But monotonic increases for 3 months isn’t a spike, it’s a trend. Nothing to do but wait for the next scan.
We're definitely in the same boat. DH's CEA reached a low of 3.2 in July then slowly but steadily increased... Yet the scans showed stability/slight decrease in his tumors (at least up to the last one back in December).
Wife of Dx 04/18 (51 yo). MSS, KRAS G12A
No primary (involuted?)
Lytic tumor L4 vertebrae, EBRT 04/18, SBRT 02/19
Resect small intestine 05/18 (no cancer - Crohn's)
Failed adjuvant Xelox
Folfiri + Avastin 03/19 to 01/20
6.7 cm left adrenal mass 03/19, successful resection 02/20
CEA since 03/19: high 58, low 3.2, now 4.4
Scan 03/19: Multiple small lung nodules up to 5mm
Scan 12/19: one 1mm stable nodule
PET 04/20 uptake by L4
L3-L4-L5 fusion surgery and residual tumor removal 05/20