negative autopsy

An autopsy for which the gross and histologic findings do not provide an adequate cause of death; 2 to 5% of post-mortem examinations are deemed unascertained

negative autopsy

Pathology An autopsy for which the gross and histologic findings do not provide an adequate explanation for the cause of death. See Autopsy.
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A negative autopsy means that no natural or unnatural cause of death has been found during the morphological evaluation.