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[Paragonimus westermani] [Paragonimus spp.]

Paragonimus westermani eggs range from 80-120 µm long by 45-70 µm wide.  They are yellow-brown, ovoid or elongate, with a thick shell, and often asymmetrical with one end slightly flattened.  At the large end, the operculum is clearly visible.  The opposite (abopercular) end is thickened.  The eggs are unembryonated when passed in sputum or feces.

A	B

A, B: Eggs of P. westermani in unstained wet mounts.

C	D

C, D: Eggs of P. westermani in an unstained wet mount.