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[Acute pulmonary infections at autopsy. A study of clinical and macroscopic diagnoses at autopsy compared with
1Patologisk anatomisk institut, Hjørring/Brønderslev Sygehus.
Abstract:
The clinical diagnoses and gross diagnoses of acute pulmonary infections were investigated for 100 consecutively performed hospital autopsies, and the diagnoses were compared with the histological findings. We found 34 cases of pneumonia and one case of tuberculosis. Of these, 29 infections represented principal diagnoses, i.e. as causative of or contributive towards death. The predictive values, the sensitivities and specificities were estimated. The predictive value for gross diagnostics was low with a value of 42.9% against 58.8% for clinical diagnostics. The sensitivities for both clinical diagnostics and gross diagnostics were about 30% and the specificities about 85%. The study shows that sampling for histology from all pulmonary lobes is essential for correct autopsy diagnoses, either from areas that appear to be infected on gross examination or from the peripheral parts. Furthermore autopsy performance is still of great value for clinical diagnostics and for medical statistics.
Insights
Autopsy findings reveal that clinical and gross diagnoses of acute pulmonary infections have low sensitivity and predictive value. Comprehensive histological sampling of all lung lobes is crucial for accurate diagnosis and improving patient care.
Area of Science:
- Pathology
- Pulmonary Medicine
- Forensic Medicine
Background:
- Acute pulmonary infections are a significant cause of mortality.
- Accurate diagnosis is essential for effective treatment and public health.
- Autopsy remains a critical tool for verifying diagnoses and understanding disease processes.
Purpose of the Study:
- To compare the accuracy of clinical and gross autopsy diagnoses of acute pulmonary infections with histological findings.
- To evaluate the sensitivity, specificity, and predictive values of these diagnostic methods.
- To determine the importance of comprehensive histological sampling in autopsy diagnoses.
Main Methods:
- Retrospective analysis of 100 hospital autopsies with acute pulmonary infections.
- Comparison of clinical diagnoses and gross pathological findings with detailed histological examination.
- Calculation of diagnostic accuracy metrics: predictive values, sensitivity, and specificity.
Main Results:
- Pneumonia was diagnosed in 34 cases and tuberculosis in one case.
- Clinical and gross diagnoses showed low sensitivity (approx. 30%) and predictive values (42.9%-58.8%).
- Specificities for both methods were relatively high (approx. 85%).
Conclusions:
- Histological sampling from all pulmonary lobes, including peripheral areas, is essential for accurate autopsy diagnoses.
- Autopsies retain significant value for validating clinical diagnoses and contributing to medical statistics.
- Improving diagnostic accuracy in pulmonary infections requires meticulous post-mortem examination.