What testing and imaging are recommended for suspected appendicitis in adults?

• A. Only CT scan.
• B. History and physical examination; labs; imaging such as CT abdomen/pelvis or ultrasound depending on patient factors and resources.
• C. No imaging is needed.
• D. MRI is required in all cases.

Answer: (B)

The main idea is that evaluating suspected appendicitis in adults relies on a combination of clinical assessment, laboratory tests, and imaging chosen based on the patient and setting. A thorough history and physical examination identifies signs that raise suspicion and helps distinguish appendicitis from other causes of abdominal pain. Lab testing—typically a CBC showing leukocytosis with neutrophilia, plus inflammatory markers—and a pregnancy test in women of childbearing age, provide objective support. Imaging then confirms or excludes appendicitis, with the choice tailored to the individual. CT of the abdomen and pelvis with IV contrast is highly accurate and commonly used, but ultrasound is a valuable alternative in patients where radiation should be avoided or when ultrasound findings are sufficient or more feasible given the clinical scenario and resources. MRI is an option when radiation is a concern (for example, in pregnancy) but is not required for every patient. So the best approach blends history, exam, labs, and appropriately selected imaging rather than relying on a single test or universally requiring one modality.