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https://www.readbyqxmd.com/read/29089355/assessment-of-retinoblastoma-rna-reflux-after-intravitreal-injection-of-melphalan
#1
Ursula Winter, Michael Nicolas, Mariana Sgroi, Claudia Sampor, Ana Torbidoni, Adriana Fandiño, Guillermo L Chantada, Francis L Munier, Paula Schaiquevich
BACKGROUND: Intravitreal injection of chemotherapy in retinoblastoma eyes with vitreous seeds may lead to a risk of extraocular tumour dissemination that has not been assessed so far. AIMS: To develop a sensitive and clinically feasible technique to assess for potential retinoblastoma cell reflux after intravitreal injection of melphalan. METHODS: Filter papers were cut in 6 mm diameter circles and sterilised before use. Eyes with retinoblastoma vitreous seeds (group D, International Classification) received weekly intravitreal melphalan injections (20 µg or 30 µg/dose) followed by cryotherapy as part of local treatment...
October 31, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29043385/whole-gland-prostate-cancer-cryoablation-with-magnetic-resonance-imaging-guidance-one-year-follow-up
#2
Kristin A Kinsman, Mariah L White, Lance A Mynderse, Akira Kawashima, Karen Rampton, Krzysztof R Gorny, Thomas D Atwell, Joel P Felmlee, Matthew R Callstrom, David A Woodrum
PURPOSE: Patients who develop prostate cancer after prior abdominal perineal resection are poor surgical candidates, and have limited treatment options. Therefore, our goal is to present results from a single institutional experience of four patients who underwent whole gland MRI-guided cryoablation with a history complicated by prior abdominoperineal resection. MATERIALS AND METHODS: Four MRI-guided cryoablative treatments (mean age 64, range 59-69 years) for primary and locally recurrent prostate adenocarcinoma were retrospectively reviewed in patients with prior abdominal perineal resection for colorectal cancer (3) and juvenile polyposis (1)...
October 17, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29037373/fast-inverse-prediction-of-the-freezing-front-in-cryosurgery
#3
REVIEW
Mohamed Hafid, Marcel Lacroix
Cryosurgery has become a well-established technique for the ablation of undesirable tissues such as tumors and cancers. The motivation for this study is to improve the efficacy and safety of this technique. This study presents an inverse heat transfer method for monitoring the motion of the freezing front from a cryoprobe. With the help of a thermocouple inserted into the layer of diseased tissue, the inverse heat transfer method estimates simultaneously the blood perfusion rate and the thermal conductivities of both frozen and unfrozen tissues...
October 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/29026608/diffuse-idiopathic-pulmonary-neuroendocrine-cell-hyperplasia-diagnosed-by-tranbronchoscopic-cryoprobe-biopsy-technique
#4
Ravi Patel, Carolina Collazo-Gonzalez, Arthur Andrews, Jean Johnson, Mark Rumbak, Maxwell Smith
Diffuse idiopathic pulmonary neuroendocrine cell hyperplasia (DIPNECH) remains a poorly understood clinical entity. It is currently classified as a premalignant condition by the World Health Organization (WHO). Symptoms are similar to those associated with obstructive lung disease, including breathlessness and cough. The presentation is often initially ascribed to other diseases such as asthma or chronic obstructive pulmonary disease. Here, we present what we believe is the first described case of DIPNECH diagnosed by transbronchoscopic cryoprobe biopsy...
November 2017: Respirology Case Reports
https://www.readbyqxmd.com/read/29021953/bilateral-lung-disease-extensive-and-diffuse-diagnosis-of-pulmonary-alveolar-proteinosis-by-bronchoscopic-cryobiopsy
#5
Sebastián Gando, Roberto Duré, Damián Violi, Bibiana Vazquez, Gonzalo Labarca, Sebastián Fernandez-Bussy
Pulmonary alveolar proteinosis (PAP) is a rare disease characterized by the intra-alveolar accumulation of a proteinaceous phospholipid-laden material called surfactant. Clinically, this disease should be suspected with respiratory failure in association with a crazy paving pattern on high-resolution chest computed tomography. We report a 24-year-old gentleman who was referred to us for a history of respiratory failure, treatment with invasive ventilation and tracheostomy. His blood exams and biochemistry were normal...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28987657/feasibility-of-percutaneous-cryoablation-of-vertebral-metastases-under-local-anaesthesia-in-asaiii-patients
#6
Alessandro Motta, Giuseppe Caltabiano, Stefano Palmucci, Giovanni Failla, Antonio Basile
PURPOSE: spine metastases are common concern from several primary neoplasms, modern management include percutaneous techniques such as ablation and cementoplasty. This research aims to evaluate the treatment under local anaesthesia in high-risk patients (ASA III). METHODS AND MATERIAL: from January 2013 up to September 2016 we treated via percutaneous cryoablation 11 advanced oncological patients classified as ASA III, then retrospectively a review of their clinical history has been performed...
