MRTRGMRI Tumor Regression Grade (Rectal)
Radiologic Findings
Scoring Definitions
- Grade 1: Complete regression; thin linear fibrosis.
- Grade 2: Dense fibrosis; no obvious residual tumor.
- Grade 3: Fibrosis > visible tumor.
- Grade 4: Visible tumor > fibrosis.
- Grade 5: Massive tumor; no response.
Guidelines & Evidence
Verified
Last Review: 2026
Last Comprehensive Review: 2026
