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Magnetic anastomosis

Tina T Thomas, Daniel H Teitelbaum, Ethan A Smith, Jonathan R Dillman, Ranjith Vellody, Marcus D Jarboe
PURPOSE: Surgical procedures for high imperforate anus have ranged from the posterior sagittal anorectoplasty (PSARP) to laparoscopic-assisted anorectoplasty (LAARP). PSARP bisects the sphincter muscle complex, introducing muscle injury and scarring. LAARP uses a straight trocar to traverse an often non-linear sphincter muscle complex. MRI-assisted LAARP (MRI-LAARP) guides the neorectum precisely through the middle of the entire sphincter complex along its trajectory. We present our experience utilizing MRI intraoperatively during LAARP...
October 8, 2016: Pediatric Surgery International
Sebastien Pesenti, Benjamin Blondel, Alice Faure, Emilie Peltier, Franck Launay, Jean-Luc Jouve
Paediatric Chance fracture are rare lesions but often associated with abdominal injuries. We herein present the case of a seven years old patient who sustained an entrapment of small bowel and an ureteropelvic disruption associated with a Chance fracture and spine dislocation following a traffic accident. Initial X-rays and computed tomographic (CT) scan showed a Chance fracture with dislocation of L3 vertebra, with an incarceration of a small bowel loop in the spinal canal and a complete section of the left lumbar ureter...
September 16, 2016: World Journal of Clinical Cases
Liangsheng Lu, Yunli Bi, Xiang Wang, Shuangsui Ruan
PURPOSE: Midureteral obstruction is an extremely rare condition. This retrospective study assessed the outcomes of laparoscopic ureteroureterostomy (UU) in 13 children with midureteral obstructions. METHODS: Records of patients with midureteral obstruction who underwent laparoscopic end-to-end UU between July 2011 and August 2015 were reviewed. The medical records comprised patient demographic data, intraoperative details, postoperative outcomes, and related complications...
September 26, 2016: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
Alexander C Schippers, Federico Collettini, Ingo G Steffen, Gero Wieners, Timm Denecke, Marianne Pavel, Peter Wust, Bernhard Gebauer
PURPOSE: To evaluate efficacy of computed tomography (CT)-guided high-dose-rate brachytherapy (HDRBT) of neuroendocrine liver metastases (NELM) with the goal of local tumor control (LTC). MATERIALS AND METHODS: This retrospective study included all patients with unresectable NELM treated with CT-guided HDRBT between January 2007 and April 2015. Magnetic resonance imaging follow-up was performed 6 weeks after ablation and then every 3 months. The primary endpoint was LTC...
September 16, 2016: Journal of Vascular and Interventional Radiology: JVIR
Sung Ill Jang, Kwang-Hun Lee, Hong Jin Yoon, Dong Ki Lee
BACKGROUND & AIMS: Although non-surgical methods produce high clinical success rates in the treatment of benign biliary stricture (BBS), conventional methods are not always successful in cases of severe biliary stricture or complete obstruction. Therefore, the efficacy of magnetic compression anastomosis (MCA) for treatment of refractory BBS was evaluated in a single-center, nonrandomized study. METHODS: MCA was performed in patients with BBS that was not resolved by conventional endoscopic or percutaneous treatments...
September 9, 2016: Gastrointestinal Endoscopy
Justin E Friske, Vipul Sharma, Stephanie A Kolpin, Nicholas P Webber
Glomus tumors are rare benign hamartomas arising from the neuromyoarterial glomus body, a highly specialized arteriovenous anastomosis responsible for thermoregulation. Although classically associated with a subungual location, less common extradigital glomus tumors can present a diagnostic challenge because of their rarity and nonspecific presentation. This case report adds to the literature of proven extradigital glomus tumors with documented pathologic and magnetic resonance imaging characteristics and describes their place in the differential for soft tissue mass of the wrist...
September 2016: Radiology case reports
Erkan Parlak, Aydın Seref Koksal, Fahrettin Kucukay, Ahmet Tarık Eminler, Bilal Toka, Mustafa Ihsan Uslan
BACKGROUND AND AIMS: Magnetic compression anastomosis is a rescue technique for recanalization of complete biliary strictures. Here, we present magnetic compression anastomosis with novel through-the-scope magnets in patients with complete duct-to-duct anastomosis obstruction after liver transplantation. METHODS: The magnets were 2 and 2.4 mm in diameter, with a hole at the center for inserting a guidewire. One of the magnets was advanced through the scope up to the distal site of the stricture by using a 7F pusher...
