Lung adenocarcinoma presenting as acute hypoxemic respiratory failure.

Lung adenocarcinoma usually presents with cough, hemoptysis, and weight loss with radiologic findings of suspicious nodules and masses. It rarely mimics other diseases such as pneumonia. We here present a case of a female patient who presented with acute hypoxemic respiratory failure and radiologic findings of multi-lobar consolidation and was found to have lung adenocarcinoma.