A DGH’s experience using Magseed as a localisation tool for impalpable breast lesions
Association of Breast Surgery ePoster Library. Crane J. 05/13/19; 257194; P152
Jasmine Crane
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P152
Topic: Surgical techniques
Introduction: Breast cancer is the third most common cancer worldwide. Current techniques for localising breast lesions include Hookwire and radio-occult lesion localisation (ROLL).Magseed is a new innovative localisation device available in the UK. It is a 5mm steel marker radiologically placed up to 30 days prior to excision. The Sentimag probe locates the marker by emanating exponential magnetic signals to indicate proximity to tumour. Aim:To evaluate the efficacy of the Magseed technique in comparison to current Hookwire techniques in a DGH for removal of non-palpable breast lesions.Method:Magseed data was collated from February to November 2018. Re-excision rates were compared with both the national average and our DGH's own statistics using the standard Hookwire localisation technique. Results: Measured Outcomes:Number of Magseed Patients47 patients, 6 re-excisions12.8%Age33-8064BMI21-43.829Operative Time (minutes)9-4222Grade13 G1, 22 G2, 8 G3, 4 unknownG2Size (mm)5-22.512.6Lymph node involvement7/4714.8%Complications:2 wound infections, 1 haematoma, 1 Magseed deployed incorrectly8.5%TechniqueTotal (N=)Number Re-excisedAbsolute RiskRelative Risk ReductionNumber Needed to TreatP ValueHookwire Localisation173340.1970.35014.5P Value: 0.282Not significant (p< 0.05)Magseed Localisation4760.128Conclusion:Magseed effectively replaced Hookwire localisation in our DGH. It reduced excision time from 45 minutes on average using Hookwire, to 22 minutes using Magseed. Re-excision rates dropped from 19.7% (hookwire) to 12.8%, with a relative risk reduction of 35%, comparing favourably to the national average re-excision rate of 20%.Magseed has improved patient experience, increased daycase bed usage and reduced re-excision rates. A cost analysis is currently ongoing.
Topic: Surgical techniques
Introduction: Breast cancer is the third most common cancer worldwide. Current techniques for localising breast lesions include Hookwire and radio-occult lesion localisation (ROLL).Magseed is a new innovative localisation device available in the UK. It is a 5mm steel marker radiologically placed up to 30 days prior to excision. The Sentimag probe locates the marker by emanating exponential magnetic signals to indicate proximity to tumour. Aim:To evaluate the efficacy of the Magseed technique in comparison to current Hookwire techniques in a DGH for removal of non-palpable breast lesions.Method:Magseed data was collated from February to November 2018. Re-excision rates were compared with both the national average and our DGH's own statistics using the standard Hookwire localisation technique. Results: Measured Outcomes:Number of Magseed Patients47 patients, 6 re-excisions12.8%Age33-8064BMI21-43.829Operative Time (minutes)9-4222Grade13 G1, 22 G2, 8 G3, 4 unknownG2Size (mm)5-22.512.6Lymph node involvement7/4714.8%Complications:2 wound infections, 1 haematoma, 1 Magseed deployed incorrectly8.5%TechniqueTotal (N=)Number Re-excisedAbsolute RiskRelative Risk ReductionNumber Needed to TreatP ValueHookwire Localisation173340.1970.35014.5P Value: 0.282Not significant (p< 0.05)Magseed Localisation4760.128Conclusion:Magseed effectively replaced Hookwire localisation in our DGH. It reduced excision time from 45 minutes on average using Hookwire, to 22 minutes using Magseed. Re-excision rates dropped from 19.7% (hookwire) to 12.8%, with a relative risk reduction of 35%, comparing favourably to the national average re-excision rate of 20%.Magseed has improved patient experience, increased daycase bed usage and reduced re-excision rates. A cost analysis is currently ongoing.
P152
Topic: Surgical techniques
Introduction: Breast cancer is the third most common cancer worldwide. Current techniques for localising breast lesions include Hookwire and radio-occult lesion localisation (ROLL).Magseed is a new innovative localisation device available in the UK. It is a 5mm steel marker radiologically placed up to 30 days prior to excision. The Sentimag probe locates the marker by emanating exponential magnetic signals to indicate proximity to tumour. Aim:To evaluate the efficacy of the Magseed technique in comparison to current Hookwire techniques in a DGH for removal of non-palpable breast lesions.Method:Magseed data was collated from February to November 2018. Re-excision rates were compared with both the national average and our DGH's own statistics using the standard Hookwire localisation technique. Results: Measured Outcomes:Number of Magseed Patients47 patients, 6 re-excisions12.8%Age33-8064BMI21-43.829Operative Time (minutes)9-4222Grade13 G1, 22 G2, 8 G3, 4 unknownG2Size (mm)5-22.512.6Lymph node involvement7/4714.8%Complications:2 wound infections, 1 haematoma, 1 Magseed deployed incorrectly8.5%TechniqueTotal (N=)Number Re-excisedAbsolute RiskRelative Risk ReductionNumber Needed to TreatP ValueHookwire Localisation173340.1970.35014.5P Value: 0.282Not significant (p< 0.05)Magseed Localisation4760.128Conclusion:Magseed effectively replaced Hookwire localisation in our DGH. It reduced excision time from 45 minutes on average using Hookwire, to 22 minutes using Magseed. Re-excision rates dropped from 19.7% (hookwire) to 12.8%, with a relative risk reduction of 35%, comparing favourably to the national average re-excision rate of 20%.Magseed has improved patient experience, increased daycase bed usage and reduced re-excision rates. A cost analysis is currently ongoing.
Topic: Surgical techniques
Introduction: Breast cancer is the third most common cancer worldwide. Current techniques for localising breast lesions include Hookwire and radio-occult lesion localisation (ROLL).Magseed is a new innovative localisation device available in the UK. It is a 5mm steel marker radiologically placed up to 30 days prior to excision. The Sentimag probe locates the marker by emanating exponential magnetic signals to indicate proximity to tumour. Aim:To evaluate the efficacy of the Magseed technique in comparison to current Hookwire techniques in a DGH for removal of non-palpable breast lesions.Method:Magseed data was collated from February to November 2018. Re-excision rates were compared with both the national average and our DGH's own statistics using the standard Hookwire localisation technique. Results: Measured Outcomes:Number of Magseed Patients47 patients, 6 re-excisions12.8%Age33-8064BMI21-43.829Operative Time (minutes)9-4222Grade13 G1, 22 G2, 8 G3, 4 unknownG2Size (mm)5-22.512.6Lymph node involvement7/4714.8%Complications:2 wound infections, 1 haematoma, 1 Magseed deployed incorrectly8.5%TechniqueTotal (N=)Number Re-excisedAbsolute RiskRelative Risk ReductionNumber Needed to TreatP ValueHookwire Localisation173340.1970.35014.5P Value: 0.282Not significant (p< 0.05)Magseed Localisation4760.128Conclusion:Magseed effectively replaced Hookwire localisation in our DGH. It reduced excision time from 45 minutes on average using Hookwire, to 22 minutes using Magseed. Re-excision rates dropped from 19.7% (hookwire) to 12.8%, with a relative risk reduction of 35%, comparing favourably to the national average re-excision rate of 20%.Magseed has improved patient experience, increased daycase bed usage and reduced re-excision rates. A cost analysis is currently ongoing.
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