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Microsurgery

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https://www.readbyqxmd.com/read/28637119/disco-vertebral-osteomyelitis-causing-intradural-spinal-abscess-with-cauda-equina-compression
#1
Anan Shtaya, Samantha Hettige
Intradural extramedullary spinal infections causing cauda equina compression are uncommon. We report an Escherichia coli bacteraemia causing lumbar discitis and an intracanalicular collection compressing the cauda equina: initially thought to be an epidural empyema, however microsurgery revealed an intradural location. Decompression, drainage, antibiotics, and neuropathy treatment are essential management.
March 3, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28634334/image-guided-transplantation-of-single-cells-in-the-bone-marrow-of-live-animals
#2
Raphaël Turcotte, Clemens Alt, Judith M Runnels, Kyoko Ito, Juwell W Wu, Walid Zaher, Luke J Mortensen, Lev Silberstein, Daniel C Côté, Andrew L Kung, Keisuke Ito, Charles P Lin
Transplantation of a single hematopoietic stem cell is an important method for its functional characterization, but the standard transplantation protocol relies on cell homing to the bone marrow after intravenous injection. Here, we present a method to transplant single cells directly into the bone marrow of live mice. We developed an optical platform that integrates a multiphoton microscope with a laser ablation unit for microsurgery and an optical tweezer for cell micromanipulation. These tools allow image-guided single cell transplantation with high spatial control...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28634316/-pre-and-intra-operative-supporting-technology-for-brain-tumors-8-microsurgery-and-endoscopic-surgery-for-deep-seated-brain-tumor
#3
Yoshiki Arakawa
No abstract text is available yet for this article.
June 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28631160/role-of-imaging-in-the-follow-up-of-t2-t3-glottic-cancer-treated-by-transoral-laser-microsurgery
#4
Filippo Marchi, Cesare Piazza, Marco Ravanelli, Giovanna Gaggero, Giampiero Parrinello, Alberto Paderno, Pietro Perotti, Marta Filauro, Roberto Maroldi, Giorgio Peretti
An unblinded retrospective analysis of prospectively collected data was carried out on 138 patients affected by glottic pT2 and selected pT3 squamous cell carcinomas (SCC) treated by transoral laser microsurgery (TLM). The entire cohort was divided into two groups: Group A included 78 "high-risk" patients (pT2 with impaired vocal cord mobility, pT3 for anterior paraglottic and/or pre-epiglottic space invasion, presence of angioembolization, perineural spread, and positive lymph nodes in the neck) who underwent postoperative surveillance by endoscopy and imaging (CT or MR), while Group B included 60 "low-risk" patients (pT2 with absence of the above-mentioned features) who underwent endoscopic follow-up alone...
June 19, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28626100/-neuronavigator-assisted-microsurgical-resection-of-glioma-located-in-cerebral-functional-areas
#5
Guohui Su, Zhixiong Liu, Lei Huo, Chuntao Li, Mingyu Zhang
To evaluate value of neuronavigator-assisted microsurgery of glioma located in cerebral functional areas.
 Methods: Patients with glioma located in cerebral functional areas were underwent operation in Xiangya Hospital. Of 64 patients, 34 patients were performed neuronavigator-assisted microsurgery, and 30 were underwent routine surgical operation.
 Results: The neuronavigator-assisted microsurgery group showed high complete resection rate with low neurological deficit and cerebral edema compared with the routine surgical group (P<0...
May 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28625904/subarachnoid-hemorrhage-due-to-distal-superior-cerebellar-artery-dissection-in-neurofibromatosis-type-1
#6
Yuki Takeshima, Yuki Ohmori, Takashi Nakagawa, Yasuyuki Kaku, Jun-Ichi Kuratsu, Shigetoshi Yano
BACKGROUND: Neurofibromatosis type 1 (NF1) is a rare disease with an incidence of one in every 3000 births. Numerous studies have focused on the main function of NF1 as a tumor suppressor, while few have examined the cerebrovascular abnormalities observed in patients with NF1. It is worth noting that intracranial aneurysms are uncommon in this condition. CASE DESCRIPTION: We report a case of NF1 with a dissection of the distal segment of the superior cerebellar artery...
