Which imaging study is typically required to confirm the diagnosis of appendicitis?

The CT scan is commonly recognized as the most definitive imaging study for diagnosing appendicitis due to its high sensitivity and specificity. When a patient presents with symptoms suggestive of appendicitis, a CT scan can provide detailed images of the abdominal organs and structures, allowing clear visualization of the appendix. It is particularly effective in identifying an inflamed appendix and any associated complications, such as abscess formation or perforation.

In clinical practice, a CT scan is often preferred, especially in adults, because it can help confirm the diagnosis in ambiguous cases and guide further management. While ultrasound and MRI may also play a role in specific situations—particularly in pediatric patients or pregnant women where radiation exposure from a CT scan is a concern—the CT scan remains the standard for adults due to its comprehensive diagnostic capabilities.