L1:general aspects of neoplasia

Question 1

what is a neoplasm ?

Answer 1

growth of tissue made up of cells that continue to grow autonomously even after the stimulus for proliferation is removed

Question 2

what are the 2 types of tumors and how are they different ?

Answer 2

benign tumors: grow locally and slowly , while compressing nearby tissue .

malignant tumors grow into adjacent tissue and can spread to other parts of the body

Question 3

what is the structure that surrounds benign tumors called ?

Answer 3

fibrous capsule

Question 4

what is the level of differentiation of benign tumor cells?

Answer 4

they are well differentiated and resemble the tissue from which they arise

Question 5

what is the level of differentiation of malignant tumor cells ?

Answer 5

they fail to differentiate and may not resemble the tissue from which they arise

Question 6

what term is used to describe loss of uniform shape when describing tumor cells ?

Answer 6

pleomorphism

Question 7

what is metastasis ?

Answer 7

tumor implants in distant sites due to spread from original site

Question 8

where do malignant tumors commonly metastasize to ?

Answer 8

liver and lungs through blood stream

Question 9

what pathways could malignant tumors pass through in order to metastasize ?

Answer 9

lymph vessels
blood vessels
body cavities