EsophagusGEJunction

Primary Site Histology Schema Discriminator: EsophagusGEJunction (EGJ)/Stomach Staging Type
C160 8000-8152, 8154-8231, 8243-8245, 8247-8248, 8250-8576, 8940-8950, 8980-8981 <Any value> TNM 7 and Summary Stage
C160 8577-8934, 8951-8979, 8982-9136, 9141-9582, 9700-9701 <Any value> Summary Stage only
C161-C162 8000-8152, 8154-8231, 8243-8245, 8247-8248, 8250-8576, 8940-8950, 8980-8981 020, 040, 060 TNM 7 and Summary Stage
C161-C162 8577-8934, 8951-8979, 8982-9136, 9141-9582, 9700-9701 020, 040, 060 Summary Stage only

If you are working with a site/histology that only summary stages and you need to directly code it, please use the SEER Summary Stage 2000 manual

Notes

C160 Cardia, esophagogastric junction (EGJ) C161 Fundus of stomach, proximal 5 centimeters (cm) only C162 Body of stomach, proximal 5 cm only **Note 1:** This schema is based on the UICC chapter *Oesophagus including Oesophagogastric Junction,* pages 66-72. * Primary sites C161 and C162 are not listed in this chapter of the UICC manual; however, they are included in this schema and TNM staged if appropriate histology criteria are met * **Site-Specific Factor 25, Schema Discriminator: EsophagusGEJunction (EGJ)/Stomach** is used to discriminate between esophagusGEjunction and stomach which are coded to ICD-O-3 codes C160-C162. **Note 2:** The cardia/EGJ and the proximal 5 cm of the fundus and body of the stomach have been removed from the Stomach chapter and added to the Esophagus chapter effective with TNM 7th Edition. Due to differences between the schemas for Esophagus and Stomach, a new schema was created in 2010 accommodate these changes. Since primary site codes C161 (fundus of stomach) and C162 (body of stomach) can be assigned to either schema, EsophagusGEJunction or Stomach, a schema discriminator field is needed for the staging algorithm to determine which schema to select. In TNM 7th Edition, cancers with a midpoint in the lower thoracic esophagus, in the EGJ, or within the proximal 5 cm of the stomach (cardia) and extending into the EGJ or esophagus, are staged similarly to cancers of the esophagus. All other cancers with a midpoint in the stomach greater than 5 cm distal to the EGJ, or those within 5 cm of the EGJ but not extending into the EGJ or esophagus, are staged using the gastric cancer staging system. **Note 3:** Effective with TNM 7th Edition * Histologic grade is required for stage grouping * There are separate stage groupings for squamous cell carcinoma and adenocarcinoma. Since squamous cell carcinoma typically has a poorer prognosis than adenocarcinoma, a tumor of mixed histopathologic type or a type that is not otherwise specified should be classified as squamous cell carcinoma **Note 4:** In addition to directly assigning TNM, Summary Stage 2000 (SS2000) must be captured. If directly assigning SS2000, use the *Esophagus* chapter on page 74 of the [SS2000 on-line manual](http://seer.cancer.gov/tools/ssm/SSSM2000-122012.pdf#page=74).

Main Data Items

Additional Data Items

Name Default Value Used for Staging NAACCR Item Required By Metadata
Year of Diagnosis <BLANK> No NAACCR #390 None
Primary Site <BLANK> Yes NAACCR #400 None
Histology <BLANK> Yes NAACCR #522 None
Behavior <BLANK> Yes NAACCR #523 None
RX Summ Systemic/Surgery Sequence <BLANK> Yes NAACCR #1639 None
RX Summ Surgery/Radiation Sequence <BLANK> Yes NAACCR #1380 None
Regional Nodes Positive <BLANK> Yes NAACCR #820 None

Initial Context

Staging Methods

Expand All | Collapse All

TNM 7 Stage

Inclusion Table

Histology
8000-8152
8154-8231
8243-8245
8247
8248
8250-8576
8940-8950
8980-8981

Start

Additional Context
Clinical Stage Group = 90
Pathologic Stage Group = 90

Next Step

  1. Parse T
  2. clin_t_prefix
    tmp_clin_t

Next Step

  1. Parse N
  2. clin_n_prefix
    tmp_clin_n

Next Step

  1. Parse M
  2. tmp_clin_m
    clin_m_prefix

Next Step

  1. Parse T
  2. tmp_path_t
    path_t_prefix

Next Step

  1. Parse N
  2. tmp_path_n
    path_n_prefix

Next Step

  1. Parse M
  2. tmp_path_m
    path_m_prefix

Next Step

  1. Determine Default T
  2. Source T
    tmp_path_t
    tmp_clin_t
    tmp_combined_t

Next Step

  1. Determine Default N
  2. tmp_combined_n
    tmp_clin_n
    tmp_path_n
    Source N

Next Step

  1. Determine Default M
  2. tmp_path_m
    tmp_combined_m
    tmp_clin_m
    Source M

Next Step

  1. Histologies Stage
  2. stage_table
    Clinical Stage Group

Next Step

  1. Histologies Path Stage
  2. stage_table
    Pathologic Stage Group

Next Step

  1. Adjustments for No Clin or No Path
  2. tmp_combined_n
    tmp_combined_m
    Source T
    Clinical Stage Group
    Pathologic Stage Group
    Source N
    tmp_combined_t
    Source M

End

Combined Stage

Inclusion Table

Histology
8000-8152
8154-8231
8243-8245
8247
8248
8250-8576
8940-8950
8980-8981

Start

Additional Context
Combined M = 90
Combined N = 90
Combined Stage Group = 90
Combined T = 90

Next Step

  1. Stop if No Clin and No Path
  2. Combined M
    Combined N
    Source T
    tmp_continue
    Combined T
    Combined Stage Group
    Source N
    ss2017
    Source M

Next Step

  1. Combined T
  2. Source T
    tmp_combined_t

Next Step

  1. Combined N
  2. tmp_combined_n
    Source N

Next Step

  1. Combined M
  2. tmp_combined_m
    tmp_source_m
    Source M

Next Step

  1. Determine Combined Prefix
  2. cmb_t_prefix

Next Step

  1. Determine Combined Prefix
  2. cmb_n_prefix

Next Step

  1. Determine Combined Prefix
  2. cmb_m_prefix

Next Step

  1. Concatenate T
  2. Combined T

Next Step

  1. Concatenate N
  2. Combined N

Next Step

  1. Concatenate M
  2. Combined M

Next Step

  1. Histologies Path Stage
  2. stage_table
    Combined Stage Group

End

Outputs

Name Default Value Description NAACCR Item
Derived Version {{ctx_alg_version}} None
Derived SEER Clin Stage Group 88 NAACCR #3610
Derived SEER Path Stage Group 88 NAACCR #3605
Derived SEER Combined Stage Group 88 NAACCR #3614
Derived SEER Combined T 88 NAACCR #3616
Derived SEER Combined N 88 NAACCR #3618
Derived SEER Combined M 88 NAACCR #3620
Derived SEER Combined T Source <BLANK> NAACCR #3622
Derived SEER Combined N Source <BLANK> NAACCR #3624
Derived SEER Combined M Source <BLANK> NAACCR #3626