Reversible vs Irreversible Injury

A 58-year-old man with chronic alcoholism presents with jaundice and hepatomegaly. Liver biopsy shows hepatocyte ballooning, lipid accumulation, and intact hepatocyte membranes. All of the following mechanisms contribute to this reversible hepatocyte injury EXCEPT:

A 48-year-old woman with severe hepatic cirrhosis due to chronic alcohol use presents with acute hepatic decompensation. Liver biopsy shows extensive hepatocyte ballooning with lipid accumulation, but nuclei remain intact with preserved chromatin pattern. A second biopsy 72 hours later shows hepatocyte collapse, nuclear fragmentation, and extensive apoptotic bodies. Which morphological feature best discriminates reversible from irreversible hepatocyte injury in this case?

At what point in the progression of cell injury does the transition from reversible to irreversible injury typically occur?

In a comparative study of cell injury patterns across different organs, which of the following is the most common morphologic hallmark of irreversible injury in all tissues?

A 58-year-old man with uncontrolled hypertension and diabetes mellitus presents with acute chest pain and dyspnea. ECG shows ST-segment elevation in anterior leads. Cardiac biomarkers are elevated. Which of the following is the most common cause of irreversible myocardial injury in acute myocardial infarction?