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Tumors and Cancer

Tumors and Cancer. Neoplasms: abnormal growth of cells AKA: Tumors 2 types 1. benign – remain localized Malignant – tumors spread to other regions of the body = CANCER. Cancer cells. Not encapsulated Fall away from original neoplasms

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Tumors and Cancer

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  1. Tumors and Cancer

  2. Neoplasms: abnormal growth of cells • AKA: Tumors 2 types 1. benign – remain localized • Malignant – tumors spread to other regions of the body = CANCER

  3. Cancer cells • Not encapsulated • Fall away from original neoplasms • Can start new tumors in other parts of the body, usually migrating using lymph vessels • Metastasis • Can also invade surrounding tissue and replace part of vital organ

  4. Benign Tumors from Epithelial Papilloma – wart like extensions Adenoma Nevus – small pigmented

  5. Benign from connective • Lipoma – adipose • Osteoma – bone • Chondroma - cartilage

  6. Malignant from epithelial • Melanoma – melanocytes – skin • Adenocarcinoma – glandular epithelium

  7. Malignant from connective • Lymphoma – cancer of lymphatic tissue • Osteosarcoma – bone tissue • Myeloma – bone marrow tumor • Fibrosarcoma – involving fibrous connective tissue

  8. Causes of cancer • Mistake in cell division • Genetic factors – oncogenes • Carcinogens – affect genetic activity, mutagens • Age • Environment • Viruses - hpv

  9. Pathogenesis of cancer • Self – examination • Diagnostic imaging • Biopsy • Blood test • Prognosis – statement of probable outcome • Treatments include chemotherapy, radiation therapy, laser therapy andimmunotherapy

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