August 24, 2016: Gastrointestinal Endoscopy
Sofia Vitor, Alexandre Oliveira Ferreira, João Lopes, José Velosa
We present the case of an 18-year-old male patient that was referred to our gastrenterology department with history of intermittent painless hematochezia since childhood. During such instances, he was diagnosed with bowel intussusception, eosinophilic gastroenteritis and inflammatory bowel disease at 4, 6 and 8 years old, respectively. He underwent treatment with 5-aminosalicylic acid for two years, without improvement of symptoms. He was then lost to follow-up until our observation. His physical examination was unremarkable except for digital rectal examination which found a nodular compressible mass by the palpating finger...
August 2016: Revista Española de Enfermedades Digestivas
Zhan-Fei She, Xiao-Peng Yan, Feng Ma, Hao-Hua Wang, Huan Yang, Ai-Hua Shi, Liang Wang, Xin Qi, Bin Xiao, Yu-Liang Zou, Yi Lv
INTRODUCTION AND HYPOTHESIS: Rectovaginal fistula (RVF) is an abnormal epithelium-lined connection between the rectum and vagina. The primary effective treatment is surgical repair, but recurrence remains a challenge. Magnetic compression anastomosis (MCA), an alternative to suturing, has been developed to generate an anastomosis between various hollow viscera. We hypothesized that the MCA approach could be used to treat RVF. METHOD: We designed a novel MCA device for RVF treatment and evaluated the magnetic compression procedure in a RVF pig model in comparison with the traditional suturing procedure...
August 16, 2016: International Urogynecology Journal
Seiichiro Shishido, Takeshi Kawamura, Yuko Hamasaki, Yusuke Takahashi, Yoshihiro Itabashi, Masaki Muramatsu, Hiroyuki Satoh, Atsushi Aikawa
BACKGROUND: Children with a compromised inferior vena cava (IVC) were previously considered unsuitable for kidney transplantation because of the technical difficulties and the increased risk of graft thrombosis secondary to inadequate renal venous outflow. METHODS: We conducted a retrospective study of 11 transplants in 9 patients with end-stage renal disease and thrombosed IVCs who received adult kidney allografts between 2000 and 2015. The mean age at transplantation was 7...
June 2016: Transplantation Direct
T Urbanowicz, M Michalak, A Kociemba, E Straburzyńska-Migaj, S Katarzyński, S Grajek, M Jemielity
BACKGROUND: Tricuspid valve regurgitation in reported in >20% of heart recipients. It severity has not only clinical impact, but it is also associated with increased mortality. Risk factors for developing tricuspid valve dysfunction include allograft rejection, donor/recipient pericardial cavity mismatch, preoperative transpulmonary gradient and vascular resistance, biatrial anastomosis technique, and biopsy-induced injury. Tricuspid valve annulus distention is reported to causative factor for most common type of tricuspid valve dysfunction after heart transplantation...
June 2016: Transplantation Proceedings
Milljae Shin, Jae-Won Joh
Apart from noticeable improvements in surgical techniques and immunosuppressive agents, biliary complications remain the major causes of morbidity and mortality after living donor liver transplantation (LDLT). Bile leakage and stricture are the predominant complications. The reported incidence of biliary complications is 15%-40%, and these are known to occur more frequently in living donors than in deceased donors. Despite the absence of a confirmed therapeutic algorithm, many approaches have been used for treatment, including surgical, endoscopic, and percutaneous transhepatic techniques...
July 21, 2016: World Journal of Gastroenterology: WJG
Manuel Hernando Rydings, Pilar Marín Palacios, Ana M Aragón-Sánchez, Esther Bravo Ruiz, Victor Lopez-Dominguez, Isaac Martínez López, Cristina Fernández Pérez, Amaia Bilbao González, Francisco Javier Serrano Hernando, Reyes Vega Manrique, Antonio Hernando Grande
BACKGROUND: Because of the unique electromagnetic characteristics of the magnetoelastic microwire, the changes in the pressure of a fluid will provoke a variation of the mechanical pressure on the sensor, which will cause a variation of its magnetization that will be detectable wirelessly. Thus, a wireless system can be developed for following up vascular surgery procedures. METHODS AND RESULTS: The sensor consists of a magnetoelastic microwire ring, which was integrated into an in vitro model with pulsatile flow...
