with endothelial distortion or injury), b) intermediate lesions (eg, histiocytic or giant cell reaction and intimal proliferation), and c) later lesions (eg, extraluminalization of the crystals eventually resulting in inert location in intimal stroma). Osmiophilic deposits on the crystal surfaces were myelin-form in structure and were felt to result from lysosomal action.
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