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Coronary atherosclerosis is often overlooked during autopsies, with many significant lesions missed. This study highlights the need for thorough examination of coronary arteries to accurately diagnose heart disease.
Area of Science:
- Cardiovascular Pathology
- Atherosclerosis Research
Background:
- Coronary heart disease (CHD) diagnosis relies on accurate assessment of coronary atherosclerosis.
- Routine autopsy procedures may miss significant atherosclerotic lesions in coronary arteries.
Purpose of the Study:
- To investigate the prevalence and characteristics of "grossly neglected" coronary atherosclerosis.
- To analyze the distribution of neglected atherosclerotic plaques across age groups.
- To emphasize the importance of examining specific branch vessels for accurate clinical correlation.
Main Methods:
- Gross inspection and light microscopy of coronary arteries from 640 accident victims (aged 1-50).
- Analysis of atherosclerotic plaques, intimal necrotic areas, and microthrombi.
- Examination of a subsample (32 patients aged 52-79) with confirmed CHD.
Main Results:
- A significant proportion (32%) of 809 atherosclerotic plaques were grossly neglected.
- Numerous intimal necrotic areas and microthrombi were identified but not visible to the naked eye.
- Neglected lesions were found in branch vessels not typically examined during routine autopsies.
Conclusions:
- Coronary atherosclerosis is frequently underestimated due to inadequate autopsy examination.
- Thorough inspection of main and branch coronary arteries is crucial for understanding CHD natural history.
- Improved detection methods are essential for accurate anatomo-clinic-cardioangiographic and ECG correlations in CHD.
Abstract:
A study of the natural history of coronary heart disease by means of gross inspection and light microscopy, carried out on 640 subjects aged 1-50 years who had died of violent accidents, revealed a grossly neglected coronary atherosclerosis. It included fibromuscular plaques, intimal necrotic areas and incorporated microthrombi present in the longitudinally opened main coronary arteries but not visible to the naked eye, and some atherosclerotic lesions visible to the naked eye but present in branch vessels unopened or not removed during routine autopsy. There were approximately 500 grossly neglected intimal necrotic areas and approximately 120 grossly neglected incorporated microthrombi; from a total of 809 atherosclerotic plaques 261 (32%) were grossly neglected. The topographic distribution and the number of neglected and non-neglected atherosclerotic plaques, in successive age groups, were analyzed. A small subsample, including 32 patients 52-79 years old, dead of coronary heart disease, was used to demonstrate the importance of the detection of obstructive atherosclerotic lesions in some usually unopened or not removed branch vessels for a realistic anatomo-clinic-cardioangiographic and ECG correlation.