2016: Journal of the American Heart Association
Yusuke Shimoda, Toshiya Osanai, Syunsuke Terasaka, Hiroyuki Kobayashi, Shigeru Yamaguchi, Shogo Endo, Kanako Hatanaka, Kiyohiro Houkin
Embosphere<sup>®</sup> was approved in Japan for embolizing intracranial arteries for the reduction of intraoperative bleeding in January 2014. Until August 2015, we performed embolization for four meningiomas using Embosphere<sup>®</sup>. We performed an initial evaluation of all the cases, including evaluation of the clinical courses, change in the maximum tumor diameters and volumes, alteration in the appearance on magnetic resonance imaging(MRI), amount of intraoperative bleeding, complications, and histopathological findings...
July 2016: No Shinkei Geka. Neurological Surgery
G Ersoz, F Tekin, H Bozkaya, M Parildar, I Turan, O Ozutemiz, O Tekesin
No abstract text is available yet for this article.
January 2016: Acta Gastro-enterologica Belgica
Fnu Asad-Ur-Rahman, Aamer Abbass, Umair Majeed, Udayakumar Navaneethan
Symptomatic gastrointestinal (GI) involvement of melanoma is rare, however, it is a frequent autopsy finding in patients with primary cutaneous melanoma. We present a case of metastatic cutaneous melanoma with initial asymptomatic jejunal involvement as found on a positron emission tomography (PET) scan, with subsequent duodenal perforation. A 69-year-old man presented to the hospital with a three-week history of worsening headache, dizziness, and vomiting with a history of Clark level III malignant melanoma that was completely excised from the right flank three years ago at the hospital...
2016: Curēus
Alberto De Gobbi, Alessandro Morlacco, Claudio Valotto, Fabio Vianello, Filiberto Zattoni
A 74-year-old male came to our clinic for rectal tenesmus, lower urinary tract symptoms and a previous episode of acute retention of urine. Computed tomography (CT) and magnetic resonance imaging (MRI) scan of abdomen showed a multiloculated, cystic formation of 12 cm in the pelvic cavity to the left, with compression of the prostate, bladder, sigmoid and rectum, and its extension imprinted the back of the pubis and back bladder. Saturation prostate biopsy was negative for carcinoma. The histology of transurethral resection of bladder formation revealed flogistic tissue...
June 8, 2016: Urologia
V D Parshin, I M Koroleva, M A Mishchenko
AIM: To analyze the role of ray functional computerized diagnostic technologies in assessment of the state of tracheal wall in cicatricial stenosis. MATERIAL AND METHODS: We examined 45 patients with cicatricial tracheal stenosis during August 2013 -- March 2015. Fibrobronchoscopy, multislice computerized tomography, magnetic resonance imaging and lungs function examination were performed. For the first time dynamic (functional) CT and MRI were included in research algorithm...
2016: Khirurgiia
Galip Ersoz, Fatih Tekin, Halil Bozkaya, Mustafa Parildar, Ilker Turan, Zeki Karasu, Omer Ozutemiz, Oktay Tekesin
BACKGROUND AND STUDY AIM: We present the use of the magnetic compression anastomosis (MCA) technique for treatment of disconnected bile duct after living-donor related liver transplantation (LDLT) using the recently introduced through-the-scope magnet. PATIENTS AND METHODS: The MCA technique was used in patients with disconnected bile duct who could not be treated with either percutaneous or endoscopic procedures. All patients already had a percutaneous external biliary drainage catheter before the procedure...
July 2016: Endoscopy
Parakkal Deepak, Amy B Kolbe, Jeff L Fidler, Joel G Fletcher, John M Knudsen, David H Bruining
Magnetic resonance enterography (MRE) and abdominal ultrasound are integral parts of multimodality assessments for patients with inflammatory bowel disease. Applications include assessing Crohn's disease (CD) extent and severity, differentiating CD from ulcerative colitis, detecting CD complications, evaluating response to therapy, and demonstrating postoperative recurrence. Magnetic resonance imaging protocols are being developed that may reduce or eliminate the need for intravenous contrast agents and better differentiate inflammatory from fibrotic strictures...
April 2016: Gastroenterology & Hepatology
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