Atheroma or Thrombus in Sudden Cardiac Death?

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SUMMARY

The discussion centers on the pathological features associated with sudden cardiac death in a 56-year-old man with critical stenosis in the left anterior descending artery. Participants analyze the options of thrombus and atheroma, ultimately concluding that the correct answer is atheroma due to the presence of a lipid core and fibrous cap, indicating a plaque rather than an acute thrombus. The question emphasizes the importance of understanding histopathology in differentiating between these conditions.

PREREQUISITES
  • Understanding of coronary artery disease and its pathophysiology
  • Knowledge of histopathological features of atheromas and thrombi
  • Familiarity with acute coronary syndrome and its implications
  • Basic principles of autopsy findings related to cardiac events
NEXT STEPS
  • Study the histopathology of atheromas and thrombi in detail
  • Research the role of lipid cores in plaque stability and rupture
  • Explore the mechanisms of acute coronary syndrome and its clinical presentations
  • Review autopsy protocols for sudden cardiac death cases
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Medical students, pathologists, cardiologists, and healthcare professionals involved in the study of cardiac pathology and sudden cardiac death.

missy75
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hi all,
im new here. this may be a silly question, but I am going through exam quetions (MCQs) and wondered if you could help me with this one.

A 56 yr old man with a history of angina dies suddenly. An autopsy reveals critical stenosis in the left anterior descending artery. The lesion has a lipid core with a fibrous calf. What is the most likely pathological feature?

A - thrombus
B - atheroma
C - embolus
D - carcinoma in situ
D - infective embolus

I think the answer is A (thrombus), because the thrombus seems to be the cause of this man's death (acute coronary syndrome). I'm thrown off by the words "pathological feature" - it makes me consider anser B (atheroma) because an atheroma would initiallyhave to be present, then rupture to form the thrombus.

Please comment on why you think I am wrong/right.

Thank you!
 
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missy75 said:
I'm thrown off by the words "pathological feature" - it makes me consider anser B (atheroma) because an atheroma would initiallyhave to be present, then rupture to form the thrombus.

Please comment on why you think I am wrong/right.

Thank you!

Why do you think it's a thrombus? What would you expect in a 'tissue' prep of a thrombus? What about an atheroma? In fact, a fatal event would likely be due to a combination of both, with a thrombus closing a lumen already partially blocked by an atheroma. What does the histopathology describe? I think that's what the question is asking.
 
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thanks, I've changed my answer to atheroma now. The lipid core and fibrous calf hints at this, and there is no mention of a blood clot/evidence of rupture of the plaque.