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Malignant neoplasms
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Composed of cells that do not necessarily resemble the tissue in which they are growing. Nonencapsulated masses that grow and spread more relentlessly and may become life threatening.
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Benign neoplasms
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New growths that develop in body tissues. Composed of the same type of cells as the tissue in which they are growing. Contained within a capsule.
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Causes of cancer:
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Radiation, virus', chemicals, genetic factors, diet, hormones, immune factors.
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Metastasis
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The process by which tumor cells spread to different parts of the body. This distinguishes cancer cells from benign neoplasms.
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Carcinoma
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Solid tumor, most common type of cancer and includes cells of the skin, gastrointestinal system, and lungs.
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Sarcoma
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Cancer cells affecting connective tissue - inclusing fat, the sheath that contains nerves, cartilage, muscle, and bone.
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Histogenesis
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Classification for various type of tumors, four major groups are classified according to the type of body tissue in which they originate.
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Staging & tumor grading
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Used to determine the size of a tumor and the existence of metastasis. System which refers to the degree of abnormality of cancer cells compared with normal cells.
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TNM staging system
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Most commonly used system for staging tumors. T refers to size and extent of primary tumor, N indicates the number of area lymph nodes involved, and M refers to any matastasis of the primary tumor. Subscript number is used to indicate the size or spread of the tumor.
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Aden/o, aden/o/carcin/oma
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Gland, malignant tumor of glandular epithelium
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Carcin/o, carcin/o/genesis
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Cancer, forming, producing, or origin.
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Chem/o, chem/o/therapy
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Chemical, drug. treatment of disease by means of chemical substances or drugs.
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Onc/o, onc/o/logy
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Tumor, study of tumors.
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Sarc/o, sarc/oma
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Fresh, connetive tissue. A malignant tumor of connective tissue.
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Ana-, ana/plasia
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Without, not, loss of cellular differentiation (formation/growth)
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