Evans et al Tumor Regression Grade (1992)

**Semantic type:** Intellectual Product

**Definition:** A grading system developed by Evans et al (1992) to assess a decrease in tumor size or extent in the body. (Evans DB, Rich TA, Byrd DR, Cleary KR, Connelly JH, Levin B, et al. Preoperative chemoradiation and pancreaticoduodenectomy for adenocarcinoma of the pancreas. Arch Surg. (1992) 127:1335-9.)

**Synonyms:** - EVANS TUMOR REGRESSION GRADE 1992