Abstract

Primary lung adenocarcinoma usually presents as a mass with spiculated margins with post-contrast enhancement or an endobronchial lesion.The unusual presentation of lung adenocarcinoma in a nonsmoker without any preexisting lung disease are described here. 3cases in this series with presentation as organizing pneumonia, miliary mottling pattern, and pleural effusion. A diffuse pneumonic type can mimic the clinical presentation of an infectious lung disease Thus, it can represent a diagnostic challenge, especially in the setting of rapidly progressive respiratory failure

Key words: lung adenocarcinoma, lung cancer, miliary, lung cavity