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Etiologic and prognostic significance of isolated acute renal hypoxic change (so-called tubular necrosis or shock kidney) in kidney transplants.

20 biopsies were studied in order to determine whether or not the pathologist is able to predict on morphological grounds the etiology and prognosis of acute renal hypoxic change in renal transplants. We concluded that: 1) Intertubular blood stasis seems to be pathognomonic of peripheral vascular rejection and/or renal artery thrombosis. 2) A focal distribution of acute tubular luminal dilatation suggests peripheral vascular rejection. 3) The finding of lymphatic casts suggests the presence of ureteric obstruction. 4) Linear fluorescent staining of the peripheral glomerular basement membrane appears to be due to leakage of plasma proteins in the presence of endothelial damage. 5) The histological distinction between camouflaged rejection and genuine shock kidney is impossible in a biopsy. 6) The precise cause of acute renal hypoxic change and the prognosis of kidney transplants with this alteration often cannot be determined.