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Brain abscess in HIV (seen as ring-enhancing brain lesions on CT/MRI) Toxoplasma gondii
bloating, flatulence, foul-smelling, fatty diarrhea (often seen in campers/hikers) Giardia lamblia
Trophozoites or cysts in stool Giardia lamblia
Bloody diarrhea (dysentery), liver abscess, RUQ pain Entamoeba histolytica
Trophozoites (with RBCs in the cytoplasm) or cysts (with multiple nuclei) in stool Entamoeba histolytica
Oocysts on acid fast stain Cryptosporidium
Liver abscess Entamoeba histolytica
Severe diarrhea in AIDS Cryptosporidium
Oocysts in cat feces, crosses placenta Toxoplasma gondii
Classic Triad: Chorioretinitis, hydrocephalus and intracraneal calcifications Toxoplasma gondii
Tachyzoite on biopsy Toxoplasma gondii
Rapidly fatal meningoencephalitis Naegleria fowleri
Swimming in freshwater lakes ; enters via cribriform plate Naegleria fowleri
Amoebas in spinal fluid Naegleria fowleri
Tsetse fly, a painful bite Trypanosoma brucei
Trypanosoma brucei treatment Suramin: blood­ borne disease Melarsoprol: CNS penetration
African sleeping sickness: enlarged lymph nodes, recurring fever, somnolence, coma Trypanosoma brucei
Trophozoite ring form within RBC, schizont containing merozoites Plasmodium
Severe; irregular fever patterns; parasitized RBCs occlude capillaries in brain (cerebral malaria), kidneys, lungs P. falciparum
When treating with Quinidine or Primaquine test for G6PD deficiency
"Maltese cross" Babesia
Ixodes Tick Babesia, Borrelia burgdorferi
Chagas' disease: dilated cardiomyopathy, megacolon, megaesophagus; predominantly in South America Trypanosoma cruzi
Reduviid bug ("kissing bug") Trypanosoma cruzi
Trypanosoma cruzi treatment Benznidazole or nifurtimox
Macrophages containing amastigotes Leishmania donovani
Sandfly Leishmania donovani
Leishmania donovani treatment Sodium stibogluconate
Vaginitis: foul-smelling, greenish discharge; itching and burning; Trichomonas vaginalis
Trophozoites (motile) on wet mount Trichomonas vaginalis
Strawberry cervix Trichomonas vaginalis
Trichomonas vaginalis Metronidazole for patient and partner (prophylaxis)
Created by: heidy39