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wide resection - Top 30 Publications

Magnetic resonance perfusion for differentiating low-grade from high-grade gliomas at first presentation.

Gliomas are the most common primary brain tumour. They are graded using the WHO classification system, with Grade II-IV astrocytomas, oligodendrogliomas and oligoastrocytomas. Low-grade gliomas (LGGs) are WHO Grade II infiltrative brain tumours that typically appear solid and non-enhancing on magnetic resonance imaging (MRI) scans. People with LGG often have little or no neurologic deficit, so may opt for a watch-and-wait-approach over surgical resection, radiotherapy or both, as surgery can result in early neurologic disability. Occasionally, high-grade gliomas (HGGs, WHO Grade III and IV) may have the same MRI appearance as LGGs. Taking a watch-and-wait approach could be detrimental for the patient if the tumour progresses quickly. Advanced imaging techniques are increasingly used in clinical practice to predict the grade of the tumour and to aid clinical decision of when to intervene surgically. One such advanced imaging technique is magnetic resonance (MR) perfusion, which detects abnormal haemodynamic changes related to increased angiogenesis and vascular permeability, or "leakiness" that occur with aggressive tumour histology. These are reflected by changes in cerebral blood volume (CBV) expressed as rCBV (ratio of tumoural CBV to normal appearing white matter CBV) and permeability, measured by Ktrans.

Intra-articular synovial sarcoma of the knee rising from a lateral meniscus - a case report.

Synovial sarcoma (SS) is a rare mesenchymal tumor, accounting less than 10% of soft tissue sarcomas. We report a case of intraarticular SS mimicking nodular synovitis and lateral meniscus rupture. Due to clinical and radiological presentation, arthroscopic synovectomy was performed, and histology confirmed nodular synovitis. After four years the lesion recurred and new arthroscopic biopsy was performed, revealing a monophasic SS with SYT/SSX1 translocation. Repeated histology of the first specimen confirmed appearance of a nodular synovitis microscopically, with no morphological criteria for a sarcoma, but molecular analysis showed positive SYT/SSX1 translocation. Wide extraarticular knee resection and reconstruction with a tumor megaendoprosthesis-allograft composite was performed with a negative tumor margins. This case report showed that in a case of benign histological appearance, underlying sarcoma is possible and could be identified in early stages only with an advanced pathology methods.

Remediation of Radiation-Induced Cognitive Dysfunction through Oral Administration of the Neuroprotective Compound NSI-189.

Clinical management of primary and secondary central nervous system (CNS) malignancies frequently includes radiotherapy to forestall tumor growth and recurrence after surgical resection. While cranial radiotherapy remains beneficial, adult and pediatric brain tumor survivors suffer from a wide range of debilitating and progressive cognitive deficits. Although this has been recognized as a significant problem for decades, there remains no clinical recourse for the unintended neurocognitive sequelae associated with these types of cancer treatments. In previous work, multiple mechanisms have been identified that contribute to radiation-induced cognitive dysfunction, including the inhibition of neurogenesis caused by the depletion of radiosensitive populations of stem and progenitor cells in the hippocampus. To explore the potential neuroprotective properties of a pro-neurogenic compound NSI-189, Long-Evans rats were subjected to a clinically relevant fractionated irradiation protocol followed by four weeks of NSI-189 administered daily by oral gavage. Animals were then subjected to five different behavioral tasks followed by an analysis of neurogenesis, hippocampal volume and neuroinflammation. Irradiated cohorts manifested significant behavioral decrements on all four spontaneous exploration tasks. Importantly, NSI-189 treatment resulted in significantly improved performance in four of these tasks: novel place recognition, novel object recognition, object in place and temporal order. In addition, there was a trend of improved performance in the contextual phase of the fear conditioning task. Importantly, enhanced cognition in the NSI-189-treated cohort was found to persist one month after the cessation of drug treatment. These neurocognitive benefits of NSI-189 coincided with a significant increase in neurogenesis and a significant decrease in the numbers of activated microglia compared to the irradiated cohort that was given vehicle alone. The foregoing changes were not accompanied by major changes in hippocampal volume. These data demonstrate that oral administration of a pro-neurogenic compound exhibiting anti-inflammatory indications could impart long-term neurocognitive benefits in the irradiated brain.