October 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28955117/percutaneous-image-guided-cryoablation-in-vascular-anomalies
#7
REVIEW
Raja Shaikh
Understanding and management of vascular anomalies has always been intriguing. These disorders exhibit an expected pattern of clinical presentation and progression, and characteristic imaging findings. Significant progress in understanding and treating patients with vascular anomalies has been made in the past quarter century. Newer multidisciplinary domains for treating these disorders with medical drugs and less invasive image-guided or surgical procedures are constantly evolving. Vascular anomalies can exhibit aggressive tumor-like behavior resulting in recurrence or persistent symptoms after treatment...
September 2017: Seminars in Interventional Radiology
https://www.readbyqxmd.com/read/28935657/use-of-hybrid-capillary-tube-setup-on-400mhz-nmr-for-quantitation-of-crucial-low-quantity-metabolites-using-asicco-signal
#8
Ranjeet Tiwari, Deepak Ahire, Hemantha Kumar, Sarmistha Sinha, Siddheshwar Kisan Chauthe, Murali Subramanian, Ramaswamy Iyer, Ramakanth Sarabu, Lakshmi Kant Bajpai
Metabolites of new chemical entities can influence safety and efficacy of a molecule and often times need to be quantified in preclinical studies. However, synthetic standards of metabolites are very rarely available in early discovery. Alternate approaches such as bio-synthesis needs to be explored to generate these metabolites. Assessing the quantity and purity of these small amounts of metabolites with a non-destructive analytical procedure becomes crucial. Quantitative nuclear magnetic resonance (qNMR) becomes the method of choice for these samples...
September 21, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28845941/-ultrasound-guided-percutaneous-cryoablation-of-renal-tumors
#9
D V Enikeev, P V Glybochko, Yu G Alyaev, L M Rapoport, A V Amosov, T M Alekseeva, M E Enikeev, D G Tsarichenko, D V Chinenov, L D Kozmin, Z K Dzhalaev, M S Taratkin
INTRODUCTION: Surgery remains the gold-standard curative treatment for localized (T1) renal carcinoma. However, recent medical-technological advances have led to the development of new minimally invasive treatment options, one of which is percutaneous cryoablation. AIM: To assess the effectiveness and safety of ultrasound-guided percutaneous cryoablation of renal tumors. MATERIALS AND METHODS: The study comprised 12 patients aged 52 to 76 years who underwent ultrasound-guided percutaneous cryoablation of renal tumors from 2015 to 2017...
July 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28840020/transbronchial-cryobiopsy-for-diffuse-parenchymal-lung-disease-a-state-of-the-art-review-of-procedural-techniques-current-evidence-and-future-challenges
#10
REVIEW
Robert J Lentz, A Christine Argento, Thomas V Colby, Otis B Rickman, Fabien Maldonado
Transbronchial lung biopsy with a cryoprobe, or cryobiopsy, is a promising new bronchoscopic biopsy technique capable of obtaining larger and better-preserved samples than previously possible using traditional biopsy forceps. Over two dozen case series and several small randomized trials are now available describing experiences with this technique, largely for the diagnosis of diffuse parenchymal lung disease (DPLD), in which the reported diagnostic yield is typically 70% to 80%. Cryobiopsy technique varies widely between centers and this predominantly single center-based retrospective literature heterogeneously defines diagnostic yield and complications, limiting the degree to which this technique can be compared between centers or to surgical lung biopsy (SLB)...
