Epidemiological characteristics of neuroendocrine neoplasms in Beijing: a population-based retrospective study.

Regarding the number of newly diagnosed cases, there were more cases in urban than in rural areas each year, but the gap in incidence rate decreased from 1998 to 2018 as the rural incidence rate increased rapidly (Table 2 ). Incidence During the period 1998–2018, the number of newly diagnosed cases of NENs in Beijing showed an increasing trend each year, from 1.37 cases per 100,000 per year in 1998 to 7.26 cases per 100,000 per year in 2018 (Table 2 ).

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