Mikael Häggström [notes 1]
When alveolar fluid is seen, use high magnification to evaluate any stexture.
Edema is seen as an eosinophilic homogenous alveolar content.
Pulmonary hemorrhage, with red blood cells which in this case are necrotic, being hard to distinguish on low magnification. The necrosis may be a post necrotic finding.
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