Table 1 Factors associated with the presence of microextension
Clinicopathological factor | n | Microextension, n (%) | x 2 | P-value* | |
|---|---|---|---|---|---|
Absent | Present | ||||
Sex | 0.790 | 0.598 | |||
Male | 75 | 28 (37.3 %) | 47 (62.7 %) | ||
Female | 54 | 20 (37.0 %) | 34 (63.0 %) | ||
Age | 0.794 | 0.624 | |||
<65 years | 93 | 34 (36.6 %) | 59 (63.4 %) | ||
≥65 years | 36 | 14 (38.9 %) | 22 (61.1 %) | ||
Synchronous or metachronous | 0.982 | 0.965 | |||
Synchronous | 70 | 25 (35.7 %) | 45 (64.3 %) | ||
Metachronous | 59 | 23 (39 %) | 36 (61 %) | ||
Original site | 3.185 | 0.009 | |||
Rectum | 48 | 25 (52.1 %) | 23 (47.9 %) | ||
Colon | 81 | 23 (28.4 %) | 58 (71.6 %) | ||
Number of tumors | 2.537 | 0.045 | |||
1 | 85 | 38 (44.7 %) | 47 (55.3 %) | ||
>1 | 44 | 10 (22.7 %) | 34 (77.3 %) | ||
Max tumor diameter | 1.345 | 0.52 | |||
<3 cm | 39 | 17 (43.6 %) | 22 (56.4 %) | ||
≥3 cm | 90 | 31 (34.4 %) | 59 (65.6 %) | ||
CEA (ng/ml) | 4.805 | 0.001 | |||
≤5 | 35 | 20 (57.1 %) | 15 (42.9 %) | ||
>5 | 94 | 28 (29.8 %) | 66 (70.2 %) | ||
CA199 (U/ml) | 0.478 | 0.114 | |||
≤37 | 68 | 24 (35.3 %) | 44 (64.7 %) | ||
>37 | 61 | 24 (39.3 %) | 37 (60.7 %) | ||
Chemotherapy | 0.906 | 0.817 | |||
Yes | 55 | 21 (38.2 %) | 34 (61.8 %) | ||
No | 74 | 27 (36.5 %) | 47 (63.5 %) | ||