Top 癌症 Secrets

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体重减轻。癌症和癌症治疗可能导致体重减轻。癌症肿瘤会夺取正常细胞的营养。这通常不受摄入多少卡路里或吃哪类食物的影响，而且难以治疗。在大多数情况下，通过管子将人工营养输入胃或静脉中并不能帮助改变体重减轻的状况。

确定治疗目标是重要的第一步。主要目标通常是治愈癌症或显著延长生命。改善患者的生活质量也是一项重要目标。这可通过为患者提供身体、社会心理和精神健康支持以及在癌症末期提供姑息治疗来实现。

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：

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化学致癌物，例如石棉、烟草烟雾成分、酒精、黄曲霉毒素（一种食品污染物）、 砷（一种饮水污染物）、烷化剂、酰化剂、亚硝胺类、芳香胺、环氧化物等；巴豆油、 激素、酚类等物品，会增加致癌物质的效应。

单个基因异常不能使细胞完全向恶性转化，多种原癌基因激活、抑癌基因失活作用累积，最终导致恶性肿瘤的发生。

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。

Elective abortions will not be required and, for the most common 癌症 kinds and levels of most cancers, don't improve the mother's survival.

Treatment method is usually similar to for non-pregnant Women of all ages. Having said that, radiation and radioactive prescription drugs are Commonly avoided during pregnancy, particularly if the fetal dose may well exceed a hundred cGy. In some instances, some or all treatment options are postponed until immediately after delivery if the most cancers is diagnosed late from the pregnancy.

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。

术前要综合评估恶性肿瘤侵及层次、范围以确定手术方式及切除范围，应尽可能争取将肿物完全切除，减少转移的可能，术后标本应送病理明确肿瘤类型、分期、有无转移等信息，以指导术后治疗。