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由于平均寿命延长、出生率下降,老年人在人口构成中的比例将日趋增长,而癌症是老年人最常见的死亡原因之一,因此老年人的癌症以及衰老与癌症的关系已成为老年医学中的一项重要课题。一、老年与癌症发病率流行病学资料表明癌症的发病与年龄有密切关系。不同部位癌症的发病率随着年龄的变化各有其特征(图1)。除了少数几种癌症常见于儿童期以外,总的癌症发病率是随年龄的增长而显著上升。例如美国1969～1971年期间,只占人口1/10的65
As the average life expectancy is extended and the birth rate is declining, the proportion of elderly people in the population will increase, and cancer is one of the most common causes of death in the elderly. Therefore, the cancer of the elderly and the relationship between aging and cancer have become a part of geriatric medicine. An important topic. I. Epidemiological data on the incidence of senile and cancer indicates that the onset of cancer is closely related to age. The incidence of cancer at different sites varies with age (Figure 1). With the exception of a few cancers that are common in childhood, the overall incidence of cancer increases significantly with age. For example, during the period from 1969 to 1971, the United States accounted for only 1/10 of the population’s 65.