From: Clinical significance of peripheral circulating tumor cell counts in colorectal polyps and non-metastatic colorectal cancer
CTC counts (> 1/3.2 ml)
CTC counts (≤ 1/3.2 ml)
X2 value
P value
Polyps
19
42
X2 = 22.44
P < 0.001
Carcinoma
75
34