Growth Flashcards
What is a polyp?
mass attached to a surface which may or may not be neoplasm
Examples of premaglignant conditions NON-NEOPLASTIC?
chronic inflammation
cirrhosis of liver
chronic ulceratice colitis
xeroderma pigmentosum
What does GRADING mean?
how BAD it LOOks
What does STAGING mean?
how FAR it got
What are problems with tumour grading?
subjective
appearance may vary
What are the 3 main features of tumour staging?
size of primary tumour
extent of lymph node disease
any blood-borne metastasis
What is NEOPLASM?
abnormal mass of tissue
growth of which exceeds normal tissue
carries on at same manner after removal of stimuli
What is NEOPLASIA?
process by which a neoplasm is formed
What is a TUMOUR?
means swelling but conventionally is used as a synonum for neoplasm
How do BENIGN tumours grow?
expansion
displacing
adjacent to tissue
How does a malignant tumour grow?
infiltration of local tissue and spreads to other parts of t body
What is the spread of malignant tumours?
LOCAL - direct invasion
DISTANT - metastasis
What is METASTASIS?
used in 2 ways…
- secondary tumour
- process secondary tumour formed
What is a Secondary Tumour?
‘offspring’ of a primary malignant tumour
What are the routes of METASTASIS?
- lymphatic
- blood
- transcoelomic
- along epithelia, lined spaces
- within epithelium