RECIST
Pronunciation: REE-sist
Also written as: RECIST — Response Evaluation Criteria in Solid Tumors
Standardized criteria for measuring tumor response to treatment in oncology imaging studies.
Full Definition
Response Evaluation Criteria in Solid Tumors (RECIST) is an internationally accepted set of guidelines used by radiologists and oncologists to assess how well cancer patients respond to treatment. The criteria define specific measurements for target lesions and categorize responses as complete response, partial response, stable disease, or progressive disease. RECIST guidelines are essential for clinical trials and treatment monitoring, providing objective, reproducible methods for tumor assessment. The most current version, RECIST 1.1, was updated to address advances in imaging technology and includes specific rules for lymph node measurement.
Usage
Usage note: Always capitalize when referring to the specific criteria; lowercase when used as an adjective (e.g., 'recist-based assessment').
In Context
- "The radiologist applied RECIST 1.1 criteria to evaluate the patient's response to chemotherapy." — Imaging report
- "Target lesions were measured according to RECIST guidelines to determine treatment efficacy." — Clinical trial documentation