6.4. Cancer - Prostate Cancer Flashcards

1
Q

What is significance of Prostate Cancer?

A
  1. This has the highest new cases of all cancers in men

2. Its prevalence is on the rise

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2
Q

What are the main contributing factor to Prostate Cancer?

A
  1. Age
  2. Race
  3. Geography
  4. Family
  5. Drugs
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3
Q

What is the significance of Age as a Risk Factor for Prostate Cancer?

A

75% of new cases are > 65 years old
45% of new cases are < 70 years old
1% of new cases <50 years old

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4
Q

Which race is prostate cancer more common in?

A

African / Afro-Caribbean men in Western Countries

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5
Q

Where is Prostate Cancer most common?

A

Countries of Western Civilization

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6
Q

What is the significance of Family History as a Risk Factor for Prostate Cancer?

A

Diagnosed 1st degree relatives doubles the risk

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7
Q

What drugs cause increased risk of Prostate Cancer?

A
  1. Alpha Blockers

2. 5-Alpha-Reductase Inhibitors

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8
Q

What are the Clinical Features of Prostate Cancer?

A
  1. Asymptomatic (the Majority)
  2. Benign Prostatic Hyperplasia Symptoms
    a) Lower Urinary Tract Symptoms
    b) Acute / Chronic Urinary Retention
    c) Recurrent UTI’s
  3. Haemospermia/Haematuria
  4. Pain
  5. Renal Failure
  6. Metastatic Symptoms
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9
Q

What are the Lower Urinary Tract Symptoms?

A
  1. Incomplete Emptying
  2. Increased Frequency
  3. Increased Intermittent
  4. Increased
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10
Q

What is Haemospermia?

A

Blood in the Semen

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11
Q

How is the Pain described?

A
  1. Perineal
  2. Suprapubic
  3. Loin (due to the obstruction)
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12
Q

What investigations are required for Prostate Cancer?

A
  1. Screening Triad
    a) Prostate Specific Antigen
    b) Digital Rectal Examination
    c) Trans-Rectal Ultrasound and Prostate Biopsy
  2. CT / MRI
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13
Q

What is purpose of the CT / MRI?

A

For the staging of the cancer

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14
Q

What grading system is used for grading prostate cancer?

A

Gleason Grading System

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15
Q

What is involved in Gleason Grading System?

A
  1. This is ranked from 1 to 5 (well to poorly differentiated)
  2. A combination of the most and second most common grade is used to make a score out of 9
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16
Q

What staging system is used in Prostatic Cancer?

A

TNM Staging

17
Q

What are the different TNM stages? And the life expectancy associated with each

A
  1. T1-2N0M0 - >90% 15 year
  2. T3-4N0M0 - 80-90% 5-year
  3. TxN1M0/TxNxM1 - 3-5 year
  4. Hormone Refreactory Stage (Any) - 18-22 months
18
Q

What are the treatment options for Prostatic Cancer?

A
  1. Watchful Waiting
  2. Radiotherapy (External Beam / Brachytherapy)
  3. Radical Prostatectomy (Open / Laparoscopic / Robotic)
  4. Hormone Replacement Therapy:
    a) Chemical Castration
    b) Anti-Androgens
    c) Oestrogens
19
Q

By what mechanism does Chemical Castration work?

A

Down-rates androgen receptors by negative feedback

20
Q

By what mechanism does Anti-Androgens work?

A

Inhibits androgen receptors

21
Q

By what mechanism does Oestrogens work?

A

Inhibits LHRH and testosterone secretions