Effect of Lipodox in combination with bevacizumab in a patient with a metastatic malignant phyllodes breast tumor: A case report.

A 76-year-old female patient with a malignant phyllodes tumor underwent modified radical mastectomy and wide excision. Multiple nodules were observed in the operated wound area. Positron emission tomography-computed tomography (PET-CT) revealed recurrent disease in the left breast, the adjacent left third rib, the left internal mammary region and the left ilium. A novel formulation of bevacizumab (5 mg/m2, first day) in combination with liposomal doxorubicin (Lipodox, 30 mg/m2, second day) was administered for 3 cycles every 2 weeks, and subsequently wide excision was performed. Lipodox (40 mg/m2) was administered for 3 cycles every 3 weeks, starting 4 weeks after the surgery. Follow-up whole body PET-CT scanning, 3 and 6 months later, indicated no sign of residual hypermetabolic malignancy. Malignant phyllodes tumors do not usually respond to chemotherapy or radiotherapy. In the present case report, a novel formulation of bevacizumab in combination with Lipodox was administered as neoadjuvant chemotherapy in a patient with a malignant phyllodes tumor and preoperative tumor shrinkage was achieved, resulting in clear resection margins.

HumanMethylation450K Array-Identified Biomarkers Predict Tumour Recurrence/Progression at Initial Diagnosis of High-risk Non-muscle Invasive Bladder Cancer.

High-risk non-muscle invasive bladder cancer (HR-NMIBC) is a clinically unpredictable disease. Despite clinical risk estimation tools, many patients are undertreated with intra-vesical therapies alone, whereas others may be over-treated with early radical surgery. Molecular biomarkers, particularly DNA methylation, have been reported as predictive of tumour/patient outcomes in numerous solid organ and haematologic malignancies; however, there are few reports in HR-NMIBC and none using genome-wide array assessment. We therefore sought to identify novel DNA methylation markers of HR-NMIBC clinical outcomes that might predict tumour behaviour at initial diagnosis and help guide patient management.

Correlation between Resection Margin and Disease Recurrence with a Restricted Cubic Spline Model in Patients with Resected Hepatocellular Carcinoma.

The relationship between resection margin (RM) and recurrence of resected hepatocellular carcinoma (HCC) is unclear.

Modalities for image- and molecular-guided cancer surgery.

Surgery is the cornerstone of treatment for many solid tumours. A wide variety of imaging modalities are available before surgery for staging, although surgeons still rely primarily on visual and haptic cues in the operating environment. Image and molecular guidance might improve the adequacy of resection through enhanced tumour definition and detection of aberrant deposits. Intraoperative modalities available for image- and molecular-guided cancer surgery are reviewed here.

Laparoscopic-Assisted Modified Intersphincter Resection for Ultralow Rectal Cancer.

Intersphincter resection (ISR) is considered to be a superior technique offering sphincter preservation in patients with ultralow rectal cancer.1 Because high-definition laparoscopy offers wider and clearer vision into the narrow pelvic cavity and intersphincteric space, ISR has been further refined.2 However, functional outcome after ISR has not been optimal. More than half of patients receiving ISR suffer partial or even complete anal incontinence.3 We therefore propose a laparoscopic-assisted modified ISR, with the aim of improving sphincter function following ISR.

The timing of liver resection in patients with colorectal cancer and synchronous liver metastases: a population-based study of current practice and survival.

There is uncertainty regarding the optimal sequence of surgery for patients with colorectal cancer (CRC) and synchronous liver metastases. This study was designed to describe temporal trends and inter-hospital variation in surgical strategy, and to compare long-term survival in a propensity score-matched analysis.

