Publications by authors named "Sivan Lieberman"

Introduction: Microsatellite stable metastatic colorectal cancer (MSS mCRC) is largely refractory to immune checkpoint inhibition. We hypothesized that a combination of intratumoral TLR9 agonist, radiosurgery and dual PD-1 and CTLA-4 blockade would induce a local focus of immune stimulation, evoking a systemic immune response.

Patients And Methods: In this phase I single-institution study, patients with MSS mCRC were treated with a priming dose of s.

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Purpose: The purpose of this study was to define the full spectrum of pulmonary computed tomography (CT) changes characteristic of postablation pulmonary vein stenosis (PVS).

Materials And Methods: We retrospectively reviewed our pulmonary vein isolation database. PVS was graded as follows: grade 1:<50%, grade 2: 50% to 75%, grade 3: 76% to 99%, and grade 4: total occlusion.

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Objective: Intensity-modulated radiotherapy (IMRT) has better normal-tissue sparing compared with 3-dimensional conformal radiation (3DCRT). We sought to assess the impact of radiation technique on pathological and clinical outcomes in locally advanced non-small cell lung cancer (LANSCLC) treated with a trimodality strategy.

Methods: Retrospective review of LANSCLC patients treated from August 2012 to August 2018 at Sheba Medical Center, Israel.

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Background: Neoadjuvant chemo-radiation therapy (CRT) dosages in locally advanced non-small cell lung cancer (NSCLC) were traditionally limited to 45 Gray (Gy).

Objectives: To retrospectively analyze outcomes of patients treated with 60 Gy CRT followed by surgery.

Methods: A retrospective chart review identified patients selected for CRT to 60 Gy followed by surgery between August 2012 and April 2016.

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Purpose: The aim of the study was to assess the pulmonary temporal changes after bronchoscopic lung volume reduction (BLVR) using sealants for treatment of emphysema.

Materials And Methods: We retrospectively assessed all chest computerized tomography (CT) and F-18 fluorodeoxyglucose (FDG) positron emission tomography CT scans of patients treated at our institution with BLVR.

Results: Eleven patients were treated with sealants: 4 with biological sealants and 7 with synthetic sealants.

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Potential pitfalls in the interpretation of diseases involving the mediastinum are seen when imaging with computed tomography and [18F]-fluoro-2-deoxy-d-glucose positron emission tomography. These pitfalls can involve any mediastinal structure, including the mediastinal vessels, heart, lymph nodes, thymus, trachea, esophagus, and fat. Misinterpretation of normal variants or benign conditions as pathology can affect staging and alter treatment.

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This report describes the use of confocal laser microscopy (CLM) with CT-guided transthoracic needle biopsy (TTNB) for the diagnosis of heterogeneous large mediastinal and lung tumors. The procedure was performed in five patients diagnosed with a mediastinal mass and five patients diagnosed with a lung mass. CLM was used before CT-guided TTNB.

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IgG4-related disease is a fibroinflammatory disease in which the organs involved share similar pathological findings. Chest disease has been recently clinically and radiologically characterized. Most reports advocate prompt immunosuppressive therapy and describe a fast and good response.

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Background: An outbreak of respiratory illness caused by a novel swine-origin influenza virus (influenza A/H1N1 2009) that began in Mexico was declared a global pandemic by the World Health Organization in June 2009. The pandemic affected many countries, including Israel.

Objectives: To compare the course of chest radiographic and computed tomography findings in patients who survived and those who died following admission to the intensive care unit (ICU) or intubation due to severe laboratory-confirmed swine-origin influenza A/H1N1 2009.

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Purpose: The initial evaluation and treatment of trauma victims should follow a planned approach, as delineated by the Advanced Trauma Life Support protocol, with the main concern securing a patent airway. When trauma has been associated with maxillofacial injury, it can complicate airway management owing to aspirated avulsed teeth or dental prosthetic devices. In such cases, endotracheal intubation can be life-threatening, if the foreign bodies are pushed into the upper respiratory tract.

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Background: Occult breast cancer without clinically or mammographically detectable breast tumor is an uncommon presentation.

Objectives: To assess the role of breast MRI in women with metastatic carcinoma and an occult primary, and to define the MRI characteristics of the primary breast tumor.

Methods: This retrospective study evaluated 20 women with metastatic carcinoma of unknown origin who underwent breast MRI between 2000 and 2006.

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Percutaneous image-guided splenic procedures are seldom performed due to fear of complications, mainly hemorrhage. Percutaneous splenic invasive procedures are, however, safe, and in most cases, the complication rates are similar to those of other abdominal organs. In most patients, biopsy of a focal splenic lesion establishes the diagnosis.

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We report a case of hemimegalencephaly diagnosed by prenatal MRI with an emphasis on its appearance on diffusion-weighted images. This case shows that in this condition the enlarged hemisphere may show restricted diffusion on prenatal MRI. In our opinion, this finding may result from a combination of increased cellularity and advanced myelination in the affected hemisphere.

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Objective: To evaluate the diagnostic efficacy of image-guided cutting-edge-needle biopsy of peripheral lymph nodes and superficial masses for the diagnosis of lymphoma, for which many still advocate open surgical resection.

Methods: A retrospective analysis was performed of the medical records of 114 lymphoma patients who presented with peripheral lymphadenopathy and superficial masses and who underwent diagnostic image-guided biopsy. There were 69 non-Hodgkin lymphoma patients, 38 Hodgkin lymphoma patients, and 7 patients who were evaluated for histologic transformation of CLL or high grade lymphoma.

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Objective: To describe the spectrum and frequency of computed tomographic (CT) features in tuboovarian abscess (TOA) in order to increase the utility of computed tomography in diagnosing this condition.

Study Design: Search of our hospital registry found 22 patients diagnosed with TOA who underwent pelvic tomography between the years 1998 and 2001. A retrospective review of their CT scans was performed, and the CT features of TOA were recorded.

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Behçet disease is a multisystemic and chronic inflammatory disorder of unknown cause that is characterized by recurrent oral and genital ulcerations, ocular manifestations, and additional clinical manifestations in multiple organ systems. Behçet disease involving the chest can manifest as a wide spectrum of abnormalities. Although conventional chest radiography is commonly used for initial assessment, spiral computed tomography can demonstrate the entire spectrum of thoracic manifestations of Behçet disease, including abnormalities of the vessel lumen and wall, perivascular tissues, lung parenchyma, pleura, and mediastinal structures.

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Background: Primary hepatic sarcoma is a rare tumour with a poor prognosis.

Methods: From 1997 to 2002 eight patients had liver resection for primary sarcoma of the liver at our institution. The clinical characteristics, imaging findings, surgical procedures, adjuvant therapy and outcome were retrospectively reviewed.

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Objective: We estimated the accuracy and safety of imaging-guided needle biopsy for the diagnosis of suspected malignant lymphoma in patients with a splenic lesion.

Conclusion: Imaging-guided small-bore cutting-edge needle biopsy of splenic lesions is a safe procedure. In most patients with primary or recurrent lymphoma, the disease subtype can be diagnosed reliably.

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Background: Standard anticoagulatn therapy for lower extremity DVT does not distinguish between proximal and distal veins. Catheter directed thrombolytic therapy is a new emerging aggressive option for suitable patients with proximal DVT.

Objectives: Review of the literature and presentation of two patients in whom the procedure was successfully performed.

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