Neoplasia I

Question 1

which part of a tumor is comprised of clonal neoplastic cells?

Answer 1

parenchyma

Question 2

which part of a tumor determines its biological behavior?

Answer 2

parenchyma

Question 3

a tumor derives its name from which component?

Answer 3

parenchyma

Question 4

which part of a tumor is made up of CT, blood vessels, and invading cells?

Answer 4

stroma

Question 5

the growth and evolution of a tumor is determined by what component?

Answer 5

stroma

Question 6

definition: choristoma

Answer 6

normal tissue in a foreign location

Question 7

definition: hamartoma

Answer 7

non-neoplastic tumor-like lesion with disorganized and haphazard growth, but in its normal location

Question 8

what is the most common extranodal site for a primary malignant lymphoma?

Answer 8

stomach

Question 9

what is the most common adult leukemia (and overall leukemia)?

Answer 9

CLL

Question 10

what is the most common childhood leukemia (and cancer)?

Answer 10

ALL (acute lymphocytic leukemia)

Question 11

definition: teratoma

Answer 11

tumor composed of more than one type of parenchymal cell type; derived from more than one germ layer

Question 12

is a mature teratoma benign or malignant?

Answer 12

benign (dermoid cyst)

Question 13

is an immature teratoma benign or malignant?

Answer 13

malignant (teratocarcinoma)

Question 14

what is peutz-jeghers syndrome?

Answer 14

development of benign hamartomatous polyps in GI tract + hyperpigmented macules in oral cavity; autosomal recessive

Question 15

what are the four criteria for differentiating between benign and malignant tumors?

Answer 15

1. rate of growth 2. differentiation and anaplasia 3. local invasion 4. metastasis