Zaidi Recurrence Risk Score

**Semantic type:** Quantitative Concept

**Definition:** A prognostic risk score that stratifies recurrence-free survival for patients with resected pancreatic neuroendocrine tumors. A recurrence risk score is calculated based on presence of symptomatic tumors (0 or 1), tumor size greater than 2 cm (0 or 2), Ki-67 index (0, 1, or 6), and lymph node positivity (0 or 1).

**Synonyms:** - RRS - RRS - Recurrence Risk Score - Zaidi Score - Zaidi Score