Cestode

Question 1

Broad or fish tapeworm

Answer 1

D latum

Diphyllobothriasis

Question 2

Largest human tapeworm

Answer 2

D latum

Question 3

2 elongated sucking grooves
Bothria
No circular suckers or hooks

Gravid uterus forms rosettes

Answer 3

D latum

Question 4

Eggs Oval, operculum at one end

Answer 4

D latum

Question 5

Longest and largest of tapeworms
rosette appearance
Sucking groove of scolex
Oval eggs with lid-like opening (operculum)

Answer 5

D latum

Question 6

D latum transmission

Answer 6

Ingestion of raw or undercooked fresh water fish

Question 7

D latum definitive host

Where parasite reaches its maturity

Answer 7

Human

Question 8

D latum intermediate host

Organism that supports immature, nonrepro form

Answer 8

Copepod 1st intermediate

Fish 2nd intermediate

Question 9

Little damage in gut causing diarrhea and pain but may cause this type of anemia

Answer 9

Pernicious anemia

B12 def

Question 10

D latum Dx

Answer 10

Eggs or proglottids

Question 11

D latum Tx

Answer 11

Praziquantel

Question 12

Increases permeability of worm membrane

Influx of calcium

Answer 12

Praziquantel

Question 13

Ca influx from Praziquantel lead to

Answer 13

worm spasm and paralysis

Question 14

D latum life cycle

Answer 14

Human passes egg to feces
Copepod ingests eggs
Fish ingests eggs
Human ingests eggs

Question 15

D latum causes

Answer 15

Megaloblastic anemia

Pernicious anemia

Question 16

Dog tapeworm

Hydatid worm

Answer 16

Echinococcus granulosus

Question 17

Scolex: 4 suckers
Double circle of hooks

Adult worm only 3 proglottids

Answer 17

Echinococcus granulosus

Question 18

extra-intestinal tapeworm infection

Answer 18

Unilocular hydatid cyst

Question 19

Most important definitive host of echinococcus granulosus

Answer 19

Dog/sheep

Question 20

Humans in e granulosis are only

Answer 20

dead-end/accidental host

Question 21

E granulosus is usually found in

Answer 21

rural areas

grazing areas

Question 22

Dog eats entrails (liver) of sheep -> hydatid cyst -> adult worm in gut -> eggs passed in feces -> sheep (and human)

Answer 22

E granulosis

Question 23

Endemic in sheep raising areas

Ingest entrails of sheep

Answer 23

E granulosus

Question 24

E granulosus affects lungs as

Answer 24

E multilocularis

Question 25

E granulosus spleen cyst

Answer 25

E granulosus

Question 26

Most common cause of splenic abscess

Answer 26

Echinococcus

Question 27

Scolex is pyriform

Answer 27

E granulosus

Question 28

Protoscoleces

Answer 28

Hydatid sand

Question 29

Danger on rupture of hydatid cyst

Answer 29

Anaphylactic shock

Question 30

E granulosus Gold Standard Dx

Answer 30

UTZ

Question 31

E granulosus UTZ diagnostic feature

Answer 31

Water lily sign

Question 32

Hydatid cyst occurs 60% in

Answer 32

Liver | Spleen

Question 33

E granulosis Diagnostic intradermal test

Answer 33

Casoni skin test

Question 34

E granulosus Tx | Most effective

Answer 34

Surgical removal | Extirpation

Question 35

Drug for E granulosus

Answer 35

Albendazole | Mebendazole

Question 36

Taeniasis and Cysticercosis Pork tapeworm Scolex: 4 suckers, circle of hooks Gravid proglottid

Answer 36

Taenia solium

Question 37

Scolex of t solium

Answer 37

Cephalic rostellar hooklets

Question 38

Mature segments of t solium

Answer 38

Broader than long

Question 39

Pork tapeworm Rostellar hooks Broader than long

Answer 39

Taenia solium

Question 40

Ovum is spherical thick wall that that has STRIATIONS

Answer 40

Taenia solium

Question 41

Adult worm t solium

Answer 41

Taeniasis

Question 42

Larvae form of t solium

Answer 42

Cysticercosis

Question 43

If egg of t solium reaches brain

Answer 43

Neurocysticercosis

Question 44

Most common brain infection worldwide

Answer 44

Neurocysticercosis

Question 45

Undercooked pork infected with cysticerci -> humans larvae attach gut -> adult worm with proglottid -> pass in feces -> pigs May infect brain

Answer 45

T solium

Question 46

Muscle parasites

Answer 46

Trichinella spiralis | T solium

Question 47

Lab diagnosis of t solium

Answer 47

CT scan | Biopsy of infected tissue reveal calcified cysticerci

Question 48

Calcifications in brain

Answer 48

Toxoplasmosis MTB Schistosomiasis Neurocystercosis

Question 49

T solium Tx

Answer 49

Praziquantel for intestinal worms and cerebral cysticercosis (drug of choice) Surgical excision Albendazole

Question 50

Intestinal worm t solium Tx

Answer 50

Niclosamide

Question 51

Neurocystercosis trigerring inflammation -> seizure

Answer 51

Jacksonian march - focal seizure

Question 52

Superior tx for T solium Better penetration of CSF Give with

Answer 52

Albendazole Dexamethasone Better than praziquantel

Question 53

Beef tapeworm Taeniasis Scolex: 4 suckers, no hooks Absent cephalic hooklet Gravid proglottid: 15-20

Answer 53

Taenia saginata

Question 54

Humans infected by eating raw or undercooked beef containing larvae (cysticerci) Migrates to skeletal muscle

Answer 54

Taenia saginata

Question 55

T saginta intermediate host

Answer 55

Cattle

Question 56

T saginatum Definitive host

Answer 56

Human

Question 57

Cysticercosis does not occur

Answer 57

T saginata

Question 58

T saginata treatment

Answer 58

Praziquantel

Question 59

Small fox tapeworm Alveolar echinococcosis

Answer 59

Echinococcus multilocularis

Question 60

Dwarf tapeworm Entire worm - small 40 mm long No intermediate host Person to person most often asymptomatic Heavy infection weakness, headaches, anorexia, abdominal pain and diarrhea Tx Praziquantel

Answer 60

Hymenolepsis nana