Monday, January 26, 2009

Answer to Case 55

Clonorchis sinensis (a.k.a. Oriental liver fluke) adult fluke.
Congratulations to everyone who wrote in with the correct answer!

The keys to identification of this fluke is its small size (10-25 mm long), characteristic gut bifurcation (arrows), and identification of 30 um eggs within the uterus (arrow head).

In this location, you would also want to exclude Fasciola hepatica. This fluke is larger than Clonorchis (30 mm long), has a much more complex gut branching system, and has much larger eggs.

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