Publications by authors named "Mohammed R Keshtgar"

Purpose: Access to nuclear medicine department for sentinel node imaging remains an issue in number of hospitals in the UK and many parts of the world. Sentinella is a portable imaging camera used intra-operatively to produce real time visual localisation of sentinel lymph nodes.

Methods: Sentinella was tested in a controlled laboratory environment at our centre and we report our experience on the first use of this technology from UK.

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The high incidence and low mortality of breast cancer surgery has led to an increasing emphasis on the cosmetic outcome of surgical treatment. Advances in aesthetic evaluation, as well as surgical planning and outcome prediction, have been investigated by using geometrically precise 3D modelling of the breast surface prior to surgery and after the procedure. However, existing solutions are based on expensive site specific setups and remain weakly validated.

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Intra-operative radiotherapy (IORT) as a treatment for breast cancer is a relatively new technique that is designed to be a replacement for whole breast external beam radiotherapy (EBRT) in selected women suitable for breast-conserving therapy. This article reviews twelve reasons for the use of the technique, with a particular emphasis on targeted intra-operative radiotherapy (TARGIT) which uses X-rays generated from a portable device within the operating theatre immediately after the breast tumour (and surrounding margin of healthy tissue) has been removed. The delivery of a single fraction of radiotherapy directly to the tumour bed at the time of surgery, with the capability of adding EBRT at a later date if required (risk-adaptive technique) is discussed in light of recent results from a large multinational randomised controlled trial comparing TARGIT with EBRT.

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One step nucleic acid (OSNA) is a molecular diagnostic assay for intra-operative detection of sentinel node metastases. This study compared OSNA with standard histopathology in 283 nodes from 170 patients to evaluate sensitivity, specificity and concordance of the two methods. Additional analysis was done to investigate how cytokeratin 19 mRNA copy number affects prediction of non-sentinel node positivity.

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The international randomised targeted intraoperative radiotherapy (TARGIT) trial has demonstrated evidence of non-inferiority between the novel technique of TARGIT (intra-operative radiotherapy with Intrabeam(®)) and conventional external beam radiotherapy (EBRT) in women with early breast cancer in terms of the primary outcome measure of risk of local relapse within the treated breast. Cosmesis is an increasingly important outcome of breast conserving treatment with both surgery and radiotherapy contributing to this. It was unknown if the single high dose of TARGIT may lead to damaging fibrosis and thus impair cosmesis further, so we objectively evaluated the aesthetic outcome of patients within the TARGIT randomised controlled trial.

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We present the case of an 83 year old woman with a cardiac pacemaker located close in distance to a subsequently diagnosed invasive ductal carcinoma of the left breast. Short range intraoperative radiotherapy was given following wide local excision and sentinel node biopsy. The challenges of using ionising radiation with pacemakers is also discussed.

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Introduction: Currently, there is a lack of data on the role of combined positron emission tomography-computed tomography (PET-CT) in the staging of early invasive primary breast cancer. We therefore evaluated the role of (18)F-fluorodeoxyglucose ((18)F-FDG)-PET-CT in this patient population.

Methods: We prospectively recruited 70 consecutive patients (69 women, one man; mean age, 61.

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Background: Religious/spiritual resources may serve multiple functions in adjustment to cancer. However, there is very little evidence of the importance of religious/spiritual variables outside the USA. This paper reports the cross-sectional data of a longitudinal study examining the beneficial and harmful effects of religious/spiritual coping resources on adjustment in the first year after a breast cancer diagnosis.

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Purpose: In vivo dosimetry provides an independent check of delivered dose and gives confidence in the introduction or consistency of radiotherapy techniques. Single-fraction intraoperative radiotherapy of the breast can be performed with the Intrabeam compact, mobile 50 kV x-ray source (Carl Zeiss Surgical, Oberkochen, Germany). Thermoluminescent dosimeters (TLDs) can be used to estimate skin doses during these treatments.

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The surgical treatment of early breast cancer has evolved from the removal of the entire breast and surrounding tissues (mastectomy) to the removal of the tumour together with a margin of healthy tissue (lumpectomy). Adjuvant radiotherapy, however, is still mainly given to the whole breast. Furthermore, external beam radiotherapy is often given several months after initial surgery and requires the patient to attend the radiotherapy centre daily for several weeks.

