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Hypophyseal Hemorrhage and Panhypopituitarism during Puumala Virus Infection: Magnetic Resonance Imaging and Detection of Viral Antigen in the Hypophysis
We describe 3 cases of nephropathia epidemica (NE) that confirm that Puumala virus infection may cause hypophyseal injury. Autopsy revealed a hemorrhagic hypophysis positive for Puumala virus antigen in both neuroendocrine stromal and vascular endothelial cells in 1 patient, and 2 patients developed hypophyseal hemorrhage (diagnosed with magnetic resonance imaging) during or shortly after acute NE, both of whom developed panhypopituitarism.