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עמוד בית
Fri, 19.07.24

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January 2014
Johad F. Khoury, Myriam Weyl Ben-Arush, Michael Weintraub, Elisha Waldman, Boris Futerman, Eugene Vlodavsky and Sergey Postovsky
 Background: In osteosarcoma the histological response, measured by the percentage of tumor necrosis, constitutes one of the most significant predictive factors, with better survival in patients whose tumor necrosis is ≥ 90%.

Objectives: To determine if the decrease rate of serum alkaline phosphatase (SAP) levels during the first month of neoadjuvant chemotherapy could serve as a predictive indicator of tumor necrosis and clinical outcome.

Methods: We analyzed the medical files of 53 osteosarcoma patients (19 females, 34 males) (median age 16 years, range 8–24); the disease was metastatic in 12 and localized in the other 41.

Results: The histological responses were good in 38 patients (71.7%) and poor in 15 (28.3%). At a median follow-up of 50 months, 34 patients (64.2%) had no evidence of disease and 19 (35.8%) had died from the disease. High levels of SAP at diagnosis correlated with worse survival (P = 0.002). There was no difference in overall survival between patients whose SAP decrease rate was > 25% and those with a rate < 25% (P = 0.14). Among female patients, "rapid" SAP responders had better survival than "slow" responders (P = 0.026). In patients with metastases the SAP decrease rate was positively correlated with survival (P = 0.042).

Conclusions: There was no evidence that "rapid" SAP responders had a higher percentage of tumor necrosis than "slow" responders, although female "rapid" SAP responders had a better prognosis than "slow" responders. Patients with metastases at presentation and "rapid" SAP response had better prognoses.

Emily Lubart, Arthur Leibovitz, Vadim Shapir and Refael Segal
Background: Musculoskeletal and joint disorders are extremely common in the elderly. They directly affect mobility, gait stability, quality of life, and independence.

Objectives: To assess the nature of joint problems encountered in a geriatric inpatient population and evaluate the contribution of a rheumatologist.

Methods: We reviewed the rheumatology consultations that were conducted in a geriatric medical center over a 10 year period.

Results: A total of 474 consultations were held; most of these patients (86%) were hospitalized in the acute geriatric departments, 10% in the rehabilitation ward and 4% in the long-term care wards. Some patients were seen more than once. The rheumatologic joint problem was the main reason for hospitalization in 53% of these patients. Monoarthritis was the most frequent complaint (50%), followed by pauci-articular arthritis (two to five joints) in 30% of patients. Arthrocentesis, diagnostic and therapeutic, was performed in 225 patients, most of them on knee joints (81%). The most frequent diagnosis was osteoarthritis with acute exacerbation (28%), followed by gout (18%), pseudo-gout (9%) and rheumatoid arthritis (9%). In 86 cases (18%) the diagnosis was a non-specific rheumatologic problem: arthralgia, non-specific generalized pain, or fibromyalgia.

Conclusions: Prompt and appropriate evaluation, as well as arthrocentesis and treatment initiation, including local injections, were made possible by the presence of an in-house rheumatologist. 

Asnat Raziel, Nasser Sakran, Amir Szold, Ofir Teshuva, Mirit Krakovsky, Oded Rabau and David Goitein
 Background: Laparoscopic sleeve gastrectomy (LSG) is gaining credibility   as a simple and efficient bariatric procedure with low surgical risk. Surgical treatment for morbid obesity is relatively rare in adolescents, hence few results have been accumulated so far.

Objectives: To prove the safety and efficacy of LSG surgery in an adolescent population

Methods: Data were prospectively collected regarding adolescent patients undergoing LSG. All patients underwent pre- and postoperative medical and professional evaluation by a multidisciplinary team.

