HARR

Question 1

The incorrect match between organism and the appropriate diagnostic procedure is:

A. Onchocerca volvulus—examination of skin snips
B. Cryptosporidium spp.
—modified acid-fast stain
C. Enterobius vermicularis—routine ova and parasite examination
D. Schistosoma haematobium—examination of urine sediment

Answer 1

Enterobius vermicularis—routine ova and parasite examination

Question 2

In a patient with diarrhea, occasionally Entamoeba histolytica/E. dispar (four nucleated
cysts, no chromatoidal bars) are identified as being present; however, these cells, which
are misdiagnosed as protozoa, are really:

A. Macrophages
B. Polymorphonuclear leukocytes (PMNs)
C. Epithelial cells
D. Eosinophils

Answer 2

Polymorphonuclear leukocytes (PMNs)

Question 3

Charcot-Leyden crystals in stool may be associated with an immune response and are
thought to be formed from the breakdown products of:

A. Neutrophils
B. Eosinophils
C. Monocytes
D. Lymphocytes

Answer 3

Eosinophils

Question 4

Parasitic organisms that may be transmitted sexually do not include:

A. Entamoeba gingivalis
B. Dientamoeba fragilis
C. Trichomonas vaginalis
D. Diphyllobothrium latum

Answer 4

Diphyllobothrium latum

Question 5

Parasitic organisms that may be transmitted sexually do not include:

A. Entamoeba gingivalis
B. Dientamoeba fragilis
C. Trichomonas vaginalis
D. Diphyllobothrium latum

Answer 5

Diphyllobothrium latum