癌症:
症状
癌症的典型症状是体重迅速下降;疣或痣的变化;疼痛不能痊愈;吞咽困难;慢性沙哑，痰、尿、便带血(血管生成的结果);慢性腹痛;睾丸变化:睾丸大小或形状的变化;排便习惯的改变;乳房肿块;还有不寻常的阴道出血。 Many of these and other symptoms are often nonspecific, e.g., weakness, loss of appetite, and weight loss, and thus are not obvious in the early stages. Sometimes the side effects of tumor growth are more severe than the actual effects of the malignancy; for example, some tumors secrete materials such as serotonin and histamine that can cause drastic vascular changes. Conversely, cancers that destroy tissue may also have serious effects, e.g., malignant destruction of bone tissue may raise the blood level of calcium.
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哥伦比亚电子百科全书，版权所有©2012，哥伦比亚大学出版社。版权所有。
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