Question of the Week Welcome to your Question of the Week, Sept 14 Clinical Case Sept 14, 2020A 60-year old male presenting with an elevated hemoglobin He did not have any complaints other than weight loss in the last couple of months. His wife had noticed that he was often red in the face. Phys/exam: central cyanosis Lab: Hemoglobin 14 mmol/l, Hematocrit 66% A CT-scan was performed What was the diagnosis? Time is Up! NEJM Knowledge+ Question of the WeekList:Sept 8, 2020