July 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28838486/evaluation-of-a-novel-cryoprobe-for-atrial-ablation-in-a-chronic-ovine-model
#11
Matthew R Schill, Spencer J Melby, Molly Speltz, May Breitbach, Richard B Schuessler, Ralph J Damiano
PURPOSE: Cryoablation is used in the treatment of atrial fibrillation and other cardiac arrhythmias. This study evaluated a novel 10-cm flexible nitrous oxide cryoprobe in an ovine model of atrial ablation. DESCRIPTION: Six sheep were anesthetized, underwent a left thoracotomy, and were placed on cardiopulmonary bypass. A left atriotomy was performed, and the cryoprobe was applied endocardially for 120 seconds at less than -40°C to 4 sites on the left atrium. The atrium was closed and the animals were allowed to recover...
September 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28828515/changes-in-perioperative-systolic-blood-pressure-in-percutaneous-renal-mass-cryoablation
#12
Sung Yoon Park, Young Taik Oh, Kyunghwa Han, Dae Chul Jung, Man Deuk Kim, Jong Yun Won
OBJECTIVES: To analyze changes in systolic blood pressure (SBP) in the perioperative period of percutaneous renal mass cryoablation and risk factors. METHODS: This retrospective study included 54 patients who underwent percutaneous renal cryoablation. SBP before ablation (pre-Tx), during ablation (intra-Tx), immediately after ablation (post-Tx), and before discharge (discharge) were measured using a BP cuff. The highest SBP during cryoablation was regarded as SBP at intra-Tx...
August 21, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28819722/carbon-and-amide-detect-backbone-assignment-methods-of-a-novel-repeat-protein-from-the-staphylocoagulase-in-s-aureus
#13
Markus Voehler, Maddur Appajaiah Ashoka, Jens Meiler, Paul E Bock
The C-terminal repeat domain of staphylocoagulase that is secreted by the S. aureus is believed to play an important role interacting with fibrinogen and promotes blood clotting. To study this interaction by NMR, full assignment of each amide residue in the HSQC spectrum was required. Despite of the short sequence of the repeat construct, the HSQC spectrum contained a substantial amount of overlapped and exchange broadened resonances, indicating little secondary or tertiary structure. This caused severe problems while using the conventional, amide based NMR method for the backbone assignment...
October 2017: Biomolecular NMR Assignments
https://www.readbyqxmd.com/read/28743122/utility-of-transbronchial-lung-cryobiopsy-in-non-interstitial-diseases
#14
Olivia Sánchez-Cabral, Dina Martínez-Mendoza, Sebastián Fernandez-Bussy, Berenice López-González, Carolina Perea-Talamantes, Rosa María Rivera-Rosales, César Luna-Rivero, José Arturo Martínez-Orozco, Luis Felipe Flores-Suárez, Patricio Santillán-Doherty, Gustavo Reyes-Terán
BACKGROUND: Transbronchial lung cryobiopsy (TLCB), performed with a flexible cryoprobe, is an interventional pulmonology procedure that has proved its diagnostic value for interstitial pulmonary disease. However, it has not been explored extensively as a diagnostic tool for patients with non-interstitial lung pathology, including infectious and malignant diseases. OBJECTIVE: To evaluate the diagnostic yield and safety of an interventional pulmonology approach that integrates TLCB and bronchoalveolar lavage (BAL) for the diagnosis of non-interstitial pulmonary disease...
2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28731368/computerized-planning-of-prostate-cryosurgery-and-shape-considerations
#15
Purva Joshi, Anjali Sehrawat, Yoed Rabin
The current study aims to explore possible relationships between various prostate shapes and the difficulty in creating a computer-based plan for cryosurgery. This research effort is a part of an ongoing study to develop computational means in order to improve cryosurgery training and education. This study uses a computerized planner-a key building block of a recently developed prototype for cryosurgery training. The quality of planning is measured by the overall defect volume, a proprietary concept which refers to undercooled areas internal to the target region and overcooled areas external to it...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28727387/focal-cryotherapy-step-by-step-technique-description
#16
Cristina Redondo, Victor Srougi, José Batista da Costa, Mohammed Baghdad, Guillermo Velilla, Igor Nunes-Silva, Sebastien Bergerat, Silvia Garcia-Barreras, François Rozet, Alexandre Ingels, Marc Galiano, Rafael Sanchez-Salas, Eric Barret, Xavier Cathelineau
INTRODUCTION AND OBJECTIVE: Focal cryotherapy emerged as an efficient option to treat favorable and localized prostate cancer (PCa). The purpose of this video is to describe the procedure step by step. MATERIALS AND METHODS: We present the case of a 68 year-old man with localized PCa in the anterior aspect of the prostate. RESULTS: The procedure is performed under general anesthesia, with the patient in lithotomy position. Briefly, the equipament utilized includes the cryotherapy console coupled with an ultrasound system, argon and helium gas bottles, cryoprobes, temperature probes and an urethral warming catheter...
