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Flashcards in Micro - Parasitology Deck (24)
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1

A man bitten by a tsetse fly has lymphadenopathy, fever, somnolence, and coma. Blood smear is shown here. What is the diagnosis?

African sleeping sickness

2

What are the two laboratory diagnostic tests for amebiasis?

Serologic studies and stool examination for trophozoites or cysts; red blood cells in the cytoplasm of entamoeba

3

An AIDS patient presents with severe diarrhea. A stool sample shows cysts on acid-fast stain. Diagnosis?

Cryptosporidium

4

A camper with diarrhea presents with foul-smelling diarrhea. You see trophozoites and cysts in the stool. Diagnosis and treatment?

Giardia lamblia; treatment is metronidazole

5

A patient has hemolytic anemia and fever after a tick bite. On blood smear there are "Maltese cross" forms. What is the diagnosis?

Babesiosis

6

How is the diagnosis of malaria made?

Blood smear, trophozoite ring form, and red blood cell schizont with merozoites

7

Praziquantel is used to treat diseases caused by which helminths?

Most of the cestodes and trematodes: Taenia solium, Diphyllobothrium latum, Schistosoma, Clonorchis sinensis, and Paragonimus westermani

8

Which helminthic infections are treated with mebendazole or pyrantel pamoate?

Ancylostoma duodenale (hookworm), Ascaris lumbricoides (giant roundworm), and Enterobius vermicularis (pinworm)

9

Ivermectin is used to treat diseases caused by which helminths?

Strongyloides stercoralis and Onchocerca volvulus

10

Diethylcarbamazine is used to treat diseases caused by which helminths?

Loa loa, Toxocara canis, and Wuchereria bancrofti

11

Which helminths infect humans via the direct penetration of the skin?

Schistosoma, Ancylostoma duodenale (hookworm), and Strongyloides stercoralis

12

Granulomas are formed in infections that are caused by which helminths?

Schistosoma and Toxocara canis

13

Chronic infection with Schistosoma haematobium can lead to what cancer?

Squamous cell carcinoma of the bladder

14

Which nematodes are transmitted by ingesting contaminated food?

Enterobius, Ascaris, and Trichinella (remember: you’ll get sick if you EAT these!)

15

Which nematodes are transmitted cutaneously?

Strongyloides, Ancylostoma, and Necator (remember: these get into your feet from SANd)

16

Name the parasite that causes brain cysts and seizures.

Taenia solium

17

Name the helminth that causes liver cysts.

Echinococcus granulosus

18

Name the helminth that causes vitamin B12 deficiency.

Diphyllobothrium latum

19

Name the helminth that causes biliary tract disease and is associated with cholangiosarcoma.

Clonorchis sinensis

20

Name the helminth that causes hemoptysis.

Paragonimus westermani

21

Name the helminth that causes portal hypertension.

Schistosoma mansoni

22

Name the helminth that causes hematuria and bladder cancer.

Schistosoma haematobium

23

Name the helminth that cause microcytic anemia.

Ancylostoma and Necator

24

Name the helminth that causes perianal pruritus.

Enterobius