Skip to main content
. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Cancer. 2013 Jul 15;119(17):3140–3147. doi: 10.1002/cncr.28076

TABLE 1.

Characteristics of first primary colorectal cancer (CRC) cases according to occurrence and site of second primary cancer, SEER 13 [1992–2009]

All 1st Primary CRC Cases N (col %) Cases who Developed a 2nd Primary Cancer
All 2nd Primary Sites N (col %) 2nd Primary CRC N (col %)
Age at 1st CRC diagnosis
 40–49 16,834 (10) 675 (5) 206 (7)
 50–59 38,679 (23) 2,359 (16) 499 (17)
 60–69 53,089 (31) 5,163 (35) 904 (32)
 70–79 61,557 (36) 6,683 (45) 1,245 (44)
Sex
 Male 92,299 (54) 9,029 (61) 1,594 (56)
 Female 77,860 (46) 5,851 (39) 1,260 (44)
Race
 White non-Hispanic 117,125 (69) 10,923 (73) 1,984 (70)
 Black 18,493 (11) 1,618 (11) 369 (13)
 White Hispanic 14,600 (9) 998 (7) 246 (9)
 American Indian/Alaska Native 778 (0.5) 67 (0.5) 10 (0.4)
 Asian or Pacific Islander 18,032 (11) 1,263 (8) 240 (8)
 Other/unspecified 1,131 (1) 11 (0.1) 5 (0.2)
Stage at 1st CRC diagnosis
 Localized 71,436 (42) 8,000 (54) 1,349 (47)
 Regional 64,925 (38) 5,764 (39) 1,183 (41)
 Distant 29,837 (18) 801 (5) 216 (8)
 Unstaged 3961 (2) 315 (2) 106 (4)
Site of 1st CRC
 Cecum 25,856 (15) 2,231 (15) 380 (13)
 Ascending colon 18,615 (11) 1,743 (12) 267 (9)
 Hepatic flexure 5,923 (3) 549 (4) 103 (4)
 Transverse colon 9,757 (6) 945 (6) 218 (8)
 Splenic flexure 4,365 (3) 432 (3) 130 (5)
 Descending colon 7,624 (4) 784 (5) 185 (6)
 Sigmoid colon 41,829 (25) 3,880 (23) 761 (27)
 Rectosigmoid junction 16,952 (10) 1,418 (10) 275 (10)
 Rectum 39,238 (23) 2,898 (19) 535 (19)
SEER Registry *
 San Francisco-Oakland 18,826 (11) 1,553 (10) 283 (10)
 Connecticut 19,001 (11) 1,812 (12) 300 (11)
 Detroit 20,429 (12) 2,106 (14) 425 (15)
 Hawaii 7,033 (4) 536 (4) 95 (3)
 Iowa 17,390 (10) 1,672 (11) 314 (11)
 New Mexico 7,491 (4) 539 (4) 96 (3)
 Seattle-Puget Sound 17,277 (10) 1,579 (11) 245 (9)
 Utah 6,472 (4) 500 (3) 100 (4)
 Atlanta 10,250 (6) 731 (5) 138 (5)
 San Jose-Monterey 9,119 (5) 706 (5) 117 (4)
 Los Angeles 36,203 (21) 3,093 (21) 731 (26)
 Rural Georgia 668 (0.4) 53 (0.4) 10 (0.4)
*

Excludes Alaska Native Tumor Registry, which is not included in SEER multiple primary data files.