What finding at surgery confirms infection with Echinococcus granulosus?

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Multiple Choice

What finding at surgery confirms infection with Echinococcus granulosus?

Explanation:
Echinococcus granulosus produces hydatid cysts in organs like the liver or lung, and within those cysts are brood capsules that contain protoscolices (scolices) embedded in the cyst fluid. Finding encysted larval scolices during surgery is diagnostic of this infection because it shows the larval form developing inside the hydatid cyst. The other scenarios—adult worms in the intestine, eggs in feces, or larvae in muscle—reflect other parasites or life stages not characteristic of the surgical finding for echinococcosis.

Echinococcus granulosus produces hydatid cysts in organs like the liver or lung, and within those cysts are brood capsules that contain protoscolices (scolices) embedded in the cyst fluid. Finding encysted larval scolices during surgery is diagnostic of this infection because it shows the larval form developing inside the hydatid cyst. The other scenarios—adult worms in the intestine, eggs in feces, or larvae in muscle—reflect other parasites or life stages not characteristic of the surgical finding for echinococcosis.

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