After your physical examination, what diagnostic would you perform first?

• A. Endoscope
• B. Radiographs
• C. Ultrasound
• D. CT Scan

Answer: (A)

Endoscopy is chosen first because it provides direct visualization of the mucosa and allows biopsy in the same procedure. When GI tract pathology is suspected after a physical exam, seeing the lining directly helps identify ulcers, erosions, inflammation, bleeding sources, or masses, and obtaining tissue confirms the diagnosis and guides treatment right away. Imaging tests like radiographs, ultrasound, or CT can show structure and complications, but they don’t offer the same detailed mucosal view or enable immediate tissue diagnosis, and some involve more radiation or resource use.