Fecal oral transmission of Entamoeba histolytica cyst
Most infection asymptomatic
Excystation in intestinal lumen
Trophozoites adhere and colonizes large intestine forming new cysts or invade the intestinal mucosa to cause colitis or abscesses
Liver abscess - 10x more common in men
Incubation period usually 2-4 weeks, but may range from a few days to years
Amebiasis
Infectious- shigella, salmonella, campylobacter, E. Coli.
Viral hepatitis
Noninfectious- Inflammatory bowel disease, ischemic colitis, diverticulitis, AV malformation.
Autoimmune hepatitis
Pyogenic abscess
Ischemic hepatitis
Aerobic: Escherichia coli, Klebsiella, Pseudomonas