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FR+ CTC levels in patients with periampullary cancers and benign diseases. A, Comparison of CTC levels in patients with benign and malignant diseases. B, Comparison of CTC levels in patients with PC, non‐PC and benign diseases. FR+ CTC, folate receptor‐positive circulating tumour cell; PC, pancreatic cancer; non‐PC, non‐pancreatic periampullary cancer. **P < .01
