Figure 1. Relationship between radiographic findings and tumor markers CEA and CA 19-9 in a patient with metastatic colorectal adenocarcinoma.Legend: Patterns of CA 19-9 and CEA elevation in a patient with recurrent metastatic rectal cancer. CA 19-9 (carbohydrate antigen 19-9) Units/ml on the Y-axis above as indicated, CEA (carcinoembryonic antigen) ng/ml on the Y-axis below as indicated, FOLFIRI (leucovorin, 5-fluorouracil, irinotecan), SBRT (stereotactic body radiotherapy).
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