In myocardial infarction the infarct acquires hyperemic rim with an yellow centre at: (A) 3-7 days, (B) 10-20 days, (C) 7-14 days, (D) 1-2 hours
Answer is A. 3 – 7 days Findings
Gross examination at border
Softening yellow-tan center Histopathology
(light microscopy)
Beginning of disintegration of dead muscle fibers
Necrosis of neutrophils
Beginning of macrophageremoval of dead cells at border