Tumor

How metastases develop in the liver

In order to invade healthy tissue, tumor cells must leave the actual tumor and enter the bloodstream or lymphatic system. For this purpose, they use certain enzymes, proteases that break down the tissue surrounding the tumor, ...

Oct 14, 2014
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A tumor or tumour is commonly used as a synonym for a neoplasm (a solid or fluid-filled (cystic) lesion that may or may not be formed by an abnormal growth of neoplastic cells) that appears enlarged in size. Tumor is not synonymous with cancer. While cancer is by definition malignant, a tumor can be benign, pre-malignant, or malignant, or can represent a lesion without any cancerous potential whatsoever.

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