Publications by authors named "Shabtai M"

Background: Male breast cancer (MBC) is a rare disease that is poorly understood. Treatment protocols are widely extrapolated from breast cancer in women.

Objectives: To review the experience with MBC of a single center in Israel over a period of 22 years.

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Aims: The purpose of this study was to portray and analyze the inter-relationship between the use of HRT, mammographic breast density and the finding of any mammographic abnormality that prompted further investigation such as core needle biopsy or additional imaging testing, while controlling for obstetric and relevant demographic data.

Background: Mammographic breast density has been associated with higher risk of breast cancer and decrease in its sensitivity, while hormonal replacement therapy (HRT) in turn, has been implicated in increasing mammographic density and is considered a risk factor for breast cancer by itself. The inter-relationship between HRT, breast density and any mammographic or sonographic finding requiring further investigation has not been fully investigated.

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Background: Acute appendicitis (AA) is one of the most common indications for emergency abdominal surgery.

Objectives: To assess the diagnostic and prognostic value of serum bilirubin and liver enzyme levels in the management of acute appendicitis.

Methods: Consecutive emergency department patients referred for a surgical consult for suspected AA were prospectively enrolled in the study.

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Translational studies suggest that excess perioperative release of catecholamines and prostaglandins may facilitate metastasis and reduce disease-free survival. This trial tested the combined perioperative blockade of these pathways in breast cancer patients. In a randomized placebo-controlled biomarker trial, 38 early-stage breast cancer patients received 11 days of perioperative treatment with a β-adrenergic antagonist (propranolol) and a COX-2 inhibitor (etodolac), beginning 5 days before surgery.

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Background: Diagnosis of abdominal lymphadenopathy is challenging when not accompanied by peripheral lymphadenopathy. Computed tomography-guided core-needle biopsy has largely replaced open procedures in recent years, but this approach is limited by access to the anatomic region and the amount of tissue acquired.

Objectives: To demonstrate the feasibility of the laparoscopic approach in obtaining abdominal lymph node biopsies and to evaluate the diagnostic adequacy of the technique.

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Introduction: Laparoscopic adrenalectomy is the surgical treatment for various adrenal diseases. The procedure is a common surgical practice for urologists and general surgeons and requires fundamental laparoscopic skills, nowadays common in the surgical education of residents in these practices. The aim of this study is to assess whether laparoscopic adrenalectomy differs in outcome between certified and trained surgeons and surgical residents and whether the learning curve changes the endpoint of the surgery.

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The purpose of this study was to assess pathological complete response and whether it serves a surrogate for survival among patients receiving neo-adjuvant doxorubicin-cyclophosphamide followed by paclitaxel for triple-negative breast cancer with respect to BRCA1 mutation status. From a neo-adjuvant systemic therapy database of 588 breast cancer cases, 80 triple-negative cases who had undergone BRCA genotyping were identified. Logistic regression model was fitted to examine the association between BRCA1 status and pathological complete response.

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Background: High density breast mammography has been associated with a greater risk for breast cancer and an increased likelihood of false negative results.

Objectives: To assess whether the degree of mammographic breast density correlates with increased risk for the presence of radiographic findings requiring further histological investigation.

Methods: Included in the study were 2760 consecutive screening mammograms performed in a large volume, early detection mammography unit.

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Background: Acute appendicitis (AA) is a common indication for urgent abdominal surgery. CA-125 glycoprotein antigen is a non-specific marker for epithelial ovarian cancer; CA-125 serum levels also increased in the conditions of peritoneal inflammation. The aim of this study was to examine the correlation between serum CA-125 levels and AA.

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In recent years the acellular dermal matrix (ADM) has gained popularity in prosthetic breast reconstruction. These procedures involve placement of a closed suction drain in the reconstructed breast. Although it is now widely accepted that ADM has an overall positive effect on the outcome of breast reconstruction, data regarding its effect on postoperative drain secretions is lacking.

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Factor VII deficiency is the most common among the rare autosomal recessive coagulation disorders worldwide. In factor VII deficient patients, the severity and clinical manifestations cannot be reliably determined by factor VII levels. Severe bleeding tends to occur in individuals with factor VII activity levels of 2% or less of normal.

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Background: The treatment of rectal cancer has changed significantly over the last few decades. Advanced surgicil techniques have led to an increase in the rate of sphincter-preserving operations, even for low rectal tumors. This was facilitated by preoperative oncologic treatment and the use of chemoradiation to downstage the tumor before resection.

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Background: The traditional open approach to incarcerated inguinal hernia has several drawbacks including difficulty avoiding tension in the swollen and edematous tissues leading to a higher recurrence rate, possible contamination of the mesh if it is implanted in an area of bowel strangulation, and proper evaluation of whether ischemic bowel requires resection or not, which may mandate laparotomy. This study aimed to evaluate an approach that combines intraperitoneal laparoscopic exploration with hernia reduction and total extraperitoneal (TEP) repair of the hernia.

