Oncology is a comprehensive, independent medical secondary discipline that studies tumors.

肿瘤学是研究肿瘤的综合性、独立性医学二级学科。

Based on oncology, the doctor believes that old age is a risk factor for many cancers.

这位医生基于肿瘤学的理论认为高龄是引发许多癌症的危险因素。

The medical scientist specializes in oncology research and the collection of actual cases.

这位医学家主攻肿瘤学方面的研究和实际病例的收集。

The writer is an oncology nurse practitioner.

留言者是位肿瘤科护士。

Timothy Ley, a profession of oncology at Washington University.

Timothy Ley说，他在华盛顿大学研究肿瘤。

The report appears in the September issue of the Lancet Oncology.

报告刊登在柳叶刀肿瘤学9月号上。

As a result, over 400 new oncology drugs are in clinical development.

因而，有超过400个的肿瘤新药在临床研发阶段。

So, oncology drugs have shown to be beneficial for both patients and industry.

因此，肿瘤药物对于病人和公司都是有益的。