Quick Review Cards for Medical Laboratory Science

Trematodescontinued Clinical Microbiology Review 255

ROUTE OF LOCATION

TREMATODE INFECTION OF ADULT DIAGNOSTIC STAGE OTHER

Paragonimus
westermani

Schistosoma
mansoni

Blood fluke

Ingestion of under-

cooked crabs or

crayfish

Skin penetration

Lungs

Intestinal venules

Ova in feces or sputum. 80–120 μm × 48–60

μm. Yellow-brown. Thick shelled. Flattened

operculum. “Chinese vase.”

Ova in feces. Elongated. 155 × 65 μm.

Pronounced lateral spine.

(From Leventhal R, Cheadle

RF. Medical Parasitology: A

Self-Instructional Text, 5th ed.

Philadelphia: FA Davis;

2002:74.)

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