A 29-year-old male is admitted to the hospital with chest pain and a large left-sided pleural effusion. Prior to admission, he had a thoracentesis at an OSH during which 1200 ml of fluids was removed. CT scan of the chest showed a retroperitoneal mass and pleural thickening. Past medical history: Negative prior to the OSH admission Medications: Metoprolol, furosemide, acetaminophen, oxycodone ER, pregabalin, phenoxybenzamine, esomeprazole Physical examination: VS 37.8-132-99/56-24 Lungs: decreased sounds L lung Heart: Tachycardic, no m/r/g Abdomen: Soft, non-tender.
Bowel sounds normal. No masses or organomegaly Extremities: + 3 BLE edema Which laboratory tests should be performed next? What can be the differential diagnosis? *This case is from Docplexus Editorial Team for educative purpose only.
