Renal tubular necrosis due to shock: Light‐and electron‐microscope observations

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Abstract
The renal biopsy findings in a 76 yr-old woman suffering grom anuria due to acute tubular necrosis are described. The glomeruli were normal on light- and electron microscopy. Immunofluorescent studies failed to reveal any fibrin or immunoglobulins in the glomerular capillaries. Extensive focal areas of necrosis were seen in the tubular epithelium often exposing the lumen of the tubule directly to the tubular basement-membrane. In some areas necrotic cells lay adjacent to normal or near normal cells. The proximity of the necrotic tubular epithelium to the oedematous interstitial tissue and the peritubular capillaries, together with the finding of normal glomeruli is compatible with the theory of back diffusion as a mechanism for the oliguria.

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