Clinical trial · Observational
Retrospective Evaluation of Ultrasound-assisted Tumor Surgery in Breast-conserving Therapy
Retrospective Evaluation of the R1/ Post-resection Rate With Intraoperative Measurement of the Target Volume Using Ultrasound by a Surgeon (Ultrasound-assisted Tumor Surgery) as Part of Breast-conserving Therapy in Breast Cancer
NCT07519668CI-TRIAL-00107741MAC004completedClinicalTrials.gov clinicaltrialsProvenance
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
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.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Breast Cancer | Malignant Breast Neoplasm | CURATED_EXACT | 0.92 |
Interventions
Interventions (0)
Data not yet available
No intervention recorded.
Design
Arms and outcomes
Arms (1)
- label
- Uni- or Bilateral Ductal Carcinoma in Situ (DCIS) or Invasive Breast Cancer
- description
- 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.
Primary outcomes (1)
- measure
- R1 resection rates
- timeFrame
- 3 years
- description
- In this retrospective study, R1 resections were defined as cases requiring a follow-up surgery due to incomplete tumor removal.
Secondary outcomes (3)
- measure
- Weight of main specimen
- timeFrame
- Day of excision
- description
- The weight of the main specimen was recorded immediately after excision at the time of surgical removal.
Eligibility
Eligibility (as posted)
- Sex
- Female
- Minimum age
- 18 Years
- Maximum age
- 80 Years
Show eligibility criteria text
Inclusion Criteria: * Age at least 18 years and no more than 80 years (inclusive) * Preoperatively histologically confirmed breast cancer, detectable by ultrasound * Unifocal to multifocal findings * Palpable and/or non-palpable findings * Indication for breast-conserving therapy (BCT) Exclusion Criteria: * Sonographically ambiguous findings * Multicentricity * Exclusion criteria for BCT * Status after neoadjuvant chemotherapy
References
Publications (0)
Data not yet available
No reference posted for this study.