The International Agency for Research on Cancer (IARC) and the US National Cancer Institute (NCI) have initiated a series of cancer-focused seminars [Scelo G, Hofmann JN, Banks RE et al. International cancer seminars: a focus on kidney cancer. Ann Oncol 2016; 27(8): 1382–1385]. In this, the second seminar, IARC and NCI convened a workshop in order to examine the state of the current science on esophageal squamous cell carcinoma etiology, genetics, early detection, treatment, and palliation, was reviewed to identify the most critical open research questions. The results of these discussions were summarized by formulating a series of ‘difficult questions’, which should inform and prioritize future research efforts.

中文翻译：

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国际癌症研讨会：以食道鳞状细胞癌为重点

国际癌症研究机构（IARC）和美国国家癌症研究所（NCI）发起了一系列针对癌症的研讨会[Scelo G，Hofmann JN，Banks RE等。国际癌症研讨会：以肾癌为重点。Ann Oncol 2016；27（8）：1382–1385]。在本次研讨会中，IARC和NCI召开了第二次研讨会，以研究食管鳞状细胞癌的病因，遗传学，早期发现，治疗和缓解的最新科学现状，并对其进行了审查，以找出最关键的开放研究问题。这些讨论的结果通过提出一系列“困难的问题”进行了总结，这些问题应为未来的研究工作提供信息并确定其优先级。