Liver abscess

Nature

A liver abscess is a mass filled with pus inside the liver. Common causes are abdominal conditions such as appendicitis or diverticulitis due to haematogenous spread through the portal vein. It can also develop as a complication of a liver injury.

Source: Wikipedia

Incidence 
Liver abscesses occur in persons who have had amoebic dysentry, frequently after returning in apparently fair health to a temperate region where dysentery does not occur.
Aggravated by 
Type 
(E) Emanations of other problems