Cancer Flashcards
benign tumors
- cells stay in 1 place and don’t spread
- don’t usually come back after they’re removed
benign doesn’t turn into malignant
malignant tumors
- cells grow into nearby tissues and spread to other parts of the body via blood or lymph
- can still come back after removal
how cancers are named?
- most cancers are named after the part of the body where they start
- other cancers have scientific names
i.e., leukemia, lymphoma and myeloma - some types of cancer are named after the person who first discovered them Hodgkins lymphoma Willms tumor
> > a type of kidney cancer that affects children
hyperplasia
abnormal cells are dividing and increasing in number faster than normal
atypia
cells are slightly abnormal (atypical)
mataplasia
a change to the types of cells that are normally found in this area of the body. The cells look normal but they aren’t the type of cells that are normally found in that tissue or area.
dysplasia
cells are abnormal, there are more cells than
normal, the cells are growing faster than normal, and they aren’t arranged like normal cells
carcinoma in situ
the most severe type of precancerous change
the cells are abnormal but have not grown into
nearby tissue
carcinoma in situ is
usually treated because it has a high risk of developing into cancer
cancer staging
the stage often includes:
- the size of the tumor
- which parts of the organ have cancer
- whether the cancer has spread (metastasized)
- where it has spread
stage 0
indicated that the cancer is where it started (in situ) and hasn’t spread
stage I
the cancer is small and hasn’t spread anywhere else
stage II
the cancer has grown, but hasn’t spread
stage III
the cancer is larger and may have spread to the surrounding tissues and/or the lymph nodes (part of
the lymphatic system)
stage IV
the cancer has spread from where it started to at least one other body organ; also known as “secondary” or “metastatic” cancer
cancer grading
- under a microscope
several factors: - how different the cancer cells look from normal
cells (differentiation) - other features of the tumor such as the size
and shape of the cells and how the cells are arranged - how fast the cells are growing and dividing
- whether there are areas of cell death in the tumor (called necrosis)