Pharyngeal cancer rates map reveal stark geographic divides and lifestyle risks
A global analysis of 316,000 annual pharyngeal cancer cases shows nasopharyngeal cancer dominates Asia while oropharyngeal cancer concentrates in wealthy Western nations. The findings link development level, smoking, and alcohol to disease burden, signaling different prevention and healthcare strategies needed by region—critical insight for pharmaceutical companies, health systems, and policymakers targeting cancer control.
Originaltitel: Global Incidence, Risk Factors, and Trends of Pharyngeal Cancer by Anatomical Sites: A Systematic Analysis of Cancer Registries.
Orofarynxcancer växer globalt medan två andra farynxcancertyper minskar — en skevning som påverkar diagnostik- och behandlingsstrategier framöver. År 2020 diagnosticerades 316 020 farynxcancerfall världsvis, med nasaofarynxcancer vanligast (1,7 per 100 000), men orofarynxcancer visar starkast uppgång. Geografin spelar stor roll: Sydöstasien drabbas hårdast av nasaofarynxcancer, Västeuropa och Sydcentralasien av de övriga typerna. Höga levnadsstandarder, rökning, alkohol och dåliga matvanor korrelerar med ökad incidens. Forskare från Karolinska Institutet och internationella universitet analyserade data från globala cancerregister mellan 1990 och 2020 med Joinpoint-regression. Eftersom latencytiden från riskexponering till sjukdom är lång förväntas orofarynxcancern fortsätta stiga, vilket kräver omprioriteringar i screeningprogram och resursallokering för regionvården under kommande årtionde.
PURPOSE: Nasopharyngeal, oropharyngeal, and hypopharyngeal cancers are the three types of pharyngeal malignancies that vary in prognosis. This study aims to evaluate the global disease incidence, risk factors, and trends of pharyngeal cancer by anatomical sites. METHODS: The Global Cancer Observatory, Global Burden of Disease, and Cancer Incidence in Five Continents Plus, were accessed to investigate the disease burden and related risk factors by anatomical site. Average Annual Percentage Changes were computed using Joinpoint regression to assess trends in age-standardized rates (ASR) of incidence of pharyngeal cancer. RESULTS: An estimated total of 316,020 (ASR=3.5) pharyngeal cancer cases were reported in 2020, with nasopharyngeal cancer being the most prevalent subtype (1.7), followed by oropharyngeal (1.1) and hypopharyngeal cancer (0.91). Nasopharyngeal, oropharyngeal, and hypopharyngeal cancers were most common in South-Eastern Asia (ASR = 5.0), Western Europe (ASR = 2.8), and South-Central Asia (ASR = 2.1), respectively. Higher Human Development Index (HDI), smoking, alcohol drinking, unhealthy dietary habits, hypertension, and lipid disorders were associated with higher pharyngeal cancer incidence. The results indicated a declining or constant trend in hypopharyngeal and nasopharyngeal cancers and a notable rise in oropharyngeal cancer. CONCLUSION: The incidence of pharyngeal cancer subtypes demonstrates significant geographical heterogeneity. While hypopharyngeal and nasopharyngeal cancers are declining or stable, oropharyngeal cancer is on a clear upward trajectory. Given the prolonged latency between risk factor exposure and clinical onset, the oropharyngeal cancer burden is projected to rise further.