Longitudinal Analysis of Circulating Tumor Cells in Colorectal Cancer Patients by a Cytological and Molecular Approach: Feasibility and Clinical Application.

Interestingly, while the percentage of patients with no cells in the blood declined during the time period of the study, a highly significant increase in patients with both intermediate (1–2 CTC) and high prevalence of CTC (≥3 CTC) was monitored for the duration of the study (p=0.002) ( Figure 2E ).

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