This is a case from NEJM as featured by their case challenge. Shown here is a bilothorax.

This is a case from NEJM as featured by their case challenge. Shown here is a bilothorax.
A 77-year-old man with metastatic lung adenocarcinoma presented with a 2-week history of dyspnea. A chest radiograph showed a pleural effusion on the right side. Drained pleural fluid was olive brown. https://t.co/MSpgmtQRlM pic.twitter.com/KgZLOtAYpQ
— NEJM (@NEJM) February 19, 2023