system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 48-year-old female presents to the emergency room with mental status changes.
Laboratory analysis of the patient's serum shows:
Na 122 mEq/L
K 3.9 mEq/L
HCO3 24 mEq/L
BUN 21 mg/dL
Cr 0.9 mg/dL
Ca 8.5 mg/dL
Glu 105 mg/dL

Urinalysis shows:
Osmolality 334 mOsm/kg
Na 45 mEq/L
Glu 0 mg/dL

Which of the following is the most likely diagnosis?
assistant
Lung cancer