Metastatis Cancer

Metastasis Cancer (abbreviated mets), is the spread of a disease from one organ or part to another non-adjacent organ or part. It was previously thought that only malignant tumor cells and infections have the capacity to metastasize; however, this is being reconsidered due to new research.

Cancer occurs after a single cell in a tissue is progressively genetically damaged to produce a cancer stem cell possessing a malignant phenotype. These cancer stem cells are able to undergo uncontrolled abnormal mitosis, which serves to increase the total number of cancer cells at that location. When the area of cancer cells at the originating site becomes clinically detectable, it is called a primary tumor.

Tumor

Tumor 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.

A neoplasm can be caused an abnormal proliferation of tissues, which can be caused by genetic mutations. Not all types of neoplasms cause a tumorous overgrowth of tissue, however (such as leukemia or carcinoma in situ).

Leukemia

Leukemia known as blood cancer is a disease in the classification of cancer (neoplasm) in the blood or bone marrow characterized by the abnormal multiplication or malignant transformation of blood-forming cells in bone marrow and lymphoid tissue, commonly occurs in leukocytes (white blood cells).

Normal cells in the bone marrow are replaced by abnormal cells. These abnormal cells out of the marrow and can be found in the peripheral blood. Leukemic cells affecting hematopoietic or blood cell formation process and the immunity of the patient.