Lymph Nodes Lung Cancer | Medical Algorithm

Description

The International Association for the Staging of Lung Cancer (IASLC) has proposed a new mapping for regional lymph nodes draining the lung. The pattern of involvement determines the N stage for a patient's lung cancer.

Tumor Ipsilateral to Affected Lymph Nodes

Number	Name	Zone	Nodal Group	Side	N code
14	Subsegmental	Peripheral	N1	ipsilateral	N1
13	Segmental	Peripheral	N1	ipsilateral	N1
12	Lobular	Peripheral	N1	ipsilateral	N1
11	Interlobar	Hilar/interlobar	N1	ipsilateral	N1
10	Hilar	Hilar/interlobar	N1	ipsilateral	N2
9	Pulmonary ligament	Lower	Inferior mediastinum	ipsilateral	N2
8	Para-eseophageal	Lower	Inferior mediastinum	ipsilateral	N2
7	Subcarinal	Subcarinal	Inferior mediastinum	ipsilateral	N2
6	Para-aortic (ascending aorta, phrenic)	Aortic	Aortic	ipsilateral	N2
5	subaortic	Aortic	Aortic	ipsilateral	N2
4	Lower paratracheal	Upper zone	Superior mediastinum	ipsilateral	N2
3	Retrotracheal	Upper zone	Superior mediastinum	ipsilateral	N2
2	Upper paratracheal	Upper zone	Superior mediastinum	ipsilateral	N2
1	Low cervical, supraclavicular, sternal notch	Supraclavicular		ipsilateral	N3
	Scalene, other regional	NA		ipsilateral	N3

Tumor Contralateral to Affected Lymph Nodes

Number	Name	Zone	Nodal Group	Side	N code
14	Subsegmental	Peripheral	N1	contralateral	N3
13	Segmental	Peripheral	N1	contralateral	N3
12	Lobular	Peripheral	N1	contralateral	N3
11	Interlobar	Hilar/interlobar	N1	contralateral	N3
10	Hilar	Hilar/interlobar	N1	contralateral	N3
9	Pulmonary ligament	Lower	Inferior mediastinum	contralateral	N3
8	Para-eseophageal	Lower	Inferior mediastinum	contralateral	N3
7	Subcarinal	Subcarinal	Inferior mediastinum	contralateral	N3
6	Para-aortic (ascending aorta, phrenic)	Aortic	Aortic	contralateral	N3
5	Subaortic	Aortic	Aortic	contralateral	N3
4	Lower paratracheal	Upper zone	Superior mediastinum	contralateral	N3
3	Retrotracheal	Upper zone	Superior mediastinum	contralateral	N3
2	Upper paratracheal	Upper zone	Superior mediastinum	contralateral	N3
1	Low cervical, supraclavicular, sternal notch	Supraclavicular		contralateral	N3
	Scalene, other regional	NA		contralateral	N3

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Description

Specialty

Objective

ICD-10

N Stage for Lung Cancer and IASLC Lymph Node Map

Purpose: To evaluate involvement of lymph nodes in a patient with lung cancer using the IASLC node map and N stage.

Description

Specialty

Objective

ICD-10