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A two-millimetre free margin from invasive tumour minimises residual disease in breast-conserving surgery.

Ward, S T and Jones, B G and Jewkes, A J (2010) A two-millimetre free margin from invasive tumour minimises residual disease in breast-conserving surgery. International journal of clinical practice, 64 (12). pp. 1675-80. ISSN 1742-1241. This article is accessible to all HEFT staff and students via NHS Evidence www.evidence.nhs.uk by using their HEFT Athens login Ids

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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1742-...

Abstract

AIMS

In breast-conserving surgery, the width of free margin around a tumour to ensure adequate excision is controversial. The aim of this study was first to evaluate the frequency of residual disease in wider excision specimens in patients who undergo further surgery because of close margins of < 5 mm. Secondly, the ability of demographic and tumour-related factors to predict the close margins was appraised.

PATIENTS AND METHODS

Three-hundred-and-three patients were included in the study. Patients undergoing wider excision were assessed for the presence of residual disease, and this was tested for association with the width of the initial free margin. Various factors were studied for association with close or involved margins by univariate analysis.

RESULTS

Fifty-three per cent of patients were eligible for re-excision based on the need for a 5-mm clearance. With a free margin of 2 mm or more from invasive tumour, the probability of finding residual disease was 2.4%. The probability of residual disease was higher for ductal carcinoma in situ (DCIS) and did not decline with increasing the free margin width. Tumour size, lobular cancer type, vascular invasion and nodal involvement were associated with close margins.

CONCLUSIONS

We suggest that a free margin of 2 mm from invasive tumour is adequate to minimise residual disease, whereas the equivalent free margin for DCIS remains unclear. Patients with large tumours and lobular cancer type should be counselled at the time of first surgery concerning the higher risk of further excision and mastectomy.

Item Type: Article
Additional Information: This article is accessible to all HEFT staff and students via NHS Evidence www.evidence.nhs.uk by using their HEFT Athens login Ids
Subjects: WP Gynaecology. Women’s health
Divisions: Planned IP Care > Oncology and Clinical Haematology
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Depositing User: Mr Philip O'Reilly
Date Deposited: 26 Jun 2014 13:54
Last Modified: 26 Jun 2014 13:54
URI: http://www.repository.heartofengland.nhs.uk/id/eprint/357

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