September 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28717259/a-computerized-tutor-prototype-for-prostate-cryotherapy-key-building-blocks-and-system-evaluation
#17
Yoed Rabin, Kenji Shimada, Purva Joshi, Anjali Sehrawat, Robert Keelan, Dona M Wilfong, James T McCormick
This paper focuses on the evaluation of a prototype for a computer-based tutoring system for prostate cryosurgery, while reviewing its key building blocks and their benchmark performance. The tutoring system lists geometrical constraints of cryoprobe placement, displays a rendered shape of the prostate, simulates cryoprobe insertion, enables distance measurements, simulates the corresponding thermal history, and evaluates the mismatch between the target region shape and a pre-selected planning isotherm. The quality of trainee planning is measured in comparison with a computer-generated plan, created for each case study by a previously developed planning algorithm, known as bubble-packing...
January 28, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28679177/cryotherapy-for-low-risk-prostate-cancer-oncological-and-functional-medium-term-outcomes-a-three-center-prospective-study
#18
Valerian Ciprian Lucan, Franco Lugnani, Salvatore Butticè, Emre Sener, Christopher Netsch, Michele Talso, Francesco Cantiello, Rosa Pappalardo, Carlo Magno
OBJECTIVES: Analyze the oncologic and functional outcomes in patients affected by low risk prostate cancer underwent prostate cryotherapy. Materiasl and methods: It's a prospective tricentric study of 434 patients treated with prostate cryoablation for low risk prostate cancer. By low risk we refer to the D'Amico's risk classification. Two cycles of freezing/thawing are run for each patient following the technique described by Onik. RESULTS: For the 434 patients, the median age was 66 years with a standard deviation of ± 6...
June 30, 2017: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28656131/iatrogenic-bleeding-during-flexible-bronchoscopy-risk-factors-prophylactic-measures-and-management
#19
REVIEW
Maurizio Bernasconi, Coenraad F N Koegelenberg, Angela Koutsokera, Adam Ogna, Alessio Casutt, Laurent Nicod, Alban Lovis
Significant iatrogenic bleeding during flexible bronchoscopy is fortunately rare and usually self-limiting. Life-threatening bleeding, however, can occur, especially after conventional or cryoprobe-assisted transbronchial biopsy. The aim of this review is to provide the practising pulmonologist with a concise overview of the incidence, severity and risk factors for bleeding, to provide sensible advice on prophylactic measures and to suggest a plan of action in the case of significant bleeding. Bronchoscopy units should have a standardised approach and plan of action in the case of life-threatening haemorrhage...
April 2017: ERJ Open Research
https://www.readbyqxmd.com/read/28652159/skin-to-tumor-distance-predicts-treatment-failure-of-t1a-renal-cell-carcinoma-following-percutaneous-cryoablation
#20
Simone L Vernez, Zhamshid Okhunov, Kamaljot Kaler, Ramy F Youssef, Rahul Dutta, Arkadiy Palvanov, Paras Shah, Kathryn Osann, David N Siegel, Igor Lobko, Louis Kavoussi, Ralph V Clayman, Jaime Landman
OBJECTIVE: To determine the impact of skin-to-tumor (STT) distance on the risk for treatment failure following percutaneous cryoablation (PCA). METHODS: We retrospectively reviewed patients who underwent PCA with documented T1a recurrent renal cell carcinoma (RCC) at 2 academic centers between 2005 and 2015. Patient demographics, tumor characteristics, and perioperative and postoperative course variables were collected. Additionally, we measured the STT distance by averaging the distance from the skin to the center of the tumor at 0°, 45°, and 90° on preoperative computed tomography imaging...
June 23, 2017: Urology
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