Introduction to Oncology PHCL 477
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Questions and Answers

What is the definition of neoplasm?

  • Invasion of distant tissues or organs
  • An increase in the number of cells
  • An abnormal mass of tissue resulting from uncontrolled cell division (correct)
  • Abnormal size and shape of cells
  • Which term refers to the lack of differentiation in abnormal cells?

  • Dysplasia
  • Metastasis
  • Hyperplasia
  • Anaplasia (correct)
  • What is the characteristic feature of dysplasia?

  • Invasion of distant tissues or organs
  • Abnormal size and shape of cells (correct)
  • Uncontrolled cell division
  • Increase in number of cells
  • Which of the following best describes metastasis?

    <p>Invasion of distant tissues or organs</p> Signup and view all the answers

    What is the primary characteristic of hyperplasia?

    <p>Increase in number of cells</p> Signup and view all the answers

    Which term refers to the uncontrolled growth and spread of abnormal cells to distant organs?

    <p>Metastasis</p> Signup and view all the answers

    Which term is synonymous to cancer?

    <p>Malignancy</p> Signup and view all the answers

    Which type of tumor has atypical characteristics of tissue of origin and a fatal prognosis if untreated?

    <p>Carcinoma</p> Signup and view all the answers

    What is the characteristic of malignant tumors related to growth?

    <p>Seldom have capsules, growth by infiltration</p> Signup and view all the answers

    Which type of malignancy is associated with epithelial cells?

    <p>Carcinoma</p> Signup and view all the answers

    What is the mutagenic agent that causes DNA damage, increased P53 expression, and G1 arrest for repair in normal cells?

    <p>Mutagenic agent A</p> Signup and view all the answers

    What type of genes stimulate cell division in normal cells?

    <p>Proto-oncogenes</p> Signup and view all the answers

    What does the loss of P53 function lead to in transformed cells?

    <p>Cell growth control</p> Signup and view all the answers

    Which gene turns off cancer in normal cells?

    <p>BRCA 2</p> Signup and view all the answers

    What are the characteristic features of solid malignancies?

    <p>&quot;Fibrous tissue&quot; and &quot;Fatty tissue&quot;</p> Signup and view all the answers

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