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PARASITOLOGY > LUNG, INTESTINAL FLUKE > Flashcards

LUNG, INTESTINAL FLUKE Flashcards

1
Q

(Lung fluke, oriental lung fluke)

A

Paragonimus westermani

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2
Q

Paragonimus westermani . Other species

A

Paragonimus philippinensis (humans), Paragonimus siamensis (cats),
Paragonimus miyazaki (mammals) (Japan), Paragonimus skrjabini (dogs, cats, humans)
Paragonimus hueitungensis (felines) (China), Paragonimus heterotrema (mammals)
(China, Southeast Asia)

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3
Q

Egg: it is oval in shape, yellowish brown, bile-stained, thick egg walls

A

Paragonimus westermani

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4
Q

Paragonimus westermani. Egg. Size

A

measures 80-118 um in length and 48-60 um in width

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5
Q

Paragonimus westermani. Adults. color and resembles ?

A

reddish brown in color and resembles
coffee beans

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6
Q

Paragonimus westermani. Adults. Size

A

measures 7.5-12 mm in length
and 4-6 mm in width

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7
Q

Paragonimus westermani. Eggs per day

A

9000-18000 eggs per day

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8
Q

Paragonimus westermani. the infective stage to humans

A

Metacercaria:

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9
Q

Paragonimus westermani. 1st Intermediate hosts:

A

SNAILS (Antemelania asperata, Antemelaniadactylus/Brotia asperata, Sulcospira quangtriensis, Paludomusspp

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10
Q

Paragonimus westermani. 2nd Intermediate hosts:

A

CRAB (Sundathelpusa philippina formerly Parathelpusa grapsoides) and CRAYFISH (superfamilies Astacoidea and Parastacoidea)

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11
Q

Human infection with ______ occurs by eating inadequately cooked or pickled crab or crayfish that harbor
metacercariae of the parasite

A

P. westermani

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12
Q

P. westermani, Definitive host:

A

Man

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13
Q

P. westermani. First intermediate host

A

Fresh water snail, belonging to the genera
Semisulcospira and Brotia.

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14
Q

Paragonimus westermani. Second intermediate host

A

Fresh water crab or cray fish

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15
Q

Paragonimus westermani. Infective form

A

Metacercariae encysted in crab or cray fish

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16
Q

Paragonimus westermani.Mode of infection:

A

Man acquires infection by eating undercooked
crab or cray fish containing metacercariae.

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17
Q

P. westermani .mostly are gastrointestinal symptoms: abdominal pain, fever, cough, eosinophilia, urticaria, internal organ complications including hepatosplenomegaly

A

Acute phase:

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18
Q

P. westermani. * it mainly involves respiratory complications and it usually produces a
dry cough that progresses into rust-colored sputum with foul fish odor
most pronounced in morning (misdiagnosis of tuberculosis)

A

Chronic phase

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19
Q

P. westermani. Chronic phase can cause ___ lesions which can progress to fibrosis

A

granulomatous lesions

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20
Q

parasite that can cause ectopic infection, it can also cause jacksonian epilepsy (focal
partial seizure)

A

P. westermani

21
Q

P. westermani. most serious complication

A

cerebral involvement

22
Q

P. westermani. Diagnostic stage

A

Detection of fertilized eggs in sputum (gold
standard)/stool/pleural effusions

23
Q

In diagnostic stage of P. westermani. How many % of NaOH is added into sputum

A
  • 3% NaOH
24
Q

P. westermani. CT Scan and MRI shows

A

a “grape cluster” or “soap bubble calcifications”

25
Q

P. westermani. * CT scan/MRI: shows a “grape cluster” or “soap bubble calcifications” mostly on ____ part of brain

A

posterior part of brain

26
Q

Giant intestinal
fluke

A

Fasciolopsis buski

27
Q

Fasciolopsis buski. Characte
risitic

A

Largest fluke of
man

28
Q

Garrison’s fluke

A

Echinostoma
ilocanum

29
Q

Von Selbold fluke, Dwarf Intestinal
fluke

A

Heterophyes heyerophyes

30
Q

DEADLIEST
Smallest fluke of
man

A

Heterophyes heyerophyes

31
Q

Yokogawai fluke

A

Metagonimus yokogawai

32
Q

Attenuated at both ends, circumoral disk
with horseshoe- shaped crown of 49-51 hooks

A

Echinostoma ilocanum

33
Q

Resembles H. heterophyes, scaly spines distributed over the anterior end

A

Metagonimusyokogawai

34
Q

Fasciolopsis buski. 1st Intermediate host

A

Snail
(Segmentina, Hippeutis)

35
Q

Fasciolopsis buski. 2nd Intermediate host

A

Aquatic plants
Trapa natans (water caltrop)
Eliocharis tuberos (water chestnut)
Zizania (water bamboo)

36
Q

Echinostoma ilocanum. 2nd Intermediate host

A

Snail
Pila luzonica (kuhol)
Vivipara angularis(suso)

37
Q

Echinostoma ilocanum. 1st Intermediate host

A

Snail ( Hippeutis, Gyrraulus)

38
Q

Heterophyes heyerophyes. 1st Intermediate host

A

Snail
(Pironella, Crithidia)

39
Q

Heterophyes heyerophyes. 2nd Intermediate host

A

Fish
Acanthagobius

40
Q

Metagonimus yokogawai. 1st Intermediate host

A

Snail
( Thiara, Semisulcospira, Libertina)

41
Q

Metagonimus yokogawai. 2nd Intermediate host

A

Fish
Odontobutis obscurus
Salmo perryi

42
Q

Fasciolopsis buski. Def host

A

Dogs, Swine, Man

43
Q

Echinostoma ilocanum. def host

A

Man, Dogs, Cats

44
Q

Heterophyes heyerophyes. Def host

A

man

45
Q

Metagonimus yokogawai. Def host

A

Man

46
Q

Egg. Immature * identical with F. hepatica but
larger and slightly convex operculum

A

Fasciolopsis buski

47
Q

Egg. Immature * ovoid, straw colored with
small operculum

A

Echinostoma ilocanum

48
Q

Egg. Mature *Indistinguishable
with Metagonimus

A

Heterophyes
heyerophyes

49
Q

Egg. Mature *Indistinguishable with Heterophyes

A

Metagonimus yokogawai

PARASITOLOGY (15 decks)

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