Question

3. Which of the following terms refer to a malignant tumor of mesenchymal origin:
a. Carcinoma.
b. Hepatoma.
c. Hematoma
d. Sarcoma.
e. Teratoma.

4. Grading of cancer is based on which of the following statements:
a. Size of the primary tumor.
b. Spread of cancer cells to regional lymph nodes.
c. Presence of blood born metastasis.
d. Degree of differentiation of tumor cells, anaplasia and number of mitosis.
e. Presence of capsular invasion by tumor cells.

Answer 1

Question 3

d. Sarcoma is malignant tumor of mesenchymal origin.

It is malignant tumor which arises from transformed cells that are of mesenchymal origins like connective tissue example bone, muscle and fat, cartilages and skin tissues.

Question 4

d. Degree of differentiation of tumor cells, anaplasia and number of mitosis cell.

First of all we need to understand the difference between Grading and staging. Grade describes the appearance of cells and tissues under microscope, whereas Stage explains the spread of tumors in the body.

So in this all other options are about Stage only D is about Grade.