Fasciolopsis buski (intestinal fluke): - Transmission - Geography - Infection site

- Freshwater plants (Water Chestnuts) - Asia/India - Duodenum

Fasciolopsis buski (intestinal fluke) - Egg Diagnosis: - Size - Shape - Features (2) Identical to what other fluke?

- 100-150 um - Oval - Unshouldered operculum - Abopercular knob Fasciola hepatica (liver fluke)

Fasciola hepatica (liver fluke): - Transmission - Geography - Infection site (2)

- Freshwater pants (Water Cress) - Asia/Middle East - Bile ducts/Hepatic parenchyma

Fasciola hepatica (liver fluke): - Size - Shape - Features (2) Identical to what other fluke?

- 100-150 um - Oval - Unshouldered operculum - Abopercular knob Fasciolopsis buski (intestinal fluke)

Clonorchis sinesis/Opisthorchis spp. (liver fluke) - Egg Diagnosis: - Size - Shape - Feature (2)

- 30 um - Oval - Shouldered operculum - Small Abopercular knob

Trematodes (flukes) Flashcards by Filip Garrett

Trematodes:

-AKA

Flukes

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What are the Trematodes species (6)

Fasciolopsis buski
Fasciola hepatica
Clonorchis sinensis
Opisthorchis spp.
Paragonimus westermani
Schistosoma spp.

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Fasciolopsis buski (intestinal fluke):

Transmission
Geography
Infection site

Freshwater plants (Water Chestnuts)
Asia/India
Duodenum

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Fasciolopsis buski (intestinal fluke) - Diagnosis:
-Adult morphology

Point, but not conical, cephalad

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Fasciolopsis buski (intestinal fluke) - Egg Diagnosis:

Size
Shape
Features (2)

*Identical to what other fluke?

100-150 um
Oval
Unshouldered operculum
Abopercular knob

*Fasciola hepatica (liver fluke)

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Fasciola hepatica (liver fluke):

Transmission
Geography
Infection site (2)

Freshwater pants (Water Cress)
Asia/Middle East
Bile ducts/Hepatic parenchyma

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Fasciola hepatica (liver fluke):
-Complication

Fibrosis/Cirrhosis

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Fasciola hepatica (liver fluke) - Diagnosis:
-Adult morphology

Cephalic cone

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Fasciola hepatica (liver fluke):

Size
Shape
Features (2)

*Identical to what other fluke?

100-150 um
Oval
Unshouldered operculum
Abopercular knob

*Fasciolopsis buski (intestinal fluke)

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Clonorchis sinesis/Opisthorchis spp. (liver fluke):

Transmission
Geography

Freshwater fish

- Asia

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Clonorchis sinesis/Opisthorchis spp. (liver fluke):

-Infection (3)

Chronic Biliary infection

Biliary fibrosis
Cholangiocarcinoma

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Clonorchis sinesis/Opisthorchis spp. (liver fluke) - Diagnosis:
-Adult morphology

Snoutlike cephalad

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Clonorchis sinesis/Opisthorchis spp. (liver fluke) - Egg Diagnosis:

Size
Shape
Feature (2)

30 um
Oval
Shouldered operculum
Small Abopercular knob

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Paragonimus westermani:

-AKA

Oriental lung fluke

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Paragonimus westermani:

-Transmission

Crustaceans (undercooked)

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Paragonimus westermani:

-Infection

Lung infection with pneumonitis

Paragonimus westermani - Egg Diagnosis:

Sample type (2)
Size
Shape
Feature

Sputum/Stool

90 um
Oval
Shouldered operculum

Operculated Eggs - Differential Dx:

-Organisms (5)

Clonorchis sinensis
Diphyllobothrium latum
Paragonimus westermani
Fasciola Hepatica
Fasciolopsis buski

Operculated Eggs - Differential Dx - Size:

Clonorchis sinensis
Diphyllobothrium latum
Paragonimus westermani
Fasciola Hepatica/Fasciolopsis buski

Clonorchis sinensis (30 um)
Diphyllobothrium latum (60 um)
Paragonimus westermani (90 um)
Fasciola Hepatica/Fasciolopsis buski (120 um)

Operculated Eggs - Differential Dx:

-Shoulder (+) (2)

Clonorchis sinensis

- Paragonimus westermani

Schistosomiasis:

-AKA (2)

Bilharziasis

- Blood flukes

Schistosomiasis:

-Transmission

Snail infested water

Schistosomiasis:

-Life cycle (5)

Skin penetration via Fork Tailed Cercariae
Migrate through bloodstream
Mesenteric/Pelvic blood vessels
Releases eggs in bloodstream
Eggs lodge in small capillaries

Schistosomiasis:

-Where may eggs be found? (2)

Stool
Urine

*Eggs may penetrate bowel or bladder wall

Schistosomiasis - Clinical Stages: | -Acute

Circulating Immune Complexes | -Katayama fever

Schistosomiasis - Clinical Stages: | -Chronic

Reflects local tissue reaction to eggs

Schistosoma species. (4)

- S. mansoni - S. japonicum - S. haematobium - S. intercalatum

Schistosoma mansoni: - Infection sites (2) - Complications (3) - Eggs found

- Hepatic portal/Inferior mesenteric - Portal fibrosis, cirrhosis, colitis - Rectal biopsies

Schistosoma japonicum: - Infection site - Complication *Rare infections involve what?

Liver -Cirrhosis *Rarely affects CNS

Schistosoma haematobium: - Infection site - Complications (3) - Eggs found (2)

Bladder (Venous Plexus) - Hematuria/Irritation - SCC of bladder - Urine or bladder biopsies

Schistosoma intercalatum closely resembles what? | -Produces what symptoms

S. haematobium | -Intestinal schistosomaisis

Schistosoma spp. - Diagnosis - General Egg: - Size - Feature

75-150 um | -Single spine

Schistosoma spp. - Diagnostic Feature: - S. mansoni - S. japonicum - S. haematobium

S. mansoni -Lateral spine S. japonicum -Small, knoblike spine S. haematobium -Terminal spine