Fecal Artifacts

Question 1

Non-pathogenic component of fecal sample, but may be an indication of a disease

Answer 1

Fecal artifacts

Question 2

“fecal confusers”

Answer 2

Fecal artifacts

Question 3

Fecal Components

Answer 3

• Undigested food
• Digestive by-products
• Human cells
• Secretions from digestive tract
• Microorganisms

Question 4

What does pollen resemble?

Answer 4

Taenia and other helminth eggs

Question 5

Has little to no internal structures and lacks 6-hooked oncosphere lack of embryo wall

Answer 5

Pollen

Question 6

• Contained within sac
• Thick-shelled
• Has glycogen

Answer 6

Vegetable cells

Question 7

Shape and size of vegetable cells

Answer 7

Polygonal and flattened; larger sizes compared to helminth eggs

Question 8

What does vegetable cells resemble?

Answer 8

Helminth eggs

Question 9

Describe the interior portion of the vegetable cell

Answer 9

Unorganized and contain large vacuole

Question 10

What does vegetable spirals resemble?

Answer 10

Tapeworms and helminth larva

Question 11

Discrepancy between vegetable spirals and larva

Answer 11

Lacks head or tail region

Question 12

Plant/hair fiber is often confused with _____

Answer 12

Helminth larva (hookworms and Strongyloides)

Question 13

Lacks head or tail region and has a refractile center

Answer 13

Plant/hair fiber

Question 14

Normally occurring if sample is stored for a long time

Answer 14

Yeast

Question 15

Normal size of a yeast

Answer 15

4-8 micrometer

Question 16

Yeast is often confused with _____

Answer 16

Cryptosporidium spp., Cyclospora spp., microsporidia, helminth eggs, or protozoan cysts

Question 17

The presence of branching _____ may be and indication of pathogenicity of the yeast present (Candida spp.) and should be reported

Answer 17

pseudohyphae

Question 18

_____ causes irritation to the inguinal region of the immunosuppressed patients and may lead to secondary bacterial infection

Answer 18

Candida spp.

Question 19

What does starch cells/granules resemble?

Answer 19

E. hartmanni & E. nana

Question 20

Iodine and starch attract and creates the _____ (due to bile present)

Answer 20

golden appearance

Question 21

Stain of undigested starch

Answer 21

blue-black

Question 22

Stain of partially digested strach

Answer 22

red/pink

Question 23

Protistan parasites of crayfish

Answer 23

Beaver bodies

Question 24

Beaver bodies are also known as _____

Answer 24

Corpora parasitica

Question 25

True or false. Beaver bodies have no clinical signifiance

Answer 25

True

Question 26

What does beaver bodies resemble?

Answer 26

Helminth ova

Question 27

Fat globules are often confused as

Answer 27

E. hartmanni and E. nana

Question 28

Presence of excess fecal fat

Answer 28

Steatorrhea

Question 29

Normal samples contain ___ small droplets of fat globules, <___ micrometer in diameter per HPO

Answer 29

100, 4

Question 30

Does not indicate pathogen but can indicate diseases such as cystic fibrosis

Answer 30

Muscle fiber

Question 31

Muscle fibers may be confused as _____

Answer 31

Tapeworm proglottid

Question 32

Presence of too much muscle fibers

Answer 32

Creatorrhea

Question 33

Seen in improperly prepared wet mounts/smear

Answer 33

Air bubbles

Question 34

Mistaken for protozoan trophozoites

Answer 34

WBC

Question 35

Why are WBC mistaken as protozoan trophozoites?

Answer 35

They are mononucleated

Question 36

* Product of eosinophils

Answer 36

Charcot Leyden Crystals

Question 37

Slender crystals with pointed ends “diamond-shaped”

Answer 37

Charcot Leyden Crystals

Question 38

Charcot Leyden Crystals are stained _____ with trichrome stain

Answer 38

red-purple

Question 39

Charcot Leyden Crystals may indicate _____

Answer 39

hypersensitivity/allergic reaction and parasitic helminth infections

Question 40

Epithelial cells look like _____ but lack the typical interior structures of it

Answer 40

Amebic trophozoites

Question 41

Confused as ciliates

Answer 41

Detached ciliary tufts