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NAACCR Data Dictionary
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Version 25
Data Item #3925: Sarcomatoid Features

* indicates required field

Length: 3
Source of Standard: NAACCR
Section Name: Stage/Prognostic Factors
Year Implemented: 2018
Version Implemented: 18
Record Types: A, M, C, I

XML NAACCR ID: sarcomatoidFeatures

Parent XML Element: Tumor

Required Status:

NPCR Collect: . - No recommendations
CoC Collect: RS - Required, site specific
SEER Collect: RS - Required, site specific
CCCR Collect: . - No recommendations

Description:

Sarcomatoid features: present or absent and percentage refers to the observation of sheets and fascicles of malignant spindle cells in a kidney tumor which can occur across all histologic subtypes. The percentage of sarcomatoid component has been shown to correlate with cancer-specific mortality.

Rationale:

Sarcomatoid features for Kidney is a Registry Data Collection Variable in AJCC. It was previously collected as Kidney, CS SSF #4.

Item Data Type:

text

Allowable Values

000, 001-100, R01, R02, R03, R04, R05, XX5, XX6, XX7, XX8, XX9

Codes:

000

Sarcomatoid features not present/not identified

000-100

Sarcomatoid features 1-100%

R01

Sarcomatoid features stated as less than 10%

R02

Sarcomatoid features stated as range 10%-30% present

R03

Sarcomatoid features stated as a range 31% to 50% present

R04

Sarcomatoid features stated as a range 51% to 80% present

R05

Sarcomatoid features stated as greater than 80%

XX5

Sarcomatoid features present from metastatic site only AND
Sarcomatoid features not present in primary site, or unknown if present

XX6

Sarcomatoid features present, percentage unknown

XX7

Not applicable: Not a renal cell carcinoma morphology

XX8

Not applicable: Information not collected for this case
(If this information is required by your standard setter, use of code XX8 may result in an edit error.)

XX9

Not documented in medical record
Sarcomatoid features not assessed or unknown if assessed
No surgical resection of primary site is performed

Code Notes:

Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.