Integrating Contrast-Enhanced Dark-Light-Dark Sign and MRI Features for Rectal Cancer Lymph Node Diagnosis

Combining primary tumor MRI signs, particularly the so-called dark-light-dark sign on contrast-enhanced T1-weighted MRI scans, and the European Society of Gastrointestinal and Abdominal Radiology criteria improved the preoperative diagnosis of lymph node metastasis in patients with rectal cancer.