Centrilobular necrosis of liver may be seen with?
## Core Concept
Centrilobular necrosis of the liver refers to a pattern of liver injury characterized by necrosis of hepatocytes in the centrilobular area, which is the region around the central vein of the liver lobule. This pattern is often associated with ischemia or toxic injury. The liver lobule is structurally and functionally divided into zones based on oxygen and nutrient supply from the hepatic artery and portal vein, with the centrilobular area being the most distant from these supplies.
## Why the Correct Answer is Right
The correct answer, , is associated with centrilobular necrosis because it reflects conditions or substances that cause ischemic or toxic damage predominantly to the centrilobular area. This area is more susceptible to damage from decreased oxygen delivery or direct toxic effects due to its relatively lower oxygen tension compared to the periportal area.
## Why Each Wrong Option is Incorrect
* **Option A:** This option is incorrect because it does not accurately represent a condition associated with centrilobular necrosis. Without specific details on what represents, it's hard to provide a precise reason, but generally, centrilobular necrosis is linked to specific drugs, toxins, or conditions that impair liver blood flow or cause direct hepatotoxicity.
* **Option B:** Similarly, this option is incorrect as it presumably does not accurately describe a cause of centrilobular necrosis. The details of are not provided, but conditions causing centrilobular necrosis typically involve ischemia, certain drugs, or toxins.
* **Option D:** This option is incorrect because it presumably represents an alternative that does not accurately describe a condition or cause of centrilobular necrosis.
## Clinical Pearl / High-Yield Fact
A classic cause of centrilobular necrosis is carbon tetrachloride (CCl4) poisoning. CCl4 is metabolized by cytochrome P450 in the liver to a toxic metabolite that causes lipid peroxidation and necrosis, predominantly in the centrilobular area due to the higher concentration of cytochrome P450 enzymes in this region. Another important cause is ischemia, which affects the centrilobular area first due to its lower oxygen tension.
## Correct Answer: C.