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The diagnosis of cancer can motivate survivors to alter their lifestyle habits. Healthcare providers need to be aware of what changes patients are likely to make in order to derive more pertinent recommendations; however, few studies have reported pre- and post-diagnostic lifestyle behaviours. Semi-quantitative food frequency questionnaires (FFQs) completed approximately 1 year after diagnosis were used to evaluate dietary intake and supplement use before and after diagnosis in a cohort of 1,560 breast cancer patients participating in the UK, prospective DietCompLyf study.

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A novel method for rapidly detecting metastatic breast cancer within excised sentinel lymph node(s) of the axilla is presented. Elastic scattering spectroscopy (ESS) is a point-contact technique that collects broadband optical spectra sensitive to absorption and scattering within the tissue. A statistical discrimination algorithm was generated from a training set of nearly 3000 clinical spectra and used to test clinical spectra collected from an independent set of nodes.

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Purpose: Tumour angiogenesis is an independent and strong prognostic factor in early breast carcinoma. We performed this study to investigate the ability of (18)F-FDG to detect angiogenesis in early breast carcinoma using PET/CT.

Methods: Twenty consecutive patients with early (T1-T2) breast carcinoma were recruited prospectively for 18F-FDG PET/CT.

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Purpose: External beam radiation therapy (EBRT) following wide local excision of the primary tumor is the standard treatment in early breast cancer. In some circumstances this procedure is not possible or is contraindicated or difficult. The purpose of this study was to determine the safety and efficacy of targeted intraoperative radiotherapy (TARGIT) when EBRT is not feasible.

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Oestrogen is an important determinant of breast cancer risk. Oestrogen-mimicking plant compounds called phytoestrogens can bind to oestrogen receptors and exert weak oestrogenic effects. Despite this activity, epidemiological studies suggest that the incidence of breast cancer is lower in countries where the intake of phytoestrogens is high, implying that these compounds may reduce breast cancer risk, and possibly have an impact on survival.

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Introduction: Axillary lymph node status for lymphatic staging in breast cancer is the best prognostic indicator and guides systemic treatment. Sentinel lymph node (SLN) biopsy is a novel, minimally invasive technique for lymphatic staging proven to improve quality of life. The accurate detection of the SLN is paramount for the success of the procedure.

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Unlabelled: Intraoperative detection of sentinel node metastases in breast cancer enables immediate axillary lymph node dissection. This approach, however, introduces uncertainty for patients as to the extent of surgery. Waking to find a surgical drain implies more extensive surgery and worse prognosis disease.

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Optimal sentinel node identification requires using the combination technique with blue dye and radiocolloid. Allergic reactions to the common blue dyes in use are well recognised. In this report, we present a patient with breast carcinoma who developed a type I hypersensitivity reaction to intradermal injection of technetium-99m labelled nanocolloidal albumin.

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The surgical management of breast cancer has become less invasive in recent years. Accurate lymphatic staging remains crucial for determining adjuvant treatment and prognosis. Sentinel node biopsy enables highly accurate lymphatic staging with minimal morbidity.

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Breast cancer is presenting earlier, and treatment is becoming less invasive. We review two recent changes in the approach to management. Sentinel lymph node biopsy is a minimally invasive technique to identify the first draining lymph node in direct communication with the primary tumor; it enables "selective lymphadenectomy.

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The present paper systematically reviews studies examining the potential beneficial or harmful effects of religious/spiritual coping with cancer. Using religion and spirituality as resources in coping may be specifically prevalent in patients with cancer considering the potentially life-threatening nature of the illness. Religious/spiritual coping may also serve multiple functions in long-term adjustment to cancer such as maintaining self-esteem, providing a sense of meaning and purpose, giving emotional comfort and providing a sense of hope.

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Results are presented of a study to monitor the changes in the optical properties of breast tissue over a 12-month period after interstitial laser photocoagulation treatment of a fibroadenoma. The study involved generating cross-sectional images of the breast with a multichannel time-resolved imaging system and a nonlinear image reconstruction algorithm. Images of the internal absorbing and scattering properties revealed the expected initial inflammatory response, followed by the development of low-scattering cysts consistent with corresponding ultrasound examinations.

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