CBCL 5 Pre-work Flashcards

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1
Q

The action of which of following proteins can suppress cancer metastasis?

  1. KRas
  2. p53
  3. Myc
  4. β-catenin
A
  1. p53
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2
Q

A palliative measure for patients with ovarian cancer and debilitating ascites is to drain the ascites directly into the venous circulation. Despite this, investigators rarely if ever observe pulmonary metastases on post-mortem examination. This observation supports which of the following notions regarding the mechanisms of metastasis?

  1. Seed and soil hypothesis
  2. Involvement of cancer stem cells
  3. Involvement of epithelial-mesenchymal transition
  4. Critical need for angiogenesis
A

Seed and soil hypothesis

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3
Q

Which of following is a typical property of cancer stem cells?

  1. Rapid proliferation
  2. Self-renewability
  3. Sensitivity to chemotherapy
  4. Low metastatic potential
A

Self-renewability

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4
Q

Millions of circulating tumor cells are routinely found in the circulation. If the patient does not develop metastases, the inability of these cells to perform which of the following actions might be responsible.

  1. Transformation
  2. Motility
  3. Invasion
  4. Extravasation
A
  1. Extravasation
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5
Q

Following surgical resection of a hepatocellular carcinoma with a primary tumor 3 cm in diameter, tumors were also found in lymph nodes surrounding the liver. No distant metastasis was found. Which of following is appropriate to describe the clinical staging of this patient’s tumor?

  1. T2N1M0
  2. T0N1M0
  3. T1N1M1
  4. T4N1M0
A
  1. T2N1M0
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6
Q

Which of following is a typical feature of the epithelial-to-mesenchymal transition (EMT)?

  1. Gain of baso-apical polarity
  2. Decreased potential of invasion
  3. Increased expression of transcription factors, Snail and Twist
  4. Increased cell-cell junctions
A

Increased expression of transcription factors, Snail and Twist

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7
Q

Which of following is considered to be a major factor influencing the specific sites of metastasis?

  1. Gender
  2. Specific hormone receptor expression on cancer cells
  3. Immune cells recruited to the primary tumors
  4. Blood flow characteristics and the structure of the vascular system
A
  1. Blood flow characteristics and the structure of the vascular system
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