n #

The concept we in BEACH refer to as “n” is identifiable through shortcode ncit:C48884.
In standard vocabularies this shortcode refers to “Generic Regional Lymph Nodes TNM Finding” and is defined as “A finding about one or more characteristics of cancer, following the rules of the TNM AJCC classification system as they pertain to staging of the regional lymph nodes.”

n values #

In BEACH, this concept is recorded as “Nx”, “N0”, “N1”, “N2”, “N3” and “missing_or_unspecified”.

The value we in BEACH refer to as “Nx” is identifiable through shortcode ncit:C48718.
In standard vocabularies this shortcode refers to “NX TNM Finding” and is defined as “A regional lymph node TNM finding indicating that the status of regional lymph nodes cannot be assessed.”

The value we in BEACH refer to as “N0” is identifiable through shortcode ncit:C48705.
In standard vocabularies this shortcode refers to “N0 TNM Finding” and is defined as “A regional lymph node TNM finding indicating that there is no evidence of regional lymph node metastasis.”

The value we in BEACH refer to as “N1” is identifiable through shortcode ncit:C48706.
In standard vocabularies this shortcode refers to “N1 TNM Finding” and is defined as “A general term that refers to a TNM finding of cancer metastases usually in a limited number of regional lymph nodes. The definition of N1 TNM finding depends on the specific type of cancer that it refers to; for example, for breast cancer it refers to micrometastases or metastases in 1-3 axillary lymph nodes; for cutaneous melanoma it refers to metastasis in 1 regional lymph node; for colorectal cancer it refers to metastases in 1-3 regional lymph nodes; and for bladder cancer it refers to metastasis in 1 regional lymph node in the true pelvis.”

The value we in BEACH refer to as “N2” is identifiable through shortcode ncit:C48786.
In standard vocabularies this shortcode refers to “N2 TNM Finding” and is defined as “A general term that refers to a TNM finding of cancer metastases in several regional lymph nodes. The definition of N2 TNM finding depends on the specific type of cancer that it refers to; for example, for breast cancer it refers to metastases in 4-9 axillary lymph nodes; for cutaneous melanoma it refers to metastases in 2-3 regional lymph nodes; for colorectal cancer it refers to metastases in 4 or more regional lymph nodes; and for bladder cancer it refers to metastases in multiple regional lymph nodes in the true pelvis.”

The value we in BEACH refer to as “N3” is identifiable through shortcode ncit:C48714.
In standard vocabularies this shortcode refers to “N3 TNM Finding” and is defined as “A general term that refers to a TNM finding of cancer metastases in multiple lymph nodes. The definition of N3 TNM finding depends on the specific type of cancer that it refers to; for example, for breast cancer it refers to metastases in 10 or more axillary lymph nodes; for cutaneous melanoma it refers to metastases in 4 or more regional lymph nodes; for gastric cancer it refers to metastases in 7 or more regional lymph nodes; and for bladder cancer it refers to metastases in common iliac lymph nodes.”

The value we in BEACH refer to as “missing_or_unspecified” is identifiable through shortcode ncit:C54031.
In standard vocabularies this shortcode refers to “Missing” and is defined as “Not existing; not able to be found.”