[Verified Answer]: This is a 59-year-old male patient who is…

This is a 59-year-old male patient who is admitted from the ER for dyspnea and chest pain. Chest x-ray shows a large pleural effusion on the right. A thoracentesis is performed, and the patient’s symptoms resolved. The cytology report shows that this is a malignant effusion. The patient has a history of colon cancer that was removed 5 years ago with no recurrence until now. The patient has an appointment with his oncologist next week. Final Diagnosis: