Abstract
In Thailand, five cancer types—breast, cervical, colorectal, liver and lung cancer—contribute to over half of the cancer burden. The magnitude of these cancers must be quantified over time to assess previous health policies and highlight future trajectories for targeted prevention efforts. We provide a comprehensive assessment of these five cancers nationally and subnationally, with trend analysis, projections, and number of cases expected for the year 2025 using cancer registry data. We found that breast (average annual percent change (AAPC): 3.1%) and colorectal cancer (female AAPC: 3.3%, male AAPC: 4.1%) are increasing while cervical cancer (AAPC: −4.4%) is decreasing nationwide. However, liver and lung cancers exhibit disproportionately higher burdens in the northeast and north regions, respectively. Lung cancer increased significantly in northeastern and southern women, despite low smoking rates. Liver cancers are expected to increase in the northern males and females. Liver cancer increased in the south, despite the absence of the liver fluke, a known factor, in this region. Our findings are presented in the context of health policy, population dynamics and serve to provide evidence for future prevention strategies. Our subnational estimates provide a basis for understanding variations in region-specific risk factor profiles that contribute to incidence trends over time.
Highlights
60% of the cancer burden in Thailand is due to five types of cancers: breast, cervix, colorectal, liver and lung cancers [1] (Figure 1)
It takes decades to go from an exposure to a disease outcome, it is possible that the decreasing daily smoking prevalence in the north plays a role in the decreasing incidence we show here
Our findings corroborate this study as we found female liver cancer incidence continuously increasing in the south, while male liver cancer increased until recent years, when it stabilized
Summary
60% of the cancer burden in Thailand is due to five types of cancers: breast, cervix, colorectal, liver and lung cancers [1] (Figure 1) Excluding melanoma, these five cancers for 59.2%for of 59.2%. While national estimates are useful in highlighting important cancerscancers on a large there is clear these national estimates are useful in highlighting important on scale, a large scale, therevariability is clear in the incidence of these cancers theacross north,the northeast, central and southand regions [2,3,4,5,6,7].
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