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Pathology 3-3
Duke PA pathology
Question | Answer |
---|---|
Which mechanisms of disease caused by tumors cause pain? | tissue destruction, organ compression |
Staging catergorizes malignant tumors based on what? | potential for invasion and metastasis |
Tumor grading is based on what? | histologic examination of the tumor, provides estimated degree of malignancy |
TMN system | tumor staging |
T in TMN system | reflects size of tumor |
N in TMN system | reflects lymph node involvement |
M in TMN system | reflects the extent of metastasis |
In tumor staging, which number indicates a better prognosis? | lower |
Who performs tumor grading? | pathologist |
Is grading system the same for all tumors? | no - differs according to tumor type |
Grade I tumor | well-differentiated, low anaplasia |
Grade II, III tumor | intermediate differentiation |
Grade IV tumor | poorly differentiated; high anaplasia |
Major therapeutic modalities for cancer | surgery, radiation, chemo, immunotherapy, molecularly-based therapy, combination therapy |
What is the 3rd most common cancer in incidence and mortality? | colorectal cancer |
What percent of colorectal cancer has hereditary component? | 15-50 percent |
What percent of colorectal cancer is due to known mutations? | roughly 15 percent - FAP, HNPCC |
Can tobacco cause colon cancer? | yes |