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 67-year-old man comes to the emergency department complaining of severe abdominal pain for the last several hours. The pain is cramp-like in nature, constant, 8/10, and has worsened over time. It is associated with bilious vomiting. He gives a history of episodic right upper abdominal pain for the past few months, mostly after consuming fatty foods, radiating to the tip of the right scapula. He reports no change in bowel habits, bladder habits, or change in weight. His past medical history includes diabetes and hypertension, and he takes hydrochlorothiazide, metformin, ramipril, and atorvastatin. Temperature is 38.2°C (100.8°F), blood pressure is 110/70 mm Hg, pulse is 102/min, respiratory rate is 20/min, and BMI is 23 kg/m2. On physical examination, his abdomen is distended and diffusely tender.
Laboratory test
Complete blood count
Hemoglobin 13 g/dL
WBC 16,000/mm3
Platelets 150,000/mm3
Basic metabolic panel
Serum Na+ 148 mEq/L
Serum K+ 3.3 mEq/L
Serum Cl- 89 mEq/L
An abdominal CT scan is shown. What is the most likely underlying cause of this patient’s current presentation?
assistant
Cholelithiasis