cancer Flashcards
What is cancer staging?
The process to assess the extent to which the tumour has developed
What is the criteria used in staging
Extent of tumour growth
How it has extended into local tissues
Where lymph nodes are involved- location and number
Has it spread to distant sites
what is TMN
internationally recognized cancer staging system
what does TMN stand for
Tumour
lymph Node involvement
Metastasis
What is metastasis?
it is a measure of the spread of the cancer.
describe In situ in relation to the staging of cancer
Abnormal cells are present and have not spread to nearby tissue
describe localised in relation to the staging of cancer
cancer is limited to the place where it started, has no sign of spreading
describe Distant in relation to the staging of cancer
cancer has spread to distant parts of the body
describe Unknown in relation to the staging of cancer
not enough information to figure out the stage
what are the 2 pathways to a cancerous cell?
Epigenetic alterations
Genetic alterations
what are epigenetic alterations?
changes in DNA methylation or acetylation and gene expression
What are genetic alterations?
DNA mutation and faulty protein formation.
the impact of cell division
Name some mutations that affect genes and whole chromosomes
Frame-shift, nonsense, mis-sense
translocation
Inversion
Insertion
Deletion
Amplifications
what are the 4 hallmarks of cancer
continuous replication and increase in cell numbers
creation of tumour microenvironment
ability to metastasise
Genome instability leading to intertumoral hetrogeneity
5 main routes of cancer metastases
local invasion
Lymphatic system
cardiovascular system (CCC)
perineural via nerve bundles
Peritoneal fluid