Renal Main41-50,Q 1,A 54-year-old man comes to the emergency department due to a cough. He has a 44-pack-year smoking history but quit a month ago. The patient has also experienced weight loss, anorexia, constipation, increased thirst, and fatigue, which he attributes to depression. He lost his wife to breast cancer 4 months ago and says that life hasnt felt the same since then, Blood pressure is 104/68 mm Hg, pulse is 95/min, and respirations are 24/min. Oxygen saturation is 92% on room air. Th
