Cancer treatment—distance of closest surgical margin, total millimetres N[N]
Data Element Attributes
Identifying and definitional attributes | |
Metadata item type: | Data Element |
|---|---|
| Short name: | Closest surgical margin |
| METEOR identifier: | 430295 |
| Registration status: | Health, Standard 08/05/2014 |
| Definition: | The distance of the closest surgical margin from the invasive or in situ carcinoma after surgical cancer treatment, measured in millimetres. |
| Data Element Concept: | Cancer treatment—distance of closest surgical margin |
| Value Domain: | Total millimetres N[N] |
Value domain attributes | ||
Representational attributes | ||
| Representation class: | Total | |
|---|---|---|
| Data type: | Number | |
| Format: | N[N] | |
| Maximum character length: | 2 | |
| Value | Meaning | |
| Supplementary values: | 97 | Not applicable |
| 98 | Unknown | |
| 99 | Not stated/inadequately described | |
| Unit of measure: | Millimetre (mm) | |
Collection and usage attributes | |
| Guide for use: | Size in millimetres with valid values from 1 to 96. |
|---|---|
Source and reference attributes | |
| Submitting organisation: | Cancer Australia |
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Data element attributes | |
Collection and usage attributes | |
| Guide for use: | Surgical margins represent sites that have either been cut or bluntly dissected by the surgeon to resect the specimen. Record the distance of the closest surgical margin to the invasive or in situ carcinoma as described in the pathology report. Where two or more margins are reported, only the closest should be recorded. Record only for the most definitive surgical procedure performed. For instance, if a surgical procedure to remove a portion of tumour at the primary site is followed by additional surgery to remove the remainder of the tumour at that site, code the distance of the margin for the final surgical procedure. Record for the primary tumour site only, not for metastatic sites. When the margin is described as positive (i.e. cancer cells come to the edge of the removed tissue) record "00". When surgery was not performed record "97", when it is unknown whether surgery was performed record "98", and when surgery was performed but the margin was not described record "99". |
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| Collection methods: | This information should be sought from the patient's pathology report under microscopic findings. |
| Comments: | The distance of the closest margin is useful for surgical audit and for assessing the completeness of surgical resection. Margin involvement may influence treatment decisions and is a prognostic indicator. |
Source and reference attributes | |
| Submitting organisation: | Cancer Australia |
| Reference documents: | Royal College of Pathologists of Australasia 2010. Lung cancer structured reporting protocol. 1st Edition (Version 1.0). Surry Hills, NSW: Royal College of Pathologists of Australasia American College of Surgeons 2002. Facility Oncology Registry Data Standards (FORDS), 2011 revision. Commission on Cancer, page 211 |
Relational attributes | |
| Related metadata references: | See also Cancer treatment—lung cancer surgical margin qualifier, code N[N] Health, Standard 08/05/2014 |
| Implementation in Data Set Specifications: | Lung cancer (clinical) DSS Health, Superseded 14/05/2015 Conditional obligation: Collect when a person with cancer has undergone surgery during their initial course of cancer treatment for the purpose of removing cancer (either invasive or in situ). Lung cancer (clinical) NBPDS Health, Standard 14/05/2015 Conditional obligation: Collect when a person with cancer has undergone surgery during their initial course of cancer treatment for the purpose of removing cancer (either invasive or in situ). |