Abstract: Comorbidity refers to two or more kinds of chronic non-communicable diseases coexisting in the same patient.In recent years，the incidence of comorbidities in elderly cancer patients has been high，which has drawn extensive attention of many scholars.Therefore，the purpose of this study was to summarize the concept，form and category of the comorbidity，expound its incidence and pattern in elderly cancer patients，introduces tools for its measurement，and describe its effects on elderly cancer patients.This study found that although the incidence of comorbidity in elderly cancer patient was high，had a great impact on the diagnosis，treatment，quality of life and survival for elderly cancer patients，there was no consensus and unified assessment tool on the comorbidity model in the world.It was recommended that elderly cancer patients with comorbidities be included in clinical trials later to understand patient needs and solve existing problems.

Key words: Cancer, Health services for the aged, Comorbidity, Advances in research

摘要： 共病是指共存于同一患者体内的 2 种或 2 种以上的慢性非传染性疾病。近年来，老年癌症共病发生率较高，受到学者的广泛关注。本研究通过概述共病的概念、形式和分类，阐述老年癌症共病发生率及模式、介绍老年癌症共病测量工具、描述共病对老年癌症患者的影响，发现虽然老年癌症共病发生率高，且共病对老年癌症患者的诊断、治疗、生活质量及生存期存在较大的影响，但是对于共病模式尚未有统一共识，国际上没有统一的评估工具。建议后期将老年癌症共病患者纳入临床试验中，了解患者需求，解决现存问题。

关键词: 癌症, 老年人保健服务, 共病现象, 研究进展