Artículo original: Augustine A, Cecil GH, Lakhani A, Kanamathareddy HV, John R, Simon B, et al. “Sigmoid take-off” to define recto-sigmoid junction and its impact on rectal cancer classification, staging, and management. Clin Radiol. 2025;84(106858):106858 DOI: https://doi.org/10.1016/j.crad.2025.106858 Sociedad: Royal College…