The BIDIAP index: a clinical, analytical and ultrasonographic score for the diagnosis of acute appendicitis in children

The BIDIAP index combines appendiceal diameter, systemic immune-inflammation index, and peritoneal irritation signs to diagnose pediatric acute appendicitis with 98.98% sensitivity and 77.78% specificity. This novel scoring system offers a simple, clinically practical tool that outperforms traditional diagnostic indices in children with acute abdominal pain.