Entamoeba Histolytica Invasion and Metastasis of the Liver and Other Organs: A Case Report

Introduction: Entamoeba histolytica is an invasive enteric protozoan. Infection typically begins with the ingestion of mature, quadrinucleated cysts found in fecally contaminated food or water. Entamoeba hystolytica invasion can result to the metastasis of the Liver and other organs. This condition is the result of the migration of the trophozoites hematologically through the portal vein to some distant organs. Adherence to the colonic mucus layer and colonization is through the Gal/GalNAc lectin, which targets galactose and N-acetyl-D- galactosamine residues found on D-linked sugar side chains of mucins. Mammals that do not possess N-acetyl-D-galactosamine or N-terminal galactose are resistant to trophozoite adherence, providing some degree of immunity against invasive disease.

Materials and Methods: Here is a case of a report of a 47-year old female, with the complaint of abdominal pain at the right upper quadrant with jaundice and a weight loss of about 12kg within a period of 1-month. For the purpose of the Abdomen/Pelvis Computer Tomographic (CT) scan, the contiguous 5mm axial helical image slices of the tissues of the lower chest, abdomen and pelvis were obtained from the level of the main pulmonary arteries to the level of the lesser femoral trochanters before and after bolus intravenous injection of 100mls of Ultravist 370. Multiplanar reconstructed images as well as source images viewed in various window settings were employed in analysis. This CT-Scan was carried out by Prof. S. O. Mgbor, and Dr. Onuh, A. C. of Hands Clinics, (Computer Tomography department).

Results: the 47 years old Patient was diagnosed of Amoebic Liver disease: a disease caused by the invasion of Entamoeba hystolytica, this attests that E. hystolytica is capable of causing liver metastases. This infection on the liver was a result of the trophozoites adhering to the colonic epithelium and spread hematologically from the liver to other distant organs.

Conclusion: This case report reveals the detrimental effect of Entamoeba hystolytica invasion on viscera organs particularly the liver, which resulted to organs metastases. Furthermore, Entamoeba histolytica invasion when not detected on time could be fatal as reviewed in the case study, as the said patient eventually died as a result of ruptured liver due to fatal nature of the invasion.

  Keywords: Entamoeba histolytica, organs metastases, secondary invasion