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10 Cards in this Set
- Front
- Back
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List main features of a Benign Tumour |
1. Well differentiated 2. Slow growth 3. Fibrous Encapsulation 4. Usually one tumour (one spot) 5. ends in -oma |
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List main features of a malignant tumour |
1. Poorly differentiated 2. Rapid growth 3. Invasive 4. Metastatic growth 5. Carcinoma or sarcoma |
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Why can benign tumours be as dangerous as malignant? |
Dependent on the location, the neoplasm can still kill you. It is just more likely the malignant tumour will do it faster. |
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Describe the common sites of metastatic growth |
# Lymphnodes # Liver - Slow moving capillary network # Lungs - Slow moving capillary network # Bones - the flow through bones is very slow and immune cells struggle to pass through bone capillaries delaying immune action. |
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Describe the differences between neoplastic cells and their originating tissue |
Less differentiated, may have abnormalities in chromosomal structure, different proteins on cell membranes, secrete hormones, unusual metabolic pathways |
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Describe Dysplasia |
Controlled cell division, where cells vary in size, shape and appearance and is usually reversible. Eg. Smokers lining of lungs |
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Describe Hyperplasia |
Controlled increase in cell numbers which is usually reversed. Eg. Breast growth during pregnancy |
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Describe Metaplasia |
Controlled and reversible replacement of a cell with another type of cell. Eg. Smokers cilia lining replaced with non ciliated cells |
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Describe Hypertrophy |
Controlled and often reversible increase in cell size. Eg. Kidneys increase in size |
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Describe Atrophy |
A controlled and often reversible decrease in cell (or organ) size. Eg. Muscles of bedridden or inactive people |
