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Case 97. Dirofilariasis of lung (44 y-o F)
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Surgical specimen of an asymptomatic coin lesion with peripheral eosinophilia
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Key words : Dirofilaria immitis, visceral larva migrans, coin lesion
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zoonosis
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| A coin lesion is seen in the subpleural region of the right middle lobe (CT scan). | A thrombosed pulmonary artery branch is observed in the center of the encapsulated and necrotic coin lesion (HE, low power). | |
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| A cut surface of a helminth is noted in the embolus of the pulmonary artery (elastica van Gieson). | The necrotic microfilaria of Dirofilaria immitis is histologically featured by the internal ridges of the thick cuticle, a well-developed muscle layer and small-sized gut (HE, high power). | |
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