手术治疗主要用于去除瘤灶，达到治疗的目的，同时也适用于癌症的预防、诊断、 分期、术后结构重建与功能康复等。这种方法不存在生物抵抗性；无潜在致癌可能； 不受肿瘤差异性影响；能提供准确的病理分期及组织学类型；适用于大部分未扩散 的肿瘤。但是会破坏正常组织；可有手术并发症，可致畸形、影响正常功能，甚至 危及生命；已有转移者，不能完全治愈；重要器官无法彻底切除。
Experimental cancer solutions are examined in scientific trials to compare the proposed treatment method to the most beneficial present treatment.
局部症狀：異常腫塊或腫脹（腫瘤），出血，疼痛和潰瘍。因為腫瘤壓迫周遭組織所引起的症狀，如黃疸。
Diagnosing a whole new cancer inside a Expecting lady is difficult, partially since any indicators are generally assumed to generally be a normal soreness connected with pregnancy. Consequently, most cancers is often found in a considerably later phase than normal.
[188] The effectiveness of chemotherapy is commonly restricted by its toxicity to other tissues in the human body. Even if chemotherapy doesn't offer a everlasting treatment, it could be beneficial to reduce symptoms for instance discomfort or to decrease the dimension of an inoperable tumor in the hope that operation will grow to be probable in the future.[citation necessary]
如前所述，癌症源于正常细胞转变为肿瘤细胞的多阶段过程，通常从癌前病变发展 到恶性肿瘤。这些变化是一个人的遗传因素与三种外部因素相互作用的结果，外部 因素包括：
健康饮食。选择富含水果和蔬菜的饮食。选择全谷物和瘦肉蛋白质。限制摄入加工肉类。
University of Florida Most cancers Healthcare facility Simply because cancer is a class of conditions,[7][257] it truly is unlikely that there will at any time be only one "cure for most cancers" any much more than there'll be one cure for all infectious disorders.
癌症會根據發生的部位，有不同前兆或症狀，但這些前兆也可能由其他疾病引起，因此，如果以下症狀持續數週都沒有改善，請前往醫院進行檢查。
許多預防癌症的想法是根據流行病學的研究而來，分析病患的資料可發現生活方式或是接觸一些環境危險因子的確與特定癌症的發生機率相關。越來越多的證據顯示，根據流行病學研究所提出的建議改善，確實可以讓癌症發病率和死亡率降低。
Taller folks have a heightened chance of cancer since they have more cells than shorter people. Considering the fact that peak is genetically determined to a significant extent, taller individuals have a heritable increase in cancer risk.[88]
The Dutch professor Francois de la Boe Sylvius, a follower of Descartes, believed that all sickness was the end result of chemical procedures Which 癌症 acidic lymph fluid was the reason for most cancers. His contemporary Nicolaes Tulp believed that cancer was a poison that slowly and gradually spreads and concluded that it absolutely was contagious.[230]
有些肿瘤的治疗和预后与病理分级或浸润深度有关，因此也可以采用其他的一些分期方法。
发热：以低热多见，通常不需处理。典型淋巴瘤患者可有发热、盗汗、体重减轻症状。