1.Explain several reasons for the good prognosis in skin cancer. 2.Ms. T., a 65 year-old woman in good health, presents to her family doctor with a chronic cough. She is currently a non-smoker. A...

1.Explain several reasons for the good prognosis in skin cancer.

2.Ms. T., a 65 year-old woman in good health, presents to her family doctor with a chronic cough. She is currently a non-smoker. A chest x-ray shows a small growth in the right lung. A blood test for lung tumor markers is negative and a bronchoscopy is scheduled to biopsy the tumor. The pathology report indicates the lung tumor is a secondary tumor from the small intestine. Ms. T. is referred to an oncologist for treatment.

(1)What factors in her history indicate a risk of cancer for Ms. T.?

(2)What is the significance of a negative test for tumor markers in this case?

(3) How did the small intestine tumor cells reach the lungs?

(4)What is the probable prognosis for Ms. T.?