Tumors

Question 1

Cell characteristics

Answer 1

BENIGN- well differentiated cells that resemble cells in tissue of origin

MALIGNANT- Undifferentiated cells, does not look like cells in tissue of origin

Question 2

Rate of growth

Answer 2

BENIGN- Progressive and slow, may stop and regress

MALIGNANT- More rapid rate of growth

Question 3

Mode of growth

Answer 3

BENIGN- Grows by expansion without invading surrounding tissue.

MALIGNANT- Grows by invasion, infiltrating the surrounding tissue

Question 4

Metastasis

Answer 4

BENIGN- Does not spread by metastasis

MALIGNANT- Gains access to blood and lymph channels