Amebic liver abscess is caused by Entamoeba histolytica. This parasite causes amebiasis, an intestinal infection that is also called amebic dysentery. After an infection has occurred, the parasite may be carried by the bloodstream from the intestines to the liver.

Why amoebic liver abscess is common in right lobe?

Amebic liver abscess is caused by Entamoeba histolytica. This parasite causes amebiasis, an intestinal infection that is also called amebic dysentery. After an infection has occurred, the parasite may be carried by the bloodstream from the intestines to the liver.

What are the three types of liver abscess?

Types

  • Pyogenic liver abscess, which is most often polymicrobial, accounts for 80% of hepatic abscess cases in the United States.
  • Amoebic liver abscess due to Entamoeba histolytica accounts for 10% of cases.
  • Fungal abscess, most often due to Candida species, accounts for less than 10% of cases.

How many types of liver abscess are there?

Liver abscesses are classified into two main groups, pyogenic and amebic related to the etiological cause.

What is pyogenic liver abscess?

Pyogenic liver abscess is a pus-filled pocket of fluid within the liver. Pyogenic means producing pus. A liver abscess can develop from several different sources, including a blood infection, an abdominal infection, or an abdominal injury which has been become infected.

What is amebic liver abscess?

Amebic liver abscess is the most common extra-intestinal manifestation of the protozoan, Entamoeba histolytica. The life cycle involves consumption of fecally contaminated food and water, that reaches and penetrates the small intestine to enter the mesenteric vessels and finally the liver.

How do pyogenic and amebic liver abscess differ?

Amebic abscesses are more common in areas where Entamoeba histolytica is endemic, whereas pyogenic abscesses are more common in developed countries. Pyogenic abscess severity is dependent on the bacterial source and the underlying condition of the patient.

How is pyogenic liver abscess diagnosis?

Diagnosis of pyogenic liver abscess an abdominal ultrasound to locate an abscess. a CT scan with intravenous contrast, or injected dye, to find and measure the abscess. blood tests to look for signs of infectious inflammation, such as an increased serum white blood count and neutrophil level.

What are pyogenic bacteria?

Bacteria that cause pus are called pyogenic. Although pus is normally of a whitish-yellow hue, changes in the color can be observed under certain circumstances. Pus is sometimes green because of the presence of myeloperoxidase, an intensely green antibacterial protein produced by some types of white blood cells.

What is anchovy sauce pus?

Liver abscess aspirate is usually an odorless thick yellow-brown liquid classically referred to as “anchovy paste.” This liquid lacks white blood cells (WBCs) as a result of lysis by the parasite. Amebae are visualized in the abscess fluid in a minority of patients with amebic liver abscess (see the image below).

What are the clinical features of amebic and pyogenic liver abscess?

We evaluated the clinical features of 96 cases of amebic liver abscess and 48 of pyogenic hepatic abscess. Most patients with amebic abscess were young Hispanic males. Those with pyogenic abscess were older, without any ethnic predominance. Symptoms tended to be acute and localized to the right upper quadrant in amebic infection.

How are amoebic and Pyogenic abscesses diagnosed?

Presumptive diagnoses of amoebic (n = 471; 82%) vs.pyogenic (n = 106; 18%) abscess were based upon amoebic serology, microbiological culture results, and response to therapy. Patients with amoebic abscess were more likely to be young males with a tender, solitary, right lobe abscess (P = 0.012).

What is the incidence of pyogenic liver abscess?

The incidence of pyogenic liver abscess based on hospital admissions ranges from 0.029 to 1.47%(5) and 0.3 to 1.4% in autopsy studies (9). There is a decline in the incidence of pyogenic liver abscesses as well as a change in the relative frequency of pyogenic and amebic abscesses.

How common is jaundice in amoebic liver abscess?

Jaundice was more common among our patients with pyogenic abscess; previous studies have found jaundice to be relatively uncommon in patients with amoebic liver abscess (Ogden et al.1962; McDonald 1984; Conter et al.1986; Barnes et al.1987).