Publications by authors named "Siobhan Laws"

Objective: To gather a deep qualitative understanding of the perceived benefits and impacts of External-Beam RadioTherapy (EBRT) and TARGeted Intraoperative radioTherapy (TARGIT-IORT) using Intrabeam to assess how the treatments affected patient/care partner experiences during their cancer treatment and beyond.

Design And Participants: A patient-led working group was established to guide study design and to help validate findings. Patients with experience of receiving EBRT or TARGIT-IORT were purposively sampled by Hampshire Hospitals NHS Foundation Trust.

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Background: Negative pressure wound therapy (NPWT) has emerged as an adjunct to reduce wound complication rates in many surgical domains. This study investigated the prophylactic use of PICO NPWT in high-risk patients undergoing oncoplastic and reconstructive breast surgery.

Methods: This was a prospective multicenter national audit.

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Background & Objectives: Sentinel lymph node biopsy (SLNB) is an accurate and reliable method for staging the axilla in early breast cancer. The gold standard technique for localizing the sentinel lymph node (SLN) is the use of radioisotope with or without blue dye. However, this technique has its limitations.

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Purpose: Changes occur in the expression of oestrogen-regulated and proliferation-associated genes in oestrogen receptor (ER)-positive breast tumours during the menstrual cycle. We investigated if Oncotype® DX recurrence score (RS), Prosigna® (ROR) and EndoPredict® (EP/EPclin) prognostic tests, which include some of these genes, vary according to the time in the menstrual cycle when they are measured.

Methods: Pairs of test scores were derived from 30 ER-positive/human epidermal growth factor receptor-2-negative tumours sampled at two different points of the menstrual cycle.

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Background: The TARGIT-A trial reported risk-adapted targeted intraoperative radiotherapy (TARGIT-IORT) during lumpectomy for breast cancer to be as effective as whole-breast external beam radiotherapy (EBRT). Here, we present further detailed analyses.

Methods: In total, 2298 women (≥45 years, invasive ductal carcinoma ≤3.

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Objective: To determine whether risk adapted intraoperative radiotherapy, delivered as a single dose during lumpectomy, can effectively replace postoperative whole breast external beam radiotherapy for early breast cancer.

Design: Prospective, open label, randomised controlled clinical trial.

Setting: 32 centres in 10 countries in the United Kingdom, Europe, Australia, the United States, and Canada.

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Importance: Conventional adjuvant radiotherapy for breast cancer given daily for several weeks is onerous and expensive. Some patients may be obliged to choose a mastectomy instead, and some may forgo radiotherapy altogether. We proposed a clinical trial to test whether radiotherapy could be safely limited to the tumor bed.

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The major changes in hormone levels that occur through the menstrual cycle have been postulated to affect the expression of hormone-regulated and proliferation-associated genes (PAGs) in premenopausal ER+ breast cancer. Whilst previous studies have demonstrated differences in gene expression, here, we investigated if there are within patient changes in the expression of oestrogen- and progesterone-regulated genes (ERGs and PRGs) and PAGs in ER+ breast cancer during the menstrual cycle. Samples from 96 patients in two independent prospective studies of the effect of menstrual cycle on ER+ breast cancer were used.

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Objectives: Extreme oncoplastic breast conserving surgery (eOPBCS) allows breast conservation for tumours ≥ 50 mm, but long-term outcomes are unclear. We investigated early complications and the longer-term clinical and oncological outcomes following eOPBCS to assess the clinical utility and safety of this technique.

Materials And Methods: A prospectively collected database of all eOPBCS procedures (1993-2016) using LD miniflaps (LDm) and therapeutic mammoplasties (TM) was interrogated and cross-checked with hospital records to establish length of follow up (FU), clinical outcomes (complications, revisions), local recurrence (LR) and survival.

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Unlabelled: Oncoplastic breast-conserving surgery (OBCS) avoids mastectomy for larger tumors, but patient-reported outcomes are unknown.

Methods: The BREAST-Q questionnaire was distributed to 333 women following therapeutic mammaplasty or latissimus dorsi (LD) miniflap since 1991 [tumor diameter, 32.5 (5-100) mm).

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Background: Breast reconstruction (BR) is considered to be adversely affected by radiotherapy (RT), particularly when an implant is used. The aim of this study was to compare clinical and patient-reported outcomes after expander-assisted latissimus dorsi breast reconstruction depending on the timing of RT.

Methods: Patients undergoing BR over a 10-year period (follow-up mean, 56 [14-134] months) were divided into 3 groups.

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Background: Tumor-positive sentinel lymph node (SLN) biopsy results in a risk of non sentinel node metastases in micro- and macro-metastases ranging from 20 to 50%, respectively. Therefore, most patients underwent unnecessary axillary lymph node dissections. We have previously developed a mathematical model for predicting patient-specific risk of non sentinel node (NSN) metastases based on 2460 patients.

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Two large randomised controlled trials of intraoperative radiotherapy (IORT) in breast-conserving surgery (TARGIT-A and ELIOT) have been published 14 years after their launch. Neither the TARGIT-A trial nor the ELIOT trial results have changed the current clinical practice for the use of IORT. The in-breast local recurrence rate (LRR) after IORT met the pre-specified non-inferiority margins in both trials and was 3.

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Increasing breast specialization triggered a review of our surgical activity. All 10,000 elective inpatient and day case procedures between 1998 and 2008 were grouped into six categories: oncological, primary, secondary and revisional oncoplastic, and other breast and nonbreast procedures. Overall, surgical activity increased, with a rise in breast and a fall in nonbreast procedures, as a result of a changing caseload in each category (chi-squared for linear trend = 55.

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Background: Latissimus dorsi (LD) miniflap volume replacement is used for immediate reconstruction after partial mastectomy. This prospectively collected series was analyzed to evaluate the accuracy of intraoperative frozen sections.

Methods: After partial mastectomy, "bed biopsies" were submitted for intraoperative frozen-section analysis.

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