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Hematology/ oncology
Exam cards
Question | Answer |
---|---|
Primary Prevention | Smoking cessation, avoid carcinogens, increase high fiber foods, increase foods in carotene. Almost 1/3 of cancers could be prevents with primary prevention |
Secondary prevention | Promote screening and early detection; pap tests, breast and testicular self exams, |
Benign tumors- Not cancerous.(Euploid-23 pairs of chromosomes) | Well differentiated (cells resemble norm. cells), usu. encapsulated (don't infiltrate surrounding tissue), growth is slow, doesn't mets, doesn't cause tissue damage/death. **Only causes prob. if interferes w/ vital functions** |
Malignant tumors- Cancerous. (Anueploid + or - pairs of chromosomes) | Undifferentiated (cells don't resemble norm. cells), spreads to lymph/blood system, growth unpredictable, widespread effects, sends out messengers,uses more energy, Contains protein specific antigens; CEA or PSA |
Metastic Cancer- Spread of malignant cells from primary tumore to distant sites through lymph/blood systems. | Usu. follows a predictable pattern, certain cells bind to specific tissues, can "seed" into other areas, may break off and invade other structures that have enzymes that go out and kill surrounding tissue |
Lymphatic Spread | Most common mechanism of METS |
Hematogenic Spread | Malignant tumors rarely survive turbulence of arterial circulation. Penetrate basement membrane and begin to destroy tissue. |
Angiogenesis | Malignang cells induce growth of new capillaries. Tumor cells are then spread to the blood stream. |
Side effects of Radiation | Cells affected;skin-altered skin integrity, alopecia, erythema. GI tract- stomatitis, change/loss of taste, dec. salivation, N/V, anorexia. Bone marrow- anemia, leukopenia, thrombocytopenia, @risk for inf./bleeding. Systemic- fatigue, malaise, anorexia |