INTESTINAL AND ATRIAL AMEBAE Flashcards
- only pathogenic and invasive intestinal and atrial amebae.
-CYST: 10-20 um and spherical with 1-4 nuclei
TROPHOZOITES: Bull`s eye karyosome
- ingest RBCs
Entamoeba histolytica
- also known as MASHKOVSKII and BANGLADESH
- identical to E. histolytica but NON PATHOGENIC
-CYST: 10-20 um and spherical with 1-4 nuclei
Entamoeba dispar
- small race of E. histolytica
- CYST: 5-10 um and spherical
Entamoeba hartmanni
Elongate bars with bluntly rounded
ends described as CIGAR SHAPED
Entamoeba histolytica
Entamoeba dispar
Entamoeba hartmanni
- CYST: 10-33 um; spherical or oval & up to 8 nuclei (mature cyst)
TROPHOZOITES: 10-50um.
K: Large and eccentric &
PC: Irregular and coarse
Entamoeba coli
- “cross-eyed cyst”; Dward internal slug trophozoites
CYST: 5-14 um; oval; with 4 nuclei
TROPHOZOITES: 6-15um with K: large, irregular; blot like
Endolimax nana
- uninucelated; large glycogen mass and IODOPHILIC
CYST: 5-18um, irregular with 1 nuclei
TROPHOZOITES: 6-20 um with “basket nucleus” and karyosome is central or peripheral surrounded with ACHROMATIC granules
Iodamoeba butschlii
- ingest WBC
NO CYST
TROPHOZOITES: 10-20um / K: central and distinc
Entamoeba gingivalis
- uninucleated
- parasite ofpigs and monkeys
-NON IODOPHILIC
Entamoeba polecki
trophozoites is found in liquid stool that undergoes ____
Binary fission
cyst is found in formed stool that undergoes ____
Encystation
incubation period of TWO to FIVE days; presents with bloody diarrhea and abdominal pain
Acute/ symptomatic
patients are considered as CARRIERS or CYST PASSERS ; stool is soft to well-formed
Chronic/ asymptomatic
Extraintestinal Amebiasis
Most common site ___________; may hematogenously spread to other organs
Liver