Methods: An exploratory laparoscopy is performed.

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Background: Laparoscopic resection of transverse colon carcinoma is technically demanding and was excluded from most of the large trials of laparoscopic colectomy. The aim of this study was to assess the safety, feasibility, and outcome of laparoscopic resection of carcinoma of the transverse colon.

Methods: A retrospective review was performed to identify patients who underwent laparoscopic resection of transverse colon carcinoma.

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Background: The use of laparoscopy in the treatment of gastric malignancy is still controversial. However, several reports suggest that the laparoscopic approach may be safe and applicable. The aim of this study was to review our experience with laparoscopic gastrectomy for gastric malignant tumors amenable to subtotal gastrectomy, and assess the oncologic outcome.

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Background: Trastuzumab in combination with adjuvant chemotherapy improves disease free survival and overall survival in HER2 over-expressing breast cancer patients. Data concerning the use of trastuzumab in the neo-adjuvant setting is limited. We aimed to compare outcome of HER2 over-expressing breast cancer patients treated with either standard chemotherapy, consisting of doxorubicin, cyclophosphamide and a taxane to outcome of patients treated with the same chemotherapy regimen with the addition of trastuzumab in concurrence with paclitaxel.

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Background: Major abdominal surgery is associated with early postoperative gastrointestinal dysfunction, which may lead to abdominal distention and vomiting, requiring nasogastric (NGT) tube insertion. This study aimed to compare the rates of early postoperative NGT insertion after open and laparoscopic colorectal surgery.

Methods: A retrospective chart review was performed for patients who underwent colorectal surgery with removal of the NGT at completion of surgery.

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Background: Postoperative adhesions are a major cause of morbidity, accounting for approximately 5% of the readmissions of surgical patients. Bowel obstruction is attributed to adhesions in more than half of the cases, many of which are following colon and rectal surgery. Laparoscopic surgery has the potential advantage of reduced adhesion formation owing to attenuated surgical trauma, less tissue handling, and smaller scars.

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Background: Within a decade since laparoscopy was used in cholecystectomy it has become the preferred approach in many abdominal procedures. Laparoscopic colon and rectal surgery has not yet been adopted by the majority of surgeons, due to technical complexity and reservation regarding its oncological safety. As data and experience accumulate, this attitude is gradually changing.

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Technical information for handling fine-needle aspiration samples from thyroid lesions for WETSEM electron microscopy is presented. The use of wet SEM technology maintains cytological features of the thyroid cells, in the atmospheric electronic microscope chamber without the need for solidification. Images are presented from normal and pathological thyroid specimens showing subcellular elements unavailable to the cytopathologist by light microscopy.

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Background: Restoration of bowel continuity after Hartmann's procedure is a major surgical procedure associated with substantial morbidity and occasional mortality. The authors review their experience with laparoscopically assisted reversal of Hartmann's procedure (LARH) to assess difficulties and potential advantages associated with this procedure.

Methods: A retrospective chart review of a prospectively entered database was performed to identify patients who underwent LARH over a period of 7 years.

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Background: Preoperative mechanical bowel preparation is aimed to reduce the risk of infectious complications, and its utility is a dogma in left-sided large bowel anastomosis. The aim of this study was to specifically assess whether colocolonic and colorectal anastomoses may be safely performed without preoperative mechanical bowel preparation.

Methods: Patients undergoing elective colon and rectal surgery with primary colocolonic or colorectal anastomosis were prospectively randomized into two groups.

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Background: Mechanical bowel preparation prior to colorectal surgery may reduce infectious complications, facilitate tumor localization, and allow intraoperative colonoscopy, if required. However, recent data suggest that mechanical bowel preparation may not facilitate a reduction in infectious complications. During laparoscopic colectomy, manual palpation is blunt, thereby potentially compromising tumor localization.

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Purpose: Infectious complications pose a significant cause of morbidity in colon and rectal surgery. This study was designed to assess the effect of bowel preparation on spillage of bowel contents into the peritoneal cavity during colorectal surgery, and its potential effect on the rate of postoperative infectious complications.

Methods: The quality of bowel preparation and the incidence of spillage of bowel contents were prospectively assessed in patients undergoing elective colon and rectal resection.

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Background: Laparoscopic appendectomy (LA) frequently is performed by residents during calls. This study aimed at evaluating residents' surgical skills using parameters of operating time, length of hospital stay (LOS), and conversion rate in correlation with the operating team's level of seniority. In addition, this study compared the operating time for LA with that for open appendectomy performed by the same teams, and identified deterministic factors that have an impact on such parameters.

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