[Clinical Picture] Adenocarcinoma of lung presenting as diffuse interstitial lung disease

A 41-year-old woman, who never smoked, was transferred to the intensive care unit of Sultan Qaboos Comprehensive Cancer Care and Research Centre (Muscat, Oman) on a ventilator in April, 2022. She initially presented with a flu-like illness and minimal exertional shortness of breath to a private hospital in November, 2021. Chest radiograph showed reticulonodular shadows bilaterally and a patchy dense opacity with ill-defined margins in the left midzone (appendix). On the basis of her symptoms and chest CT (figure), the patient was suspected of having pneumonia and interstitial involvement.