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Dive into the research topics where Lev Bedrin is active.

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Featured researches published by Lev Bedrin.


Cancer Science | 2010

Tumor-host histopathologic variables, stromal myofibroblasts and risk score, are significantly associated with recurrent disease in tongue cancer

Marilena Vered; A. Dobriyan; Dan Dayan; Ran Yahalom; Yoav P. Talmi; Lev Bedrin; Iris Barshack; Shlomo Taicher

Margin status, a major prognostic parameter in oral cancer, was analyzed vis‐à‐vis the histopathologic parameters of risk scores and stromal myofibroblasts. Specimens of tongue carcinoma (n = 50) were submitted to a risk score assignment consisting of the worst pattern of invasion, lymphocytic infiltration, and perineural invasion. Frequency of stromal myofibroblasts (alpha‐smooth muscle actin stain) was assessed. A triple immunostaining assay with E‐cadherin, Ki‐67 and alpha‐smooth muscle actin was used to identify carcinoma cells undergoing epithelial–mesenchymal transition. Margins were considered ‘clean’ if the tumor was ≥5 mm away from them. Patients ≤60 years were considered as ‘young’. Kaplan–Meier survival analysis with univariate and Cox multivariate regression model with stepwise forward selection, and Fisher’s exact tests were used. Abundant myofibroblasts were found in 27 (54%) cases. Carcinoma cells devoid of E‐cadherin but amalgamated with the stromal myofibroblasts were identified in 18 (36%) cases. Local recurrence and overall survival were negatively influenced by abundance of stromal myofibroblasts (P = 0.004 and P = 0.008, respectively). High‐risk scores (P = 0.011), positive margins, and ‘young’ age (P = 0.027, each) had an unfavorable impact on recurrence. Multivariate analysis revealed that only abundance of stromal myofibroblasts had an independent adverse effect on local recurrence (hazard ratio [HR] 4.369; P = 0.014; 95% confidence interval [CI], 1.356–14.074). It seems that abundant stromal myofibroblasts (camouflaging some malignant cells) and high‐risk scores have an unfavorable impact on the risk of recurrence in particular in ‘young’ patients. Therefore, the treatment concept should be adjusted accordingly and target concomitantly the epithelial malignancy and its allied stroma. (Cancer Sci 2009)


Cancer | 2002

Quality of life of nasopharyngeal carcinoma patients

Yoav P. Talmi; Zeev Horowitz; Lev Bedrin; Michael Wolf; Gavriel Chaushu; Jona Kronenberg; M. Raphael Pfeffer

Quality of life (QOL) issues in patients with head and neck carcinoma are of importance beyond the incidence of these tumors because of the impact of the disease and its treatment on external appearance and function of the upper aerodigestive tract. Nasopharyngeal carcinoma (NPC) patients comprise a unique subgroup in whom, to our knowledge, QOL has not been studied directly.


Otolaryngology-Head and Neck Surgery | 2007

The clinical behavior of isolated sphenoid sinusitis

Dror Gilony; Yoav P. Talmi; Lev Bedrin; Yosef Ben-Shosan; Jona Kronenberg

Objective We sought to study the clinical behavior and treatment outcome of isolated sphenoid sinusitis (ISS). Study Design and Setting We conducted a retrospective study of patients diagnosed with ISS in a tertiary medical center over 20 years. Results Of 72 patients with ISS, 79 percent had acute symptoms, 15 percent had chronic symptoms, and 6 percent had incidental radiological findings. Fifteen percent were children. Most patients were diagnosed between January and April (P < 0.01), and increasing incidence was noted over the years (P < 0.001). Headache was the most common presenting symptom (85%). Chronic patients complained also of nasal symptoms (82%). Six patients had a major complication of sinusitis (none of them were children), and two patients died. Immunocompromised patients had more major complications (P ≤ 0.001) and increased mortality (P ≤ 0.01). Conclusion Most patients need conservative treatment alone. However, life-threatening complications are not infrequent. Close observation and early surgical intervention, if needed, provide the mainstay of treatment. Significance This is the first large series that focuses on the clinical behavior, complications, and treatment of ISS.


Head and Neck-journal for The Sciences and Specialties of The Head and Neck | 2005

25-year experience of using a linear stapler in laryngectomy†

Lev Bedrin; Genadi Ginsburg; Zeev Horowitz; Yoav P. Talmi

Stapler application for pharyngeal closure after total laryngectomy allows for rapid watertight closure without field contamination and for potentially reduced fistula rate.


Plastic and Reconstructive Surgery | 1996

Auricular reconstruction with a postauricular myocutaneous island flap: flip-flop flap.

Yoav P. Talmi; Zeev Horowitz; Lev Bedrin; Jona Kronenberg

&NA; Surgical defects of the concha‐helix part of the ear larger than 2 cm may pose a reconstructive challenge. Split‐ or full‐thickness skin grafts or local flaps may be used, and a number of these have been described. Yet cosmetic results are often unsatisfactory. Our experience with a postauricular myocutaneous island flap is described. Eleven patients (12 ears), aged 48 to 89 years, underwent the procedure under local anesthesia following excision of conchal bowl malignant tumors that included the cartilage underlying the skin. The surgical technique is described in detail. Few complications were encountered, and cosmetic results were excellent. In four ears, resection margins extended into the ear canal, and that portion was allowed to heal satisfactorily by secondary intention. We recommend the use of this flap for practical, safe, and early good cosmetic results.


Laryngoscope | 2005

Limited use of complementary and alternative medicine in Israeli head and neck cancer patients.

