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Squamous Cell Carcinoma : Lipoid Pneumonia

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Some cases of squamous cell carcinoma of lung have a prominent endobronchial polypoid or papillary component. The resulting obstruction of the bronchial lumen can lead to atelectasis, obstructive bronchopneumonia, and bronchiectasis.

The image show post-obstructive lipoid pneumonia resulting from accumulated secretions distal to obstruction. The alveolar spaces are engorged with lipid-laden macrophages. The alveolar septa are thickened and contain inflammatory cells.

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