Oncology Terminology Flashcards
neoplasm
new growth (benign or malignant)
tumor
nonspecific; lump or swelling
cancer
any malignant neoplasm (new growth)
hyperplasia
increase in organ or tissue size due to increase in the number of cells
metaplasia
substitution of one adult tissue tyle into another type of adult tissue
dysplasia
an abnormal cellular proliferation in which there is a loss of normal cell architexture
Anaplasia
a loss of structural differentiation; cells dedifferentiate
carcinoma
Epithelial origin: malignant neoplasm of squamous epithelial cell origin
adenocarcinoma
epithelial origin: malignant neoplasm derived from glandular tissue
sarcoma
malignant neoplasm with origin in bone, muscle, or fat
lymphoma/leukemia
malignant neoplasms of blood
melanoma
cancer of pigment producing cells (skin or eye)
Blastoma
malignancies in precursor cells (developing cells in children)
teratoma
germ cell neoplasm made of several differentiated cell/tissue types (in germ/reproductive cells)
staging of carcinomas (solid tumors)
0: no sign of local invasion
I: microscopic invasion of surrounding tissue
II: 4-9 surrounding lymph nodes are involved
III: 10 or more surrounding lymph nodes are involved
IV: distant metastases detected
TNM Staging (T)
TX: cannot be evaluated
T0: No evidence of primary tumor
Tis: abnormal cells present but have not spread to neighboring tissue
T1, T2, T3, T4: size and/or extent of primary tumor
TNM Staging (N)
Lymph node involvement
NX: cannot be evaluated
N0: no regional lymph node involvement
N1, N2, N3: Number and location of lymph node involvement
TNM Staging (M)
Metastases
MX: cannot be evaluated
M0: no distant metastases
M1: distant metastases present
Tumor grading scale
measures level of differentiation of the tumor cells
Gx: cannot be assessed
G1: well differentiated
G2: moderately differentiated
G3: Poorly differentiated
G4: undifferentiated
tumor suppressor genes
produce proteins that block the activity of cyclins
drug efflux pumps
P-glycoprotein, multi-drug resistance associated protein (MRP)
What is the Philadelphia chromosome?
Translocation creating the Bcr-Abl gene (in 95% of CML)
type I kinase inhibitor
binds to ATP binding site in active conformation
type II kinase inhibitor
binds to ATP binding site in the inactive conformation