Yoav P. Talmi; Arkadi Yakirevitch; Lela Migirov; Zeev Horowitz; Lev Bedrin; Zvi Simon; M. Raphael Pfeffer

Hypothesis/Objective: The use of complementary or alternative medicine (CAM) is growing among cancer patients. A Medline search failed to reveal any dedicated report of CAM use specifically in patients with head and neck cancer (HNC).


Journal of Laryngology and Otology | 2001

Upper jugular lymph nodes (submuscular recess) in non-squamous-cell cancer of the head and neck: surgical considerations.

Yoav P. Talmi; Zeev Horowitz; Michael Wolf; Lev Bedrin; Michael Peleg; Ran Yahalom; Jona Kronenberg

Cervical lymphadenectomy of level II encompasses lymph nodes associated with the upper internal jugular vein and the spinal accessory nerve (SAN). Removal of tissue superior to the SAN (submuscular recess-(SMR)) was recently shown to be unwarranted in selected cases of squamous-cell cancer. Thirty-five patients with non-squamous-cell cancer (SCC) of the head and neck treated with cervical lymphadenectomy were prospectively evaluated. Thirty-seven neck dissection specimens were histologically analysed for the number of lymph nodes involved with cancer. At the time of surgery, level II was separated into the supraspinal accessory nerve component (IIa) and the component anterior to the SAN (IIb). Neck dissections were most commonly performed for cancer of the thyroid gland (19) followed in frequency by the parotid gland (seven), skin: melanoma (five), basal-cell cancer (two), and other sites (four). Twenty-five neck dissections were modified-selective procedures and 12 were either radical or modified radical neck dissection. Twenty-nine necks were clinically N+ and eight N0. Histological staging was pathologically N+ in 32 neck dissection specimens. Level IIb contained an average of 12 nodes and the IIa component contained a mean of 5.0 nodes. Level II contained metastatic disease in 28 of 32 histologically node-positive specimens (87 per cent). Level IIa was involved with cancer in six cases (16 per cent), five of which were pre-operatively staged as clinically N+. All cases (100 per cent) with level IIa involvement had level IIb positive nodes. Three of the level IIa positive cases were cancer of the parotid gland comprising 43 per cent of this sub-group of patients. Incidence of involvement of SMR in non-SCC cases is not uncommon. The additional time required and morbidity associated with dissection of the supraspinal accessory nerve component of level II are probably justified when performing neck dissection in cancer of the thyroid gland. The SMR should be excised in cancer of the parotid gland. Large-scale prospective controlled studies with long-term follow-up periods are necessary to support resection of level IIb only.


Cancer | 2001

Pretreatment prevalence of hypothyroidism in patients with head and neck carcinoma.

Sharon Mini; Shay Dori; Zeev Horowitz; Lev Bedrin; Michael Peleg; Michael Wolf; Yitzhak Shoshani; Shlomo Taicher; Jona Kronenberg; Yoav P. Talmi

Hypothyroidism in the normal population age > 60 years is encountered in the range of 0.5–5% clinically, and 5–20% have subclinical hypofunction. Hypothyroidism is recognized as a common complication of treatment in patients with head and neck carcinoma (HNC) and is reported in up to 75% of patients who receive combined treatment. Surprisingly, base‐line pretreatment measurements of thyroid function in large series of patients have not been reported.


Laryngoscope | 2002

Syndrome of Inappropriate Antidiuretic Hormone or Arginine Vasopressin Secretion in Patients Following Neck Dissection

Galia Zacay; Lev Bedrin; Zeev Horowitz; Michael Peleg; Ran Yahalom; Jona Kronenberg; Shlomo Taicher; Yoav P. Talmi

Objectives/Hypothesis The syndrome of inappropriate antidiuretic hormone or arginine vasopressin secretion (SIADH) is a disorder in which release of antidiuretic hormone is independent of plasma osmolarity, resulting in fluid retention and development of dilutional hyponatremia. The incidence of SIADH following neck dissection was found to be 18% to 30% in two separate reports. The incidence of SIADH in a cohort of patients who underwent neck dissection was prospectively studied.


British Journal of Plastic Surgery | 2003

Preservation of the facial artery in excision of the submandibular salivary gland

Yoav P. Talmi; Michael Wolf; Lev Bedrin; Zeev Horowitz; Shay Dori; Gavriel Chaushu; Ran Yahalom; Shlomo Taicher; Jona Kronenberg

BACKGROUND The accepted method for submandibular gland excision traditionally includes ligation of the facial artery (FA) as suggested by a host of surgical atlases. Preservation of the FA may be significant in reconstructive procedures of the head and neck and its ligation may altogether be obviated. OBJECTIVE Prospective feasibility study of FA preservation in submandibular gland excision. MATERIALS AND METHODS Patients undergoing excision of the submandibular salivary glands from September 1999 through August 2001 were prospectively included. The FA was dissected and only its glandular branches ligated. Exclusion criteria were primary benign or malignant tumors of the submandibular salivary gland or metastatic disease involving the gland or level I of the neck. In cases where the primary tumor involved the floor of mouth, anterior tongue or mandible, resection of level I contents included the FA even in N0 necks. RESULTS AND CONCLUSIONS 104 patients (116 procedures) were included in the study. 81 patients underwent resection of the gland with preservation of the FA. The vessel was sacrificed in 35 necks because of metastases or primary tumor and in two cases of chronic sialadenitis. One patient had a postoperative hematoma following neck dissection requiring re-exploration. The source of bleeding was not found to be related to the FA. Contrary to accepted methodology, the FA may readily be preserved in surgery of the submandibular salivary glands. We suggest preservation of the FA in all cases of procedures for benign disease and in selected cases of malignancy.

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