Amcebic abscess of the liver when not properly treated tends to increase in size and often ruptures into the adjacent tissues, viz, lung, pleura, peritoneum, pericardium or abdominal wall, and less commonly into the stomach, duodenum or hepatic flexure. An effusion may occur into the pleural or peritoneal cavities as a result of direct spread of the inflammation from the advancing abscess. Absc...