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The aim of this study is to evaluate whether standardizing intraoperative ultrasound (IOUS) with the "Tübingen Ultrasound Ruler" reduces R1 resection rates in breast-conserving surgery.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Uni- or Bilateral Ductal Carcinoma in Situ (DCIS) or Invasive Breast Cancer | This retrospective, single-center study included 313 surgical procedures performed on 304 patients between January 2020 and December 2023. The patients underwent breast-conserving surgery (BCS) for unilateral or bilateral ductal carcinoma in situ (DCIS) or invasive breast cancer. All surgeries were performed by a single surgeon. |
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| Measure | Description | Time Frame |
|---|---|---|
| R1 resection rates | In this retrospective study, R1 resections were defined as cases requiring a follow-up surgery due to incomplete tumor removal. | 3 years |
| Measure | Description | Time Frame |
|---|---|---|
| Weight of main specimen | The weight of the main specimen was recorded immediately after excision at the time of surgical removal. | Day of excision |
| Duration of surgery | During surgery |
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Inclusion Criteria:
Exclusion Criteria:
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All patients who underwent breast-conserving mammosurgery using the standardized ultrasound ruler technique from 2020 to 2023, regardless of tumor biology, microcalcifications, focality, or primary chemotherapy.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Department for Women's Health | Tübingen | Baden-Wurttemberg | 72076 | Germany |
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| ID | Term |
|---|---|
| D001943 | Breast Neoplasms |
| ID | Term |
|---|---|
| D009371 | Neoplasms by Site |
| D009369 | Neoplasms |
| D001941 | Breast Diseases |
| D012871 | Skin Diseases |
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Tumors were excised with a sonographically assessed safety margin of >10 mm in all directions. After specimen imaging, additional margin specimens (shavings) were taken when indicated. A total of 282 specimens were analyzed.
| Number of Shavings | Number of shavings was recorded intraoperatively, with each shaving representing additional tissue removed to achieve clear margins. | During surgery |
| D017437 |
| Skin and Connective Tissue Diseases |