Increase in size of the liver below the level of the right costal margin. It occurs as congestive hepatomegaly in right sided heart failure and in cirrhosis, tumors of the liver which may include primary or mestastatic tumors, alcoholic hepatitis and venoocclusive disease.

It may also occur in Reidel's lobe which is a normal variant lobe of the liver, infections such as hepatitis, infectious mononucleosis, schistosomiasis, amebic abscess and hydatid cyst or in hematological conditions such as sickle cell disease, leukemia, lymphoma, and the hemolytic anemias.

Hepatic dullness may be absent in gas in the abdominal cavity  which lead to suspicion of ruptured viscus.

Roll over mouse to demonstrate hepatomegaly

 

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Percuss for area of hepatic dullness in hepatomegaly
 

 

 

 

 

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