What is Mallory Denk bodies?

Mallory bodies (MB), also known as Mallory-Denk bodies (MDB), are cytoplasmic hyaline inclusions of hepatocytes, once thought to be specific for alcoholic hepatitis now occur in other liver diseases which include nonalcoholic steatohepatitis (NASH), cholestatic liver diseases, primary biliary cirrhosis (PBC) and …

What causes Mallory Denk bodies?

A variety of conditions and drug exposures can lead to Mallory body formation, including excess alcohol ingestion, nonalcoholic steatohepatitis (NASH), exposure to drugs such as amiodarone in humans and exposure to ethanol, dieldrin, griseofulvin, copper, diethylnitrosamine, 3–5-diethoxy-carbonyl-1,4 dihydrocollidine.

What are Mallory’s hyaline?

Mallory bodies (Mallory hyaline) are irregular, ropelike eosinophilic intracytoplasmic strings that represent aggregates of cytokeratin intermediate filaments (cytokeratins 8 and 18). The cytokeratins form a filamentous support network within the hepatocytes.

Where are Mallory bodies found?

Mallory bodies are classically found in the livers of people suffering from alcohol-induced liver disease and were once thought to be specific for that. They are most common in alcoholic hepatitis (prevalence of 65%) and alcoholic cirrhosis (prevalence of 51%).

What is Lennox cirrhosis?

Medical Definition of Laennec’s cirrhosis : hepatic cirrhosis in which increased connective tissue spreads out from the portal spaces compressing and distorting the lobules, causing impairment of liver function, and ultimately producing the typical hobnail liver. — called also portal cirrhosis.

How is alcoholic hepatitis diagnosed?

A liver biopsy is a procedure to remove a small sample of liver tissue for laboratory testing. A liver biopsy is commonly performed by inserting a thin needle through your skin and into your liver. Your doctor will conduct a physical examination and ask about your current and past alcohol use.

What drugs can trigger autoimmune hepatitis?

Drugs. Medications that typically cause autoimmune hepatitis include minocycline, nitrofurantoin, hydralazine, methyldopa, statins, fenofibrate, alpha and beta interferon, infliximab and etanercept.

What are Mallory bodies?

Mallory bodies are damaged intermediate filaments within the liver cells. Mallory bodies are classically found in the livers of people suffering from alcohol-induced liver disease and were once thought to be specific for that. They are most common in alcoholic hepatitis ( prevalence of 65%) and alcoholic cirrhosis (prevalence of 51%).

What is Mallory’s hyaline?

In histo pathology, a Mallory body, Mallory-Denk body, and Mallory’s hyaline, is an inclusion found in the cytoplasm of liver cells. Mallory bodies are damaged intermediate filaments within the liver cells.

What is the prevalence of Mallory bodies in Wilson disease?

They are a recognized feature of Wilson’s disease (25%), primary biliary cirrhosis (24%), non-alcoholic cirrhosis (24%), hepatocellular carcinoma (23%) and morbid obesity (8%), among other conditions. However, it has also been reported in certain other unrelated conditions. Mallory bodies are highly eosinophilic and thus appear pink on H&E stain.