Retrospective Study
Copyright ©The Author(s) 2021.
World J Clin Cases. Nov 16, 2021; 9(32): 9804-9814
Published online Nov 16, 2021. doi: 10.12998/wjcc.v9.i32.9804
Table 1 Demographics of colorectal cancer patients in 2008-2019
Variables
< 50-years-old, n (%)
≥ 50-years-old, n (%)
Total subjects, n (%)
Study population495 (100)
Age at diagnosis
< 50-years-old205 (41.4)
8-2926 (5.3)
30-3962 (12.5)
40-49117 (23.6)
≥ 50-years-old290 (58.6)
50-59135 (27.3)
60-6995 (19.2)
70-7952 (10.5)
80-898 (1.6)
Sex
Male110 (53.7)162 (55.9)272 (54.9)
Female95 (46.3)128 (44.1)223 (45.1)
Time period
2008-201347 (41.2)67 (58.8)114 (23.0)
2014-2019158 (41.5)223 (58.5)381 (76.9)
Table 2 Histopathological features of early-onset and late-onset colorectal cancer patients in 2008-2019
Histopathological feature< 50-years-old, n (%)≥ 50-years-old, n (%)Total, n (%)
Adenocarcinoma184 (89.8)273 (94.1)457 (92.3)
Nonepithelial6 (6.9)25 (6.1)31 (6.3)
Carcinoid3 (3.4)4 (1.0)7 (1.4)
Table 3 Anatomical sites of tumors presenting in early- and late-onset colorectal cancer patients in 2008-2019
Tumor sites
< 50-years-old, n (%)
≥ 50-years-old, n (%)
Total, n (%)
Right side45 (22.0)67 (23.1)112 (22.6)
Cecum13 (6.3)17 (5.9)30 (6.1)
Ascending colon27 (13.2)34 (11.7)61 (12.3)
Hepatic flexure1 (1.1)5 (1.2)6 (1.2)
Transverse colon4 (2.0)11 (3.8)15 (3.0)
Left side160 (78.0)223 (76.9)383 (77.4)
Descending colon17 (8.3)9 (3.1)26 (5.3)
Rectum84 (41.0)132 (45.5)216 (43.6)
Sigmoid13 (6.3)42 (14.5)55 (11.1)
Rectosigmoid36 (17.6)38 (13.1)74 (14.9)
Anus1 (1.1)1 (0.2)2 (0.4)
Anorectal9 (4.4)1 (0.3)10 (2.0)
Table 4 Clinical manifestations of early- and late-onset colorectal cancer patients in 2008-2019
Clinical manifestation
< 50-years-old, n (%)
≥ 50-years-old, n (%)
Total, n (%)
P
Diarrhea46 (22.4)83 (28.6)129 (26.1)0.123
Constipation69 (33.7)94 (32.4)163 (32.9)0.772
Abdominal paina114 (55.6)127 (43.8)241 (48.7)0.011
Hematochezia99 (48.3)150 (51.7)249 (50.3)0.452
Weight loss72 (35.1)97 (33.4)169 (34.1)0.699
Table 5 Clinical manifestations of early- and late-onset colorectal cancer patients in 2008-2019
Variables
< 50-years-old, n (%)
≥ 50-years-old, n (%)
Total, n (%)
P
Smoking69 (33.7)114 (39.3)183 (37)0.199
Parental history of CRC8 (3.9)4 (1.4)12 (2.4)0.072
Other family history of CRC6 (2.9)8 (2.8)14 (2.8)0.911
Suspicion of FAP4 (2.0)6 (2.1)10 (2.0)0.927
Suspicion of HNPCCa19 (9.3)12 (4.1)31 (6.3)< 0.05
BMI
Underweightc71 (34.6)58 (20.0)129 (26.1)< 0.001
Normoweight71 (34.6)101 (34.8)172 (34.7)0.521
Overweight and obeseb63 (30.7)131 (45.2)194 (39.2)< 0.005
Comorbidities
Diabetes mellitusc8 (3.9)53 (18.3)61 (12.3)< 0.001
Hypertensionc7 (3.4)73 (25.2)80 (16.2)< 0.001