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Cancer Staging
Histogic Classification
22
Nursing
Undergraduate 1
03/23/2014

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Cards

Term
Grade 1
Definition
cells differ slightly from normal cells (mild dysplasia) and are well differentiated (low grade
Term
Grade 2
Definition
cells are more abnormal (moderate dysplasia) and moderately differentiated (intermediate grade)
Term
Grade 3
Definition
Cells are very abnormal (severe dysplasia) and poorly differentiated (high grade)
Term
Grade 4
Definition
Cells are immature and primitive (anaplasia)and undifferentiated; cells of origin is difficult to determine (high grade)
Term
Grade X
Definition
Grade cannot be assessed
Term
Histologic Grading
Definition
the appearance of cells and the degree of differentiation are evaluated abnormal cells based on the degree to which the cells resemble the tissue of origin.
Term
Staging
Definition
Classifying the extent and spread of the disease.
Term
Stage 0
Definition
cancer in situ
Term
Stage 1
Definition
tumor limited to the tissue of origin; localized tumor
Term
Stage 2
Definition
limited local spread
Term
Stage 3
Definition
extensive local and regional spread
Term
Stage 4
Definition
metastasis
Term
T(o)
Definition
No evidence of primary tumor
Term
T (is)
Definition
Carcinoma in situ
Term
T (1-4)
Definition
ascending degrees of increase in tumor size and involvement.
Term
T (X)
Definition
tumor cannot be measured or found
Term
N (o)
Definition
No evidence of lymph nodes
Term
N (1-4)
Definition
Ascending degrees of nodal involvement
Term
N (X)
Definition
Regional lymph nodes unable to be assessed clinically
Term
M (o)
Definition
No evidence of distant metastases
Term
M(1-4)
Definition
Ascending degrees of metastatic involvement of the host , including distant nodes.
Term
M(x)
Definition
Cannot be determined
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