Problem: You are called on a patient in the ED to admit a 55-year-old male who presented to the ER today with AMS and severe hyponatremia (Na+ 120). The ER physician tells you the patient has a history of small cell lung cancer (recently diagnosed), hypertension, and hypothyroidism. Based on this limited information, list at least 2 differential diagnoses that could cause AMS and hyponatremia (list at least 2 diagnoses for each system): Neuro: CV: Pulmonary: GI: GU: Metabolic: Psychiatric. Need Assignment Help?