癌症 - An Overview

腫瘤較小且尚未擴散/轉移(癌細胞可被定位、手術移除,不需借助循環全身的化學藥物治療)

When your Tesla’s battery warranty expires, you may well be to blame for the cost of any repairs or replacements. Nevertheless, Tesla provides quite a few selections for extending battery coverage or controlling prospective repair service expenses:

This protection begins from the date that the car or truck is delivered and extends for a single year or 12,five hundred miles, whichever will come 1st. The next components receive for a longer period coverage:

Tesla may refuse to address autos which were salvaged or published off as a total reduction by a car or truck insurance provider. This may involve cars and trucks which have been stolen or normally have title concerns related to their vehicle identification range (VIN).

癌症篩檢的爭議在於檢驗是否的確能夠延長生命,由於癌症的治療方法多半具有侵入性及對身體造成很大負擔,因為早期發現而進行治療反而不一定比完全不治療好。例如,在進行前列腺癌篩檢時,攝護腺抗原血液檢驗可偵測到極微小的腫瘤,但是或許終其一生,這樣的腫瘤並不會成為危及生命的問題。只是一旦經篩檢發現,一般都會進行進一步的檢驗及診療。因此就有可能發生過度診斷(英语:overdiagnosis)的問題,而將病患放入不必要的併發症的風險中,如手術或放射治療的副作用與感染。用於確定診斷前列腺癌所做的前列腺組織切片可能引起的副作用,包括出血和感染。前列腺癌的治療則可能導致尿失禁、勃起功能障礙。同樣地,對於乳癌的篩檢上,近來也有批評認為在一些國家所進行的乳房篩檢計畫所引起問題遠超過所解決的。因為在一般婦女身上做篩檢,產生許多因為陽性或假陽性結果而需要做更精確檢驗的婦女,造成醫療資源的大量浪費,也帶給假陽性者的沉重心理負擔。而這樣大規模的檢驗,最後往往只是找出幾個早期乳癌患者,所耗費的社會成本是值得討論的。

根據組織診斷可判定腫瘤的生長程度,其病程的分級和其他腫瘤特徵。這樣的資訊對於判斷病患的預後情形和選擇最佳治療方式上非常有用。細胞遺傳學和免疫組織化學染色法對於提供有關癌細胞未來可能的發展情況以及選擇治療方式上,都佔有相當重要的角色。

常规体检项目(如血常规、肝肾功能)不等于癌症筛查,早期癌症往往没有明显异常。

不斷增生的癌細胞撐破腫瘤,癌細胞因而擴散至腫瘤周遭的組織及鄰近的淋巴結甚至更遠處。此時癌細胞流竄於原始病灶附近,必需藉助循環全身的化學治療藥物治療。

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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。

肿瘤在其生长过程中,虽然能够暂时通过建立新生血管解决自身给养问题,但是快速的增长一样会将之推向资源和空间匮乏的边缘。隨著腫瘤細胞持續生長,在這樣競爭的壓力下,这时肿瘤就会扩散。而这种肿瘤在生长过程中侵略性不断增加的过程则被称为演进(progression)。具体的行为则是生长的加快,并且开始入侵周遭的正常组织(癌症浸润),并且通过血管转移到远端(癌症转移)。

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Tesla delivers an extensive battery and push device warranty that gives protection towards defects in products and workmanship. This warranty is built to protect you from unpredicted repair charges related to the battery pack, and that is a significant investment ?? in An electrical automobile.

物理致癌物,例如紫外线和电离辐射;而异物刺激、创伤、慢性炎症等会促进恶变进程。

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