Global trends in lung cancer show continuing disparities By Tara Haelle Feb. 2, 2021Reprints Lung cancer cells Anne Weston/Francis Crick Institute/Wellcome With over 2 million new cases globally in 2018, lung cancer remains the most prevalent cancer in the world. And with tobacco use accounting for somewhere between 80% and 90% of lung cancers, depending on region, it’s unsurprising that the World Conference on Lung Cancer this past weekend devoted an entire oral session to the “end-game” of a tobacco-free world. Yanting Zhang of Sun Yat-sen University in China presented new findings on global trends from the International Agency for Research on Cancer’s Cancer Incidence in Five Continents database.