Autopsy: clinicopathological concordance and imaging techniques.

Area of Science:

• Medical diagnostics
• Pathology
• Medical imaging

Background:

• Clinical diagnosis and autopsy findings are crucial for understanding disease and improving patient care.
• Diagnostic accuracy has been a long-standing concern in medicine.
• The introduction of advanced noninvasive imaging techniques has raised questions about their impact on diagnostic accuracy.

Purpose of the Study:

• To evaluate the contribution of noninvasive imaging techniques to diagnostic accuracy.
• To compare clinical and post-mortem diagnostic agreement between two distinct time periods (1976 and 1986).
• To assess the role of autopsy in quality control and mortality statistics.

Main Methods:

• Retrospective analysis of 434 hospital autopsies (190 from 1976, 244 from 1986), excluding stillbirths, perinatal deaths, and forensic cases.
• Comparison of diagnostic agreement between clinicians and pathologists across the two study periods.
• Assessment of concordance rates for major conditions not identified as the immediate cause of death.

Main Results:

• Overall major diagnostic disagreement between clinicians and pathologists decreased from 55% in 1976 to 34% in 1986.
• Concordance for major conditions not classified as the immediate cause of death improved from 62% in 1976 to 75% in 1986.
• No significant improvement was observed in the clinical diagnosis of the immediate cause of death.

Conclusions:

• The autopsy remains indispensable for quality control and mortality/morbidity statistics.
• Noninvasive imaging may have improved the detection of major diseases but not the accuracy of the immediate cause of death.
• The rate of autopsy verification of the clinically suspected cause of death remains unacceptably low.