Morphology of E. histolytica includes the trophozoite, precyst, and cyst forms which can have 1, 2, or 4 nuclei. Liver abscesses can develop when the infectious agents from an E. histolytica infection in the bowel are carried to the liver through the portal venous circulation, leading to seeding and formation of an amebic abscess in the liver.

11. Morphology
• Different form of E. histolytica;
• 1- trophozoite
• 2- precyst
• 3- cyst(1, 2, 4 nuclei)

16. Liver abscess

17. This is an amebic abscess of liver. Abscesses may arise in liver when there is
seeding of infection from the bowel, because the infectious agents are carried to
the liver from the portal venous circulation.