Chemoradiotherapy plus tislelizumab for mismatch repair proficient rectal cancer with supraclavicular lymph node metastasis: A case report

Figure 1 ¹⁸F-FDG PET/CT image before and after treatment. A: ¹⁸F-FDG PET/CT image before treatment. The number is time of examination; B: Metastatic lymph node in the clavicle before treatment. The orange arrow indicates the lymph node; C: The rectal lesion before treatment. The lesion is indicated by the blue arrows; D: ¹⁸F-FDG PET/CT image after treatment. The number is time of examination; E: Disappearance of the metastatic lymph node after treatment; F: The rectal lesion with reduced uptake after treatment.