Trial Comparing Radioactive Seed Localization to Standard Procedure for Non-palpable Breast Cancers

Not Applicable

Completed

• Conditions: Breast Cancer Invasive Nos; Stage 0 Breast Carcinoma

• Registration Number: NCT00225927
• Lead Sponsor: McMaster University

Brief Summary

The purpose of this study is to determine whether a new surgical technique (radioguided seed localization) for localizing nonpalpable breast tumours is better than the standard technique (needle localization).

Detailed Description

Most breast cancers are removed by partial mastectomy/lumpectomy. The most important factor in ensuring that the cancer does not return in the breast is to ensure that it is completely removed during surgery. Complete removal is dependent on having a rim of normal tissue (clear margin) surrounding the cancer. If the margin is positive, or the cancer recurs, more surgery or mastectomy is required. Approximately one third of breast cancers are detected by mammograms or ultrasounds and cannot be felt by patients or physicians. Accordingly, a localization technique is required to help the surgeon to find and remove the cancer. The current technique (needle localization) has a higher chance of having cancer cells at the margin. This is a study about a surgical technique. The objective of this comparison study is to determine whether a new technique (radioguided seed localization) is a better way to remove nonpalpable breast cancers. The main objective of this study is to determine if the new technique generates fewer positive margins compared to the standard technique. An improved technique would benefit thousands of women every year.

Study Timeline

• Study Start: 2004-06
• Study First Submitted: 2005-09-16
• Study First Submitted QC: 2005-09-23
• Study First Posted: 2005-09-26
• Status Verified: 2010-03
• Primary Completion: 2010-03
• Study Completion: 2010-06
• Last Update Submitted: 2011-02-28
• Last Update Posted: 2011-03-02

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 333

Inclusion Criteria

• Histologically confirmed invasive or in situ breast carcinoma
• Nonpalpable breast tumour
• Candidate for breast conserving surgery (BCS) based on clinical and radiologic evaluation

Read More

Exclusion Criteria

• Histological confirmation more than 3 months from enrollment
• Pregnancy or lactation
• Contraindication to BCS or patient requests mastectomy
• Age less than 18 years
• Male patient

Read More

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Compare the number of positive margins following excision of the nonpalpable breast tumours for the two different surgical techniques	immediate post-operative pathology results

Secondary Outcome Measures

Name	Time	Method
Compare procedure times, complications and volume of tissue excised for both techniques	intra-operative

Trial Locations

Locations (3)

St. Joseph's Healthcare; 🇨🇦 Hamilton, Ontario, Canada

Princess Margaret Hospital; 🇨🇦 Toronto, Ontario, Canada

Juravinski Cancer Centre; 🇨🇦 Hamilton, Ontario, Canada