理論上，若是以手術完全移除腫瘤細胞，癌症是可以被治癒的。但並非總是如此簡單，外科手術通常無法切除已經轉移到其他部位的癌細胞。使用外科手術治療癌症的例子包括以乳房切除术治療乳癌或是進行前列腺切除術（英语：prostatectomy）治療前列腺癌。手術的目的在於移除腫瘤細胞或是整個器官，雖然將主要的腫瘤經外科手術切除，但仍有些潛伏在腫瘤所生長的器官週遭的單一腫瘤細胞是無法被察覺的。隨著時間過去，又會重新生長成一個新的腫瘤，稱為癌症復發。為此，手術切除下的腫瘤需要經病理學家的檢視，以確定切下的腫瘤週遭都是正常組織，減少腫瘤切除不完全的機會。
需要注意的是，癌症并不是完全无法治愈的疾病！！！尽早进行治疗，治愈癌症的可能性也就越大。
Metastasis is widespread from the late phases of cancer and it can happen by way of the blood or the lymphatic method or both equally. The everyday measures in metastasis are community invasion, intravasation into your blood or lymph, circulation from the human body, extravasation in to the new tissue, proliferation and angiogenesis.
Medical procedures is the primary way of procedure for many isolated, stable cancers and could Participate in a role in palliation and prolongation of survival. It is typically a very important part of the definitive diagnosis and staging of tumors, as biopsies are often demanded.
初次就诊科室与起病症状有关，明确患有癌症者可根据目的到肿瘤科、外科、放疗科等就诊。
Achievable harms from the screening take a look at: as an example, X-ray images require publicity to perhaps harmful ionizing radiation
全身性的症狀：體重減輕、食欲不振、惡病體質、大量出汗（夜間盜汗）、貧血
The key innovation in this article lies in the usage of protein cage nanoparticle-primarily based systems. These units are engineered to hold signals that attract NK cells on to the tumor, overcoming one of the main problems in most cancers immunotherapy: making 癌症 sure the immune cells locate and assault only the most cancers cells with no harming wholesome tissue.
A further mutation in an oncogene may lead to the mobile to breed additional rapidly and much more regularly than its standard counterparts.
症状性癌症的早期诊断在所有环境中并且对大多数癌症都意义重大。癌症规划应旨在减少诊断、治疗和支持性护理方面的延误和障碍。
Taller folks have a heightened chance of cancer since they have much more cells than shorter people. Since top is genetically determined to a considerable extent, taller people have a heritable rise in most cancers hazard.[88]
癌症的存活率，會因腫瘤長的位置、大小、數目及癌症的分期而有不同，一般來說，只要早期發現，治癒率就越高；根據統計，發現許多癌症零期（原位癌）的病人，五年存活率幾乎接近百分之百，不過存活率會隨著期別愈晚而降低。（延伸閱讀：原位癌是什麼？剖析癌症進化史）
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。