Metastasis of cancer cells to sites away from the main tumor can cause pain and other symptoms and greatly increases the likelihood a patient will die of the disease.

癌症的转移会造成很多的痛苦以及引起一系列的症状增加患者的病死率。

youdao

Conclusion Tumors from upper digestive tract have some relations with diet factors but the effects vary with the differences of tumor sites, dose of exposure and area, etc.

结论上消化道癌与饮食因素有关，但其重要性可因肿瘤部位、暴露剂量、地区等不同而变化。

youdao

Objective To explore the relationship among the recurrence and histological types and tumor sites in intracranial astrocytoma of children.

目的 探讨儿童星形细胞瘤的复发与肿瘤的组织学类型、肿瘤部位及手术的关系。

youdao