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Cancer Basics (1)
Lots of Definitions
39
Other
Not Applicable
12/07/2012

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Term
exposure to carcinogen leading to cellular damage (irreversible): Activation of proto-oncogenes, oncogenes, inactivation of tumor suppressor genes
Definition
Initiation
Term
Alterations in cellular environment that favor the growth of the mutated cells (reversible)
Definition
Promotion
Term
Mutated cell becomes cancerous; clinically detectable (need amt of tumor burden to detect)
Definition
Conversion
Term
Increased cell proliferation, tumor invasion into tissue, development of metastases
Definition
Progression
Term
normal genes, essential in regulation of normal cellular function
Definition
Proto-oncogenes
Term
Mutant form of a proto-oncogene, play an important role in carcinogenesis
Definition
Oncogenes
Term
Example of an oncogene in breast cancer
Definition
HER-2
Term
Normally regulate and inhibit inappropriate growth and proliferation
Definition
Tumor Suppressor Genes
Term
Example of a tumor suppressor gene that usually activated by damaged DNA
Definition
p53
Term
increase in the size of cells in a specific tissue or organ
Definition
Hypertrophy
Term
increase in number of cells in a specific tissue or organ
Definition
Hyperplasia
Term
Abnormal change in size, shape, or organization
Definition
Dysplasia
Term
abnormal proliferation of cells, may be benign, pre-malignant, or malignant
Definition
Neoplasia
Term
direct migration and penetration into neighboring tissues
Definition
Invasion
Term
cancer cells penetrate into lymphatic system and/or blood vessels and spread from a primary location to a distant site
Definition
Metastasis
Term
cancerous cells release molecules that send signals to surrounding tissue, activating the proliferation of blood vessels which penetrate the tumor, supplying it with oxygen and nutrients
Definition
Angiogenesis
Term
tumors of epithelial and epidermal origin
Definition
carcinomas
Term
cancers of connective tissue origin
Definition
sarcomas
Term
arise in LN and tissue of immune system
Definition
lymphomas
Term
cancers of immature blood cells
Definition
leukemias
Term
time it takes for tumor to double in size, as tumor size increases, this time will increase.
Definition
Doubling time
Term
only a certain percentage of cells will be killed with each chemo course
Definition
cell kill hypothesis
Term
post operative treatment, kill remaining cancer cells and prevent recurrence, goal is to cure
Definition
adjuvant
Term
pre-operative treatment, reduce tumor size prior to surgery
Definition
neoadjuvant
Term
goal is to relieve symptoms, used to slow tumor growth, prolong life, reduce symptoms, and decrease tumor size, may include surgery, radiation, and or chemotherapy, no curative intent
Definition
Palliative therapy
Term
patient is entirely free of disease (usually for at least 5 years) and has an equal life expectancy as a cancer free person
Definition
cure
Term
no evidence of new disease for at least 1 month after treatment
Definition
complete response
Term
50% or greater reduction in tumor size or other objective marker and no evidence of new disease for at least 1 month
Definition
Partial response
Term
tumor size doesn't grow or shrink by more than 25%
Definition
stable disease
Term
25% increase in tumor size or development of new lesions while receiving treatment
Definition
Progression
Term
Tumors are composed of various cell types, combination chemo regimens are important to cover numerous cell types
Definition
Heterogenity
Term
ECOG scale: how strong the patient is 0= fully active, 5 = dead
Definition
Performance status
Term
patient is entirely free of disease (usually for at least 5 years) and has an equal life expectancy as a cancer free
Definition
cure
Term
Oldest treatment available and treatment of choice in early diagnosed solid tumors
Definition
surgery
Term
effective at treating many local tumor types
Definition
radiation
Term
targets rapidly dividing cells, both cancerous and normal
Definition
chemotherapy
Term
systemic treatment designated to more specifically target malignant cells
Definition
biologics, immunotherapy
Term
management of cancers from tissues whose growth is under gonadal hormone control
Definition
hormone therapy
Term
prostate cancer vaccine
Definition
Sipuleucel-T (provenge)
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