癌症 Can Be Fun For Anyone
有异常临床症状者应考虑患有癌症的可能，尤其是发现局部肿块者，结合实验室及影像学检查可辅助诊断癌症，但最终明确癌症的类型、分期等信息，需要依靠病理学检查。Experimental cancer treatment plans are analyzed in medical trials to compare the proposed treatment method to the most beneficial current therapy.
Veterinary oncology, concentrating mostly on cats and canine, is actually a rising specialty in rich countries and the key sorts of human treatment for example surgical procedure and radiotherapy can be supplied.
Cancers generally come up from an assemblage of mutations and epimutations that confer a selective edge resulting in clonal enlargement (see Subject defects in progression to cancer). Mutations, having said that, may not be as Repeated in cancers as epigenetic alterations.
机体受到多种因素的共同作用，发生基因异常改变，包括原癌基因激活、抑癌基因失活、多种基因异常的累积等，最终形成癌症。
虽然医生知道哪些因素会增加患癌风险，但大多数癌症会发生于没有任何已知导致癌症的风险因素的人身上。可导致癌症风险增加的已知因素包括：
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
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您可以通过改变这些习惯来降低患癌风险，尽管有些习惯比其他习惯更难改变。
Engraving with two sights of 癌症 a Dutch lady who had a tumor removed from her neck in 1689 Cancer has existed for all of human background.[226] The earliest prepared history relating to cancer is from c. 1600 BC during the Egyptian Edwin Smith Papyrus and describes breast cancer.[226] Hippocrates (c. 460 BC – c. 370 BC) described many styles of most cancers, referring to them Along with the Greek word καρκίνος karkinos (crab or crayfish).[226] This name emanates from the looks of the Reduce surface of the sound malignant tumor, with "the veins stretched on all sides since the animal the crab has its feet, whence it derives its identify".
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Disruption of a single gene may outcome from integration of genomic product from the DNA virus or retrovirus, bringing about the expression of viral oncogenes while in the affected cell and its descendants.
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準確的癌症分期與診斷對於癌症的治療相當重要，癌症治療的原則是先確立治療目標，主要目標則可分為治癒癌症、延長生命、減輕痛苦及安寧療護四大類，常見的治療方式有以下幾項。