Charcot-Leyden crystals are often observed in specimens infected with which one of the following trematodes?

a. Clonorchis (Opisthorchis) sinensis
b. Opisthorchis viverrini
c. Fasciola hepatica
d. Paragonimus westermani


D
Paragonimus eggs may be recovered from sputum and occasionally in feces using a sedimentation concentration method. The eggs may be observed in a wet mount, with or without iodine stain . Charcot-Leyden crystals may also be observed in sputum or lung tissue specimens. Charcot-Leyden crystals are slender and pointed at both ends. The crystals normally appear colorless and stain purplish to red with trichrome.

Biology & Microbiology

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