tumors and cancer
DESCRIPTION
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 - PowerPoint PPT PresentationTRANSCRIPT
Tumors and Cancer
• Neoplasms: abnormal growth of cells– AKA: Tumors
2 types1. benign – remain localized
2. Malignant – tumors spread to other regions of the body = CANCER
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
Benign Tumors from Epithelial
Papilloma – wart like extensionsAdenomaNevus – small pigmented
Benign from connective
• Lipoma – adipose• Osteoma – bone• Chondroma - cartilage
Malignant from epithelial
• Melanoma – melanocytes – skin• Adenocarcinoma – glandular epithelium
Malignant from connective
• Lymphoma – cancer of lymphatic tissue• Osteosarcoma – bone tissue• Myeloma – bone marrow tumor• Fibrosarcoma – involving fibrous connective
tissue
Causes of cancer
• Mistake in cell division1. Genetic factors – oncogenes2. Carcinogens – affect genetic activity,
mutagens3. Age4. Environment5. Viruses - hpv
Pathogenesis of cancer
• Self – examination• Diagnostic imaging• Biopsy• Blood test– Prognosis – statement of probable outcome– Treatments include chemotherapy, radiation
therapy, laser therapy andimmunotherapy