Application of Fluorescence-Guided Surgery to Subsurface Cancers Requiring Wide Local Excision: Literature Review and Novel Developments Toward Indirect Visualization.

The excision of tumors by wide local excision is challenging because the mass must be removed entirely without ever viewing it directly. Positive margin rates in sarcoma resection remain in the range of 20% to 35% and are associated with increased recurrence and decreased survival. Fluorescence-guided surgery (FGS) may improve surgical accuracy and has been utilized in other surgical specialties. ABY-029, an anti-epidermal growth factor receptor Affibody molecule covalently bound to the near-infrared fluorophore IRDye 800CW, is an excellent candidate for future FGS applications in sarcoma resection; however, conventional methods with direct surface tumor visualization are not immediately applicable. A novel technique involving imaging through a margin of normal tissue is needed. We review the past and present applications of FGS and present a novel concept of indirect FGS for visualizing tumor through a margin of normal tissue and aiding in excising the entire lesion as a single, complete mass with tumor-free margins.

Oral Verrucous Carcinoma: Ten Year Experience from a Tertiary Care Hospital in India.

Verrucous carcinoma of the oral cavity (OVC) is an uncommon variant of oral squamous cell carcinoma (OSCC). The clinical presentation and surgical outcomes of OVC are unique; however, the management protocols for OVC are largely extrapolated from OSCC.

Novel Molecular and Phenotypic Insights into Congenital Lung Malformations.

Disruption of normal pulmonary development is a leading cause of morbidity and mortality in infants. Congenital lung malformations are a unique model to study the molecular pathogenesis of isolated structural birth defects as they are often surgically resected.

Brachytherapy in soft tissue tumours: an interdisciplinary challenge!

Interdisciplinary work including surgery and additive radiotherapy is often needed for the therapy of tumours. Beneath this, brachytherapy is an important part of the radiotherapy. It was first used over 100 years ago and is in regular use after the development of afterload technology in the early 1970s. Today it is often used in different tumour therapies, for example in soft tissue sarcoma or breast tumours, in order to decrease the risk of local recurrence. Concerning its benefits, higher doses could be used because of the localized effect with equivalent local control rate and less toxicity of treatment. Moreover, brachytherapy can also shorten the treatment time from 5-7 weeks to some days and is better reconcilable due to its localized effects, thus reducing side effects, as radiation-induced reactions, teleangiectasia and brosis. Precondition for application of brachytherapy is the need of a good soft tissue coverage and wound healing. Therefore, good interdisciplinary cooperation between plastic surgery and radiotherapy is important. After wide surgical resection reconstruction with different kind of flaps are often required, for achieving early wound healing and fast start of radiotherapy.

An elderly woman with a mediastinal granulosa cell tumour: a rare presentation.

Mediastinal lesions occur in a wide variety of clinical conditions. Metastatic granulosa cell tumour (GCT) in the mediastinum is a rare occurrence. We report a case of a woman who had a metastatic (GCT) in her mediastinum 40 years after treatment of the initial neoplasm. Surgical resection of the mediastinal mass revealed a low-grade epithelioid neoplasm with coffee bean-shaped nuclei and immunohistochemical stains that were consistent with metastatic GCT.

Strong coupling between slow oscillations and wide fast ripples in children with epileptic spasms: Investigation of modulation index and occurrence rate.

Epileptic spasms (ES) often become drug-resistant. To reveal the electrophysiological difference between children with ES (ES+) and without ES (ES-), we compared the occurrence rate (OR) of high-frequency oscillations (HFOs) and the modulation index (MI) of coupling between slow and fast oscillations. In ES+, we hypothesized that (1) pathological HFOs are more widely distributed and (2) slow oscillations show stronger coupling with pathological HFOs than in ES-.

Robotic assisted excision of type I choledochal cyst with Roux-en-y hepaticojejunostomy reconstruction.

