Explain the difference in presentation of a right-sided from a ...

[WWatsford]

Explain the difference in presentation of a right-sided from a left-sided colon cancer.
 
  What will be an ideal response?

Question 2

Why are axillary lymph nodes examined when treating a patient with breast carcinoma?
 
  A. To determine whether the tumor is responsive to estrogen
  B. To determine whether the patient should receive estrogenic hormones after the tumor has been resected
  C. To determine whether the tumor has spread beyond the breast
  D. To determine whether the patient has a BRCA1 mutation or a BRCA2 mutation

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Answer to Question 1

Right-sided colon cancer: The proximal half of the colon has a larger caliber compared to the distal half. Carcinoma in the colonic wall does not cause obstruction. However, it can ulcerate and bleed, leading to chronic iron deficiency anemia and the associated symptoms of fatigue and weakness.
Left-sided colon cancer: Distal portion of the bowel has a smaller caliber; a carcinoma in the colonic wall can cause obstruction and passage of goat stool-like stools.

Answer to Question 2

C