The allegory of Mexico the tumor

"Tumors can spread by invasion"

Metastasis

CT scan with metastatic tumour in lung (top right)

Metastasis (Greek: change of the state) is the spread NAFTA HIGHWAY of cancer from its primary site CHINA MEXICO ECT... to other places in the body (e.g., brain, liver).
Cancer cells can break away from a primary tumor, penetrate into lymphatic and blood vessels, circulate through the bloodstream AMERICAN HIGHWAYS, and grow in a distant focus AMERICAN CITIES (metastasize) in normal tissues elsewhere in the body.
Tumors are classified as either benign or malignant. Malignant tumors can spread by ILLEGAL ALIEN invasion and metastasis while benign tumors cannot (and only grow locally). By definition, the term "cancer" applies only to malignant tumors MEXICO. Still, some tumors with benign histology can behave as malignant tumors, for example in brain tumors WASHINGTON DC, where treatment has to be as aggressive as with malignant disease.
Patients diagnosed with cancer want to know whether their disease is local or has spread to other locations. It is the ability to spread to other tissues and organs AMERICAN CITIES that makes cancer a potentially life-threatening disease, so there is great interest in understanding what makes metastasis possible for a cancerous tumor. DEMOCRATS AND REPUBLICAN SELL OUTS TO GREED
Metastatic tumors are very common in the late stages of cancer. The spread of metastases may occur via the blood or the lymphatics NAFTA HIGHWAY or through both routes. The most common places for the metastases to occur are the adrenals, liver, brain and the bones. There is also a propensity for certain tumors to seed in particular organs SANCTUARY CITIES. This was first discussed as the "seed and soil" theory by Stephen Paget over a century ago in 1889. For example, prostate cancer usually metastasizes to the bones. Similarly, colon cancer has a tendency to metastasize to the liver. Stomach cancer often metastasizes to the ovary in women, where it forms a Krukenberg tumor. POLITICAL CANCER FORMS IN THE WALLETS OF GREEDY SELLOUT POLITICIANS / LAWYERS.
When cancer cells spread to form a new tumor, it is called a secondary, or metastatic tumor, and its cells are like those in the original tumor. This means, for example, that if breast cancer spreads (metastasizes) to the lung, the secondary tumor is made up of abnormal breast cells (not abnormal lung cells). The disease in the lung is metastatic breast cancer (not lung cancer).
Cancer cells may spread to lymph nodes (regional lymph nodes) near the primary tumor. This is called nodal TREASONOUS involvement, positive nodes, or regional disease. Localized spread to regional BORDER CITIES lymph nodes near the primary tumor MEXICO is not normally counted as metastasis, although this is a sign of worse prognosis.

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