Choledochal cyst is a relatively rare congenital disease. The current standard treatment of choice for choledochal cyst is complete excision with Roux-en-y hepaticojejunostomy due to possible associated complications if left untreated, such as cholangitis, pancreatitis, cirrhosis, portal hypertension, and biliary malignancy. Traditionally, the resection for choledochal cyst is carried out with open surgery because of complex dissection and bilioenteric reconstruction. Recently, minimal invasive approach has gain wide interest, especially with the use of robotic surgical systems which can facilitate complex minimal access procedures. Herein, we present a case of robotic assisted excision of type I choledochal cyst in a young lady with complete intracorporeal reconstruction of Roux-en-y hepaticojejunostomy. Robotic-assisted surgery can be safely applied to the resection of type I choledochal cyst and also provide a complex suturing technique for reconstruction with Roux-en-y hepaticojejunostomy. Although the total operating time for robot-assisted resection of choledochal cysts and hepaticojejunostomy is relatively long for this initial experience, the young lady and family are pleased with the cosmetic results.

Primary breast leiomyosarcoma and synchronous homolateral lung cancer: a case report.

Radiological and histological features of breast leiomyosarcoma can mimic a wide variety of other breast lesions, such as mesenchymal tumors, breast lymphomas, poorly differentiated carcinomas and metaplastic breast carcinomas. The authors present the case of a 62-year-old woman with a primary breast leiomyosarcoma with synchronous ipsilateral lung adenocarcinoma. The latter was an incidental finding during pre-surgical staging examinations. Clinicopathological, immunophenotypic and imaging features cancer are described. A brief review of the literature on imaging findings and management of breast leiomyosarcoma is presented. The authors discuss the differential diagnoses in breast imaging and of the extra-mammary incidental findings. Surgical resection remains the cornerstone of treatment, while radiation therapy and chemotherapy remain to be defined on a single-patient basis.

Contributing factors to the outcome of primary malignant chest wall tumors.

Primary malignant chest-wall tumors (PMCWTs) are a heterogeneous group of tumors. They require a special experience in designing resection and reconstruction. They account for less than 1% of all primary malignant tumors. This study is designed to clarify different factors contributing to the outcome of patients with PMCWTs in our institution.

Multidisciplinary approach to chest wall resection and reconstruction for chest wall tumors, a single center experience.

Chest wall resection and reconstruction (CWRR) is quite challenging in surgery, due to evolution in techniques. Neoplasms of the chest wall, primary or secondary, have been considered inoperable for a long time. Thanks to evolving surgical techniques, reconstruction after extensive chest wall resection is possible with good functional and aesthetic results.

Central round block repair of large breast resection defects: oncologic and aesthetic outcomes.

The central round block repair is a volume displacement technique to reconstruct large wide local excision (WLE) defects in breasts with moderate ptosis or hypertrophy. There are limited published data on the outcomes of this technique.

Wide-spread ignorance on the treatment of subcutaneous malignant tumors; a questionnaire-based study.

Subcutaneous malignant tumors are often treated by non-specialized clinicians in musculoskeletal oncology. While the resection of subcutaneous tumors appears technically feasible, unplanned resection of malignant tumors can result in a devastating clinical outcome. The aim of this study was to evaluate the potential estrangement in the awareness of and the treatment strategy for the patients with subcutaneous soft tissue tumors between musculoskeletal oncologists and non-specialized clinicians.

Patient survival following joint replacement due to metastatic bone disease - comparison of overall patient and prostheses survival between cohorts treated in two different time-periods.

Improvements in medical treatment for cancer have increased survival of cancer patients. We hypothesize that improvement in cancer treatment is reflected in increased survival after surgical intervention for metastatic bone disease (MBD) and that subsequent revision surgery does not pose a risk for survival.

Synchronous Locally Advanced Rectal Cancer with Clinical Complete Remission and Important Downstaging after Neoadjuvant Radiochemotherapy - Personalised Therapeutic Approach.