Results: Between the years 2006 and 2011, 32 adolescents underwent LSG in our center (20 females and 12 males). Mean age was 16.75 years (range 14–18 years), mean weight was 121.88 kg (83–178 kg), and mean body mass index 43.23 (35–54). Thirty-four comorbid conditions were identified. In all the patients LSG was the primary bariatric procedure. Mean operative time was 60 minutes (range 45–80 min). There were two complications (6.25%): an early staple line leak and a late acute cholecystitis. There was no mortality. Mean percent excess weight loss at 1, 3, 6, 9,12, 24, 36, 48, and 60 months post-surgery was 27.9%, 41.1%, 62.6%, 79.2%, 81.7% , 71%, 75%, 102.9% and 101.6%, respectively. Comorbidities were completely resolved or ameliorated within 1 year following surgery in 82.4% and 17.6%, respectively.

Conclusions: LSG is feasible and safe in morbidly obese adolescents, achieving efficient weight loss and impressive resolution of comorbidities. Further studies are required to evaluate the long-term results of this procedure, as well as its place among other bariatric options. 

Varda Gross-Tsur, Harry Hirsch and Fortu Benarroch
December 2013
Daniel Silverberg, Tal Yalon, Uri Rimon, Emanuel R. Reinitz, Dmitry Yakubovitch, Jacob Schneiderman and Moshe Halak
 Background: Peripheral arterial occlusive disease is common in patients with chronic renal failure requiring dialysis. Despite the increasing use of endovascular revascularization for lower extremity ischemia, the success rates of treating lower extremity ischemia in this challenging population remain obscure. 

Objectives: To assess the results of endovascular revascularization for lower extremity ischemia in dialysis patients.

Methods: We conducted a retrospective review of all dialysis patients who underwent endovascular treatment for critical limb ischemia (CLI) in our institution between 2007 and 2011. Data collected included comorbidities, clinical presentation, anatomic distribution of vascular lesions, amputation and survival rates.

Results: We identified 50 limbs (41 patients). Indications included: gangrene in 22%, non-healing wounds in 45%, rest pain in 31%, and debilitating claudication in 4%. Mean follow-up was 12 months (1–51 months). Nineteen patients required amputations. Freedom from amputation at 5 years was 40%. Factors associated with amputation included non-healing wounds or gangrene (68% and 36% respectively) and diabetes (P < 0.05). The survival rate was 80% after 5 years.

Conclusions:  Despite improvement in endovascular techniques for lower extremity revascularization, the incidence of limb salvage among dialysis patients remains poor, resulting in a high rate of major amputations. 

Osamah Hussein, Jamal Zidan, Michael Plich, Hana Gefen, Roberto Klein, Karina Shestatski, Kamal Abu-Jabal and Reuven Zimlichman

Background: Coronary slow flow phenomenon (CSFP) is a functional and structural disease that is diagnosed by coronary angiogram.    



Objectives: To evaluate the possible association between CSFP and small artery elasticity in an effort to understand the pathogenesis of CSFP.

Methods: The study population comprised 12 patients with normal coronary arteries and CSFP and 12 with normal coronary arteries without CSFP. We measured conjugated diene formation at 234 nm during low density lipoprotein (LDL) oxidation, as well as platelet aggregation. We estimated, non-invasively, arterial elasticity parameters. Mann-Whitney non-parametric test was used to compare differences between the groups. Data are presented as mean ± standard deviation.

Results: Waist circumference was 99.2 ± 8.8 cm and 114.9 ± 10.5 cm in the normal flow and CSFP groups, respectively (P = 0.003). Four patients in the CSFP group and 1 in the normal flow group had type 2 diabetes. Area under the curve in the oral glucose tolerance test was 22% higher in the CSFP than in the normal group (P = 0.04). There was no difference in systolic and diastolic blood pressure, plasma concentrations of total cholesterol, triglycerides, high density lipoprotein, LDL and platelet aggregation parameters between the groups. Lag time required until initiation of LDL oxidation in the presence of CuSO4 was 17% longer (P = 0.02) and homocysteine fasting plasma concentration was 81% lower (P = 0.05) in the normal flow group. Large artery elasticity was the same in both groups. Small artery elasticity was 5 ± 1.5 ml/mmHgx100 in normal flow subjects and 6.1 ± 1.9 ml/mmHgx100 in the CSFP patients (P = 0.02).

