Scores for the assessment of low anterior resection syndrome (LARS)

Background: Low anterior resection syndrome (LARS) describes a symptom complex that frequently occurs after anterior rectal resection but is not exclusive to this situation. The LARS is closely correlated with the quality of life of those affected. Scores are required to describe the severity of symptoms. Method: This narrative review uses a pragmatic, practice-based approach to examine scores and quality of life assessments relevant to LARS. Results: Established incontinence scores or specific questions on continence were frequently used to describe anorectal dysfunction following anterior resection of the rectum. There are two validated scores specifically for LARS, the Memorial Sloan Kettering Cancer Center (MSKCC) function instrument and the LARS score. The latter has become established as an international standard due to its high practicability. The modular system of the European Organization for Research and Treatment of Cancer (EORTC) is most commonly used as a general and specific quality of life questionnaire. Conclusion: Despite some inherent limitations of the scores and quality of life questionnaires listed, the LARS score and the EORTC quality of life questionnaires are valid instruments for recording LARS. In particular, they also enable international comparability.