Introduction: The current practice for patients with good response, important downstaging or complete remission after preoperative chemoradiation, is to perform surgery on the basis of initial pretherapeutical staging. In literature, varying approaches, like transanal endoscopic microsurgery and even "wait and see", are described for patients with good response after chemoradiation. However, considering the present level of available evidence, the wide-spread adoption of a "watch and wait" policy in those achieving a complete clinical remission cannot be justified.

A Collision Tumor Involving a Primary Leiomyosarcoma of the Lower Extremity and a Metastatic Medullary Thyroid Carcinoma: A Case Report.

A 49-year-old man presented with a rapidly growing thigh mass. Histologic analyses demonstrated separate regions that were consistent with a collision tumor composed of a primary leiomyosarcoma and a metastatic medullary thyroid carcinoma. After responding to chemotherapy, the patient underwent resection of the tumor and a total thyroidectomy; he was disease-free 9 years after the diagnosis.

A Comparison of Dexmedetomidine and Clonidine in Attenuating the Hemodynamic Responses at Various Surgical Stages in Patients Undergoing Elective Transnasal Transsphenoidal Resection of Pituitary Tumors.

Transsphenoidal approach to pituitary tumors is a commonly performed procedure with the advantage of a rapid midline access to the sella with minimal complications. It may be associated with wide fluctuations in hemodynamic parameters due to intense noxious stimulus at various stages of the surgery. As duration of the surgery is short and the patients have nasal packs, it is prudent to use an anesthestic technique with an early predictable recovery.

Ankle ligament reconstruction after wide resection of the osteosarcoma of the distal fibula: a case report.

Restoration of the lateral ankle after distal fibulectomy is a difficult reconstructive procedure. Many surgical techniques have been proposed. This report shows another fibular reconstructive option with promising outcome.

The Efficacy of Wide Resection for Musculoskeletal Metastatic Lesions of Renal Cell Carcinoma.

This study evaluated the outcome of wide resection for metastatic renal cell carcinoma (RCC) to the bone or soft tissue.

Robot-assisted anterior pelvic exenteration in vulvovaginal malignant melanoma.

Melanomas of the vulva and vagina are rare, and surgery is the gold standard of treatment [1, 2]. Since recent studies have reported pelvic exenteration by using robotic surgical system [3, 4], we showed the surgical procedures of robot-assisted anterior pelvic exenteration (rAPE) with ileal conduit urinary diversion for vulvovaginal malignant melanoma.

Development and evaluation of a connective tissue phantom model for subsurface visualization of cancers requiring wide local excision.

Wide local excision (WLE) of tumors with negative margins remains a challenge because surgeons cannot directly visualize the mass. Fluorescence-guided surgery (FGS) may improve surgical accuracy; however, conventional methods with direct surface tumor visualization are not immediately applicable, and properties of tissues surrounding the cancer must be considered. We developed a phantom model for sarcoma resection with the near-infrared fluorophore IRDye 800CW and used it to iteratively define the properties of connective tissues that typically surround sarcoma tumors. We then tested the ability of a blinded surgeon to resect fluorescent tumor-simulating inclusions with ∼1-cm margins using predetermined target fluorescence intensities and a Solaris open-air fluorescence imaging system. In connective tissue-simulating phantoms, fluorescence intensity decreased with increasing blood concentration and increased with increasing intralipid concentrations. Fluorescent inclusions could be resolved at ≥1-cm depth in all inclusion concentrations and sizes tested. When inclusion depth was held constant, fluorescence intensity decreased with decreasing volume. Using targeted fluorescence intensities, a blinded surgeon was able to successfully excise inclusions with ∼1-cm margins from fat- and muscle-simulating phantoms with inclusion-to-background contrast ratios as low as 2∶1. Indirect, subsurface FGS is a promising tool for surgical resection of cancers requiring WLE.

Surgical treatment of Duane retraction syndrome.

Surgical treatment in Duane retraction syndrome (DRS) can be very challenging even for the strabismus specialists because of a wide spectrum of diversity in clinical manifestations. The purpose of this article is to review these different surgical treatments.