CS Extension

This input is used for staging

Notes

**Note 1**: Ignore intraluminal extension to adjacent segment(s) of esophagus or to cardia of stomach and code depth of invasion or extra-esophageal spread as indicated. **Note 2**: The three layers of the mucosa (epithelium, lamina propria, and muscularis mucosae) may be called the m1, m2, and m3 layers. The submucosa may be described as having inner, middle, and outer thirds called sm1, sm2, and sm3. **Note 3**: For this schema, AJCC defines Tis as high-grade dysplasia, in which they include "all non-invasive neoplastic epithelium that was formerly called carcinoma in situ". Cancers stated to be noninvasive or in situ are classified as Tis. High grade dysplasia is generally not reportable in cancer registries; but if a registry does collect high grade dysplasia, code 000 should be used. **Note 4**: If the tumor's extension is only described by a phrase like "through the muscularis propria", this could mean that the cancer has penetrated the outermost muscle cells but not beyond (T2); but usually "through the muscularis" is used to indicate that the cancer extends beyond the muscle and into adjacent tissue, consistent with a T3 tumor. When the most specific description is a phrase like "through the muscularis" or "through the esophageal wall", then use code 400 unless a T3 is contraindicated by other information.

Default

999

NAACCR Item

NAACCR #2810
Code Description AJCC 7 T AJCC 6 T Summary Stage 1977 T Summary Stage 2000 T
000 In situ, intraepithelial, noninvasive; high grade dysplasia Tis Tis IS IS
100 Invasive tumor confined to mucosa, NOS (including intramucosal, NOS) T1a T1 L L
110 Invades lamina propria T1a T1 L L
120 Invades muscularis mucosae T1a T1 L L
130 Stated as T1a with no other information on extension T1a T1 L L
160 Invades submucosa T1b T1 L L
165 Stated as T1b with no other information on extension T1b T1 L L
170 Invades lamina propria, muscularis mucosae, or submucosa, with the exact layer not specified

Stated as T1 [NOS] with no other information on extension
T1NOS T1 L L
200 Muscularis propria invaded T2 T2 L L
210 Stated as T2 with no other information on extension T2 T2 L L
300 Localized, NOS T1NOS T1 L L
400 Adventitia and/or soft tissue invaded
Esophagus is described as "FIXED"
T3 T3 RE RE
450 Stated as T3 with no other information on extension T3 T3 RE RE
600 OBSOLETE DATA RETAINED V0200
T4 subclassified in AJCC 7th Edition;
See Codes 610-730

Tumor invades adjacent structures
Cervical esophagus:
Blood vessel(s):
Carotid artery
Jugular vein
Subclavian artery
Thyroid gland
Intrathoracic, upper or mid-portion, esophagus:
Blood vessel(s), major:
Aorta
Azygos vein
Pulmonary artery/vein
Vena cava
Carina
Diaphragm
Main stem bronchus
Trachea
Intrathoracic, lower portion (abdominal), esophagus:
Blood vessel(s):
Aorta
Gastric artery/vein
Vena cava
Diaphragm, not fixed, or NOS
Stomach, cardia (via serosa)
ERROR: T4 RE RE
610 OBSOLETE DATA REVIEWED AND CHANGED V0203
See codes 615, 720, 725

Tumor invades adjacent structures
Cervical esophagus:
Hypopharynx
Jugular vein
Larynx
Thyroid gland

Intrathoracic, upper or mid-portion, esophagus:
Blood vessel(s), major:
Azygos vein
Diaphragm

Intrathoracic, lower portion (abdominal), esophagus:
Blood vessel(s):
Gastric artery/vein
Diaphragm, not fixed, or NOS
Stomach, cardia (via serosa)
Intrathoracic esophagus:
Pleura
ERROR: ERROR: ERROR: ERROR:
615 Tumor invades adjacent structures:
For cervical esophagus:
Hypopharynx
Jugular vein
Larynx
Thyroid gland
For intrathoracic esophagus, upper or middle portion:
Diaphragm
For intrathoracic esophagus, lower portion (abdominal):
Blood vessel(s), major:
Gastric artery/vein
Diaphragm, not fixed; diaphragm, NOS
Stomach, cardia (via serosa)
For intrathoracic esophagus:
Pleura
T4a T4 RE RE
650 OBSOLETE DATA RETAINED V0200
T4 subclassified in AJCC 7th Edition;
See Codes 610-730

Cervical esophagus:
Carina
Cervical vertebra(e)
Hypopharynx
Larynx
Trachea
Intrathoracic esophagus:
Lung via bronchus
Mediastinal structure(s), NOS
Pleura
Rib(s)
Thoracic vertebra(e)
ERROR: T4 RE RE
660 Thoracic/middle esophagus:
Pericardium
T4a T4 RE D
680 Cervical/upper esophagus:
Pleura
Abdominal/lower esophagus:
Diaphragm fixed
T4a T4 D D
700 OBSOLETE DATA CONVERTED V0203
See code 815

Stated as T4 [NOS]
ERROR: ERROR: ERROR: ERROR:
710 Stated as T4a with no other information on extension T4a T4 RE RE
720 Tumor invades adjacent structures:
For intrathoracic esophagus, upper or middle:
Azygos vein
T4b T4 RE RE
725 720 + 615 T4b T4 RE RE
728 720 + 660 T4b T4 RE D
730 Tumor invades adjacent structures
Cervical esophagus:
Blood vessel(s):
Carotid artery
Subclavian artery
Carina
Cervical vertebra(e)
Trachea
Intrathoracic, upper or mid-portion, esophagus:
Blood vessel(s), major:
Aorta
Pulmonary artery/vein
Vena cava
Carina
Trachea
Intrathoracic, lower portion (abdominal), esophagus:
Blood vessel(s):
Aorta
Vena cava
Intrathoracic esophagus (all portions):
Adjacent Rib(s)
Lung via bronchus
Mediastinal structure(s), NOS
Thoracic vertebra(e)
T4b T4 RE RE
740 730 + 660

Any structure in code 730 involving thoracic/middle esophagus plus pericardium
T4b T4 D D
745 730 + 680

Any structure in code 730 involving cervical/upper esophagus plus pleura
OR
Any structure in code 730 involving abdominal/lower esophagus plus fixation of diaphragm
T4b T4 D D
750 Cervical/upper esophagus:
Lung
Main stem bronchus
T4b T4 D D
780 OBSOLETE DATA RETAINED V0200
T4 subclassified in AJCC 7th Edition;
See Code 660

Thoracic/middle esophagus:
Pericardium
ERROR: T4 RE D
800 OBSOLETE DATA RETAINED V0200
T4 subclassified in AJCC 7th Edition;
See Codes 730 and 750

Further contiguous extension:
Cervical/upper esophagus:
Lung
Main stem bronchus
Pleura
Abdominal/lower esophagus:
Diaphragm fixed
ERROR: T4 D D
810 Further contiguous extension

Stated as T4b with no other information on extension
T4b T4 D D
815 Invades adjacent structures, NOS

Stated as T4 [NOS] with no other information on extension
T4NOS T4 RE RE
820 Tumor invades adjacent structures listed in codes 615, 660, 680, or 720, stated as unresectable T4b T4 D D
950 No evidence of primary tumor T0 T0 U U
999 Unknown; extension not stated
Primary tumor cannot be assessed
Not documented in patient record
TX TX U U