Severn Bore Effect

A proposal which seeks to explain medullary scarring in patients with chronic pyelonephritis in absence of infection. It was proposed by Lord Rosenheim, who in a 1963 review in the British Medical Journal, hypothesized whether the scarring could arise from unattentuated (due to ureteral dilation and vesicoureteral reflux) beating of fluid waves released during micturition against the caliceal surface, which he likened to the Severn Bore
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