A prospective survey of 322 autopsies of adults conducted some months after phenacetin was removed from a popular compound analgesic showed to reduction in the incidence of advanced or earlier forms of analgesic nephropathy from levels noted in an earlier survey. Apparently active nephropathy was seen in persons taking two different compound analgesics, neither now containing phenacetin. Crystals observed in early and intermediate analgesic nephropathy had no diagnostic significance and represented a tissue breakdown product.
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Burry et al. (1977) studied this question.
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