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. 2020 Nov 6;21(1):15. doi: 10.3892/ol.2020.12276

Table I.

Demographic and clinicopathological characteristics of the study cohort.

Characteristic No. of patients (%)
Sex
  Female 16 (51.61)
  Male 15 (48.39)
Localization
  Left colon 12 (38.71)
  Right colon 13 (41.94)
  Rectum 6 (19.35)
Pathological stage at the time of ctDNA analysis
  Synchronous 18 (58.06)
  Metachronous 13 (41.94)
Histological type
  Adenocarcinoma 24 (87.10)
  Mucinous adenocarcinoma 7 (12.90)
Grading
  G2 19 (61.29)
  G3 3 (9.68)
  Undefined 9 (29.03)
Metastatic sites at the time of ctDNA analysis
  Only liver 8 (25.81)
  Only lung 1 (3.23)
  Peritoneum 4 (12.90)
  Multiple 18 (58.06)
Number of metastatic sites at the time of ctDNA analysis
  1 13 (41.93)
  2 12 (38.71)
  ≥3 6 (19.36)
Surgery for primary tumor
  No 11 (35.48)
  Yes 20 (64.52)
Tissue used for molecular analysis of RAS mutational status
  Primary tumor 23 (74.19)
  Metastasis 8 (25.81)

ctDNA, circulating tumor DNA.