ch 19 voccabulary cancer/oncology Flashcards
(130 cards)
Drugs are given after
primary therapy (surgery or radiation).
adjuvant chemotherapy
Adjuvant means to assist
Chemotherapeutic synthetic drugs that cause crosslinks and breaks in DNA
to stop cells from dividing.
alkylating agents
Loss of differentiation of cells; reversion to a more primitive cell type.
anaplasia
Chemotherapeutic drugs found in bacteria and fungi,
which cause breaks in DNA strands to inhibit cell division.
antibiotics
Chemotherapeutic agents that block the synthesis of DNA components (nucleotides)
and prevent cells from dividing.
antimetabolites
Chemotherapeutic chemicals that block the function of a protein necessary for mitosis.
antimitotics
Programmed cell death.
Normal cells undergo ________ when damaged or aging.
apoptosis
If cancer cells lose the ability to undergo apoptosis, they survive indefinitely.
(Apo- means off, away; -ptosis means to fall.)
Noncancerous growth
benign tumor
Radiotherapy that uses insertion of sealed containers into body cavities or radioactive seeds directly into the tumor.
brachytherapy
Agents that cause cancer:
chemicals and drugs, radiation, and viruses.
carcinogens
Cancerous tumor made up of cells of epithelial origin.
carcinoma
Treatment
with drugs
that kill tumor cells.
chemotherapy
Use of several chemotherapeutic agents to treat
tumors.
combination
chemotherapy
Loss of differentiation of cells; reversion to a more primitive, embryonic cell type; anaplasia or undifferentiation.
dedifferentiation
Genetic material within the nucleus of a cell; controls cell division and protein synthesis.
DNAdeoxyribonucleic acid
differentiation
Specialization of cells
Low-energy beams
of radiation for treatment of skin or surface tumors.
electron beams
Surrounded by a capsule; benign tumors are _________
encapsulated
Radiation is applied to a tumor from a source outside the body.
external beam irradiation
fractionation
Giving radiation in small, repeated doses.
Patients and family members are tested to determine whether they have inherited a cancer-causing gene.
genetic screening
Evaluating the degree
of maturity of tumor
cells or degree of differentiation.
grading of tumors
gray (Gy)
Unit of absorbed radiation dose
.
Visual appearance of tumors to the naked eye: cystic, fungating, inflammatory, medullary, necrotic, polypoid, ulcerating, or verrucous.
gross description of tumors