Table 2 Distribution of advanced colorectal neoplasm (ACRN) reported in studies in Asian vs Caucasian populations
Male (%)Mean age (years)ACRN
Total (%)Proximal (%)Distal (%)Both (%)
Byeon16Multicentre860 (54.8)54.439 (4.5)17 (43.6)19 (48.7)3 (7.7)
Chiu14Taiwan, China1708 (59.8)52.551 (3.0)10 (19.6)32 (62.7)9 (17.6)
Liu33Taiwan, China5973 (52.3)56.6199 (3.3)56 (28.1)95 (47.7)48 (24.1)
Sung12Hong Kong505 (44.4)56.563 (12.5)18 (28.6)37 (58.7)8 (12.7)
Distribution in Asian studies19.6–43.647.7–62.77.7–24.1
Imperiale18USA1994 (58.9)59.850 (45.0)61 (55.0)
Lieberman17USA3121 (96.8)62.9329 (10.5%)101 (30.7)201 (61.1)27 (8.2)
Imperiale35USA906 (61)44.832 (3.5%)14 (43.8)17 (53.1)1 (3.1)
Distribution of ACRN in Caucasian studies23.7–45.053.1–64.13.1–12.2