Morphological distribution of lung cancer from Cancer Incidence in Five Continents Vol. X

To compare the morphological distribution of cancer incidence worldwide, we abstracted the incidence in 2003–07 from Cancer Incidence in Five Continents Vol. X (CI5-X). The International Agency for Research on Cancer provides the CI5 detailed databases on the incidence of cancer recorded by cancer registries (regional and national) worldwide. We used the number of incidences in Japan, the Republic of Korea, the USA, Brazil, UK, Italy and Australia from the CI5 database which contains the incidence for selected cancer registries published in CI5-X for 2003–07. The Republic of Korea and the USA (NPCR: National Program of Cancer Registries) reported the cancer incidence covered by all the country; however, the remaining countries reported the cancer incidence by registry. We aggregated eight registries in Japan, two registries in Brazil, four registries in the UK, 22 registries in Italy and five registries in Australia. We compared the morphological distribution between countries for lung cancer coded as C34 (ICD10).