Merkel Cell Carcinoma of the Scrotum

Primary Site Histology Staging Type
C632 8247 TNM 7 and Summary Stage

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

C632 Scrotum, NOS **Note 1:** This schema is based on the UICC chapter *Merkel Cell Carcinoma of Skin,* pages 177-180. **Note 2:** In addition to directly assigning TNM, Summary Stage 2000 (SS2000) must be captured. If directly assigning SS2000, use the *Skin Except Eyelid* chapter on page 172 of the [SS2000 on-line manual](https://seer.cancer.gov/tools/ssm/ssm2000/SSSM2000-122012.pdf#page=172).

Main Data Items

Name Default Value Used for Staging NAACCR Item Required By Metadata
Clinical T <BLANK> Yes NAACCR #940
tnmClinT
None
Clinical N <BLANK> Yes NAACCR #950
tnmClinN
None
Clinical M <BLANK> Yes NAACCR #960
tnmClinM
None
TNM Clin Stage Group 99 Yes NAACCR #970
tnmClinStageGroup
None
Pathologic T <BLANK> Yes NAACCR #880
tnmPathT
None
Pathologic N <BLANK> Yes NAACCR #890
tnmPathN
None
Pathologic M <BLANK> Yes NAACCR #900
tnmPathM
None
TNM Path Stage Group 99 Yes NAACCR #910
tnmPathStageGroup
None
SSF1: Measured Thickness (Depth) 988 No NAACCR #2880
csSiteSpecificFactor1
CCCR/Canada
COC
None
SSF16: Size of Metastasis in Lymph Nodes 999 No NAACCR #2870
csSiteSpecificFactor16
CCCR/Canada
COC
SEER
None
SSF17: Extracapsular Extension of Regional Lymph Nodes 999 No NAACCR #2871
csSiteSpecificFactor17
CCCR/Canada
COC
SEER
None
SSF18: Isolated Tumor Cells (ITC) in Regional Lymph Node(s) 999 No NAACCR #2872
csSiteSpecificFactor18
CCCR/Canada
COC
SEER
None
SSF19: Tumor Base Transection Status 988 No NAACCR #2873
csSiteSpecificFactor19
None None
SSF20: Tumor Infiltrating Lymphocytes (TIL) 988 No NAACCR #2874
csSiteSpecificFactor20
None None
SSF21: Growth Pattern of Primary Tumor 988 No NAACCR #2875
csSiteSpecificFactor21
None None
SSF22: Profound Immune Suppression 999 No NAACCR #2876
csSiteSpecificFactor22
CCCR/Canada
COC
SEER
None

Additional Data Items

Name Default Value Used for Staging NAACCR Item Required By Metadata
Year of Diagnosis <BLANK> No NAACCR #390
dateOfDiagnosis
None
Primary Site <BLANK> Yes NAACCR #400
primarySite
None
Histology <BLANK> Yes NAACCR #522
histologicTypeIcdO3
None
Behavior <BLANK> Yes NAACCR #523
behaviorCodeIcdO3
None
RX Summ Systemic/Surgery Sequence <BLANK> Yes NAACCR #1639
rxSummSystemicSurSeq
None
RX Summ Surgery/Radiation Sequence <BLANK> Yes NAACCR #1380
rxSummSurgRadSeq
None
Regional Nodes Positive <BLANK> Yes NAACCR #820
regionalNodesPositive
None

Initial Context

Staging Methods

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TNM 7 Stage

Inclusion Table

Histology
8247

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 Merkel (clin)
  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 Merkel (path)
  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. TNM 7 Stage Group
  2. Clinical Stage Group

Next Step

  1. TNM 7 Path Stage Group
  2. 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
8247

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
    Source M

Next Step

  1. Combined T
  2. Source T
    tmp_combined_t

Next Step

  1. Combined N for Tis Cancers
  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. TNM 7 Combined Stage Group
  2. Combined Stage Group

End

Outputs

Name Default Value Description NAACCR Item Metadata
Derived Version {{ctx_alg_version}} None None
Derived SEER Clin Stage Group 88 NAACCR #3610
derivedSeerClinStgGrp
None
Derived SEER Path Stage Group 88 NAACCR #3605
derivedSeerPathStgGrp
None
Derived SEER Combined Stage Group 88 NAACCR #3614
derivedSeerCmbStgGrp
None
Derived SEER Combined T 88 NAACCR #3616
derivedSeerCombinedT
None
Derived SEER Combined N 88 NAACCR #3618
derivedSeerCombinedN
None
Derived SEER Combined M 88 NAACCR #3620
derivedSeerCombinedM
None
Derived SEER Combined T Source <BLANK> NAACCR #3622
derivedSeerCmbTSrc
None
Derived SEER Combined N Source <BLANK> NAACCR #3624
derivedSeerCmbNSrc
None
Derived SEER Combined M Source <BLANK> NAACCR #3626
derivedSeerCmbMSrc
None