What is the characteristic pathology described for EMV in affected tissue?

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Multiple Choice

What is the characteristic pathology described for EMV in affected tissue?

In EMV infection, the hallmark changes are in the lungs from viral replication in the respiratory tract. The virus drives cell–cell fusion via its fusion protein, producing giant multinucleated syncytial cells in the alveolar epithelium and adjacent macrophages. This cytopathic effect accompanies a congested, firm lung with a foamy hemorrhagic exudate and dilation of lymphatics from the inflammatory response. This combination—pulmonary consolidation with foamy hemorrhagic exudate and giant multinucleated syncytial cells—is the most characteristic tissue pathology for EMV. Hepatic necrosis, renal failure, and meningeal purulent inflammation are not the primary or characteristic tissue changes described for EMV in the lung, so they don’t fit the typical EMV pathology in affected tissue.

In EMV infection, the hallmark changes are in the lungs from viral replication in the respiratory tract. The virus drives cell–cell fusion via its fusion protein, producing giant multinucleated syncytial cells in the alveolar epithelium and adjacent macrophages. This cytopathic effect accompanies a congested, firm lung with a foamy hemorrhagic exudate and dilation of lymphatics from the inflammatory response. This combination—pulmonary consolidation with foamy hemorrhagic exudate and giant multinucleated syncytial cells—is the most characteristic tissue pathology for EMV.

Hepatic necrosis, renal failure, and meningeal purulent inflammation are not the primary or characteristic tissue changes described for EMV in the lung, so they don’t fit the typical EMV pathology in affected tissue.

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