Conclusions: Patients with CSFP had more metabolic derangements. Arterial stiffness was not increased in CSFP.

Yacov Shacham, Eran Leshem-Rubinow and Arie Roth
 Studies on trials conducted before the use of thrombolysis demonstrated both short- and long-term benefits of beta-blockers, and one meta-analysis of those trials showed a 25% reduction in 1 year mortality. Treatment with beta-blockers was and continues to be recommended for patients following ST elevation myocardial infarction (STEMI), but many patients failed to receive these agents, mostly because physicians were unconvinced of their benefit. A similar analysis of the studies in STEMI patients treated with thrombolysis also showed an overall 23% reduction in mortality associated with β-blocker use in the era of primary percutaneous coronary intervention (PCI). In the present review, we examine the relationship between the pharmacology of β-blockers and their potential utility in order to review early trials on their post-infarct efficacy and to place these findings in the context of this specific patient population in the era of primary PCI.

November 2013
D. Belkić and K. Belkić
 With our increased understanding of cancer cell biology, molecular imaging offers a strategic bridge to oncology. This complements anatomic imaging, particularly magnetic resonance (MR) imaging, which is sensitive but not specific. Among the potential harms of false positive findings is lowered adherence to recommended surveillance post-therapy and by persons at increased cancer risk. Positron emission tomography (PET) plus computed tomography (CT) is the molecular imaging modality most widely used in oncology. In up to 40% of cases, PET-CT leads to changes in therapeutic management. Newer PET tracers can detect tumor hypoxia, bone metastases in androgen-sensitive prostate cancer, and human epidermal growth factor receptor type 2 (HER2)-expressive tumors. Magnetic resonance spectroscopy provides insight into several metabolites at the same time. Combined with MRI, this yields magnetic resonance spectroscopic imaging (MRSI), which does not entail ionizing radiation and is thus suitable for repeated monitoring. Using advanced signal processing, quantitative information can be gleaned about molecular markers of brain, breast, prostate and other cancers. Radiation oncology has benefited from molecular imaging via PET-CT and MRSI. Advanced mathematical approaches can improve dose planning in stereotactic radiosurgery, stereotactic body radiotherapy and high dose-rate brachytherapy. Molecular imaging will likely impact profoundly on clinical decision making in oncology. Molecular imaging via MR could facilitate early detection, especially in persons at high risk for specific cancers.

I. Strauss, T. Jonas-Kimchi, Z. Lidar MD, D. Buchbut, N. Shtraus, B. W. Corn and A. A. Kanner
 Background: Radiation treatment of spinal and paraspinal tumors has been limited by the tolerance of the spinal cord. As such, therapeutic options are restricted to surgically accessible lesions or the use of suboptimal dosing of external beam irradiation.

Objectives: To evaluate the safety and applicability of the Elekta Synergy-S radiation unit for the treatment of spinal tumors.

Methods: We retrospectively reviewed all patients treated with stereotactic radiosurgery to spinal tumors between November 2007 and June 2011.

Results: Thirty-four patients were treated for 41 lesions. Treatment indications were local tumor control and pain palliation. The mean follow-up was 10.8 ± 11.6 months (range 0.5–38 months). No acute radiation toxicity or new neurological deficits occurred during the follow-up period. Local tumor control was achieved in 21 of the 24 lesions (87.5%) available for radiological follow-up at a median of 9.8 months (range 3–32 months). Good analgesia was achieved in 24/30 lesions (80%) that presented with intractable pain.

Conclusions: The safety and feasibility of delivering single and multiple-fraction stereotactic spinal irradiation was demonstrated and became a standard treatment option in our institution. 

M. P. Cruz-Domínguez, O. Vera-Lastra, A. Deras-Quiñones, F. Jandete-Rivera, P. Grajeda-Lopez, D. Montes-Cortes, G. Medina and L. J. Jara
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