June 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28624755/stereo-vision-based-tracking-of-soft-tissue-motion-with-application-to-online-ablation-control-in-laser-microsurgery
#7
Andreas Schoob, Dennis Kundrat, Lüder A Kahrs, Tobias Ortmaier
Recent research has revealed that image-based methods can enhance accuracy and safety in laser microsurgery. In this study, non-rigid tracking using surgical stereo imaging and its application to laser ablation is discussed. A recently developed motion estimation framework based on piecewise affine deformation modeling is extended by a mesh refinement step and considering texture information. This compensates for tracking inaccuracies potentially caused by inconsistent feature matches or drift. To facilitate online application of the method, computational load is reduced by concurrent processing and affine-invariant fusion of tracking and refinement results...
June 8, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28619497/long-term-functional-outcome-of-symptomatic-unruptured-intracranial-aneurysms-in-an-interdisciplinary-treatment-concept
#8
M Kunz, F Dorn, T Greve, V Stoecklein, J C Tonn, H Brückmann, Ch Schichor
OBJECTIVE: In symptomatic unruptured intracranial aneurysms (UIA), data on long-term functional outcome are sparse in the literature, even in the light of modern interdisciplinary treatment decisions. We therefore analysed our in-house database for prognostic factors and long-term outcome of neurological symptoms after microsurgical/endovascular treatment. METHODS: Patients treated between 2000 and 2016 after interdisciplinary vascular board decision were included...
June 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28607849/multiuse-of-disposable-microsurgical-instruments-as-a-cost-efficient-alternative-for-training-and-research
#9
Martin Aman, Matthias E Sporer, Otto Riedl, Wei-Te Wang, Anne Kramer, Oskar C Aszmann, Konstantin D Bergmeister
Microsurgery demands significant preclinical training, often hampered by the high costs of the required microsurgery instruments. We hypothesized that recently available disposable microsurgery instruments provide sufficient quality and significantly reduced costs. In a comparative analysis with standard reusable instruments, participants performed equally with both instrument sets and recommended the disposable instruments for microsurgery training and research applications.
May 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28607829/adaptive-hypofractionated-gamma-knife-radiosurgery-in-the-acute-management-of-large-thymic-carcinoma-brain-metastases
#10
Georges Sinclair, Heather Martin, Michael Fagerlund, Amir Samadi, Hamza Benmakhlouf, Ernest Doodo
BACKGROUND: Brain metastases often lead to serious neurological impairment and life threatening states. Their acute management remains complex, particularly in the case of rare malignancies with aggressive evolution. In large single lesions, open surgery followed by radiation to the surgical cavity is widely regarded as the best approach; yet in many cases, microsurgery is not feasible due to the lesion's critical location and/or the number of brain metastases present. We report the effects of adaptive hypofractionated gamma knife radiosurgery in the acute management of critically located thymic carcinoma metastases...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28606597/resident-involvement-in-microsurgery-an-american-college-of-surgeons-national-surgical-quality-improvement-program-analysis
#11
Kevin T Jubbal, Daniel Chang, Shayan A Izaddoost, William Pederson, Dmitry Zavlin, Anthony Echo
OBJECTIVE: In the current healthcare climate, there is increased focus on medical errors, patient outcomes, and the influence of resident participation on these metrics. Other studies have examined the influence of resident involvement on surgical outcomes, but the arena of microsurgery, with added complexity and learning curve, has yet to be investigated. DESIGN: A retrospective analysis of the American College of Surgeons National Surgical Quality Improvement Program database was performed to find patients undergoing procedures with free tissue transfer by screening for Current Procedural Terminology codes...
June 9, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28603623/subinguinal-microsurgical-varicocelectomy-vs-percutaneous-embolization-in-infertile-men-prospective-comparison-of-reproductive-and-functional-outcomes
#12
Elie Bou Nasr, Mouath Binhazzaa, Thierry Almont, Pascal Rischmann, Michel Soulie, Eric Huyghe
BACKGROUND: Varicocele is a condition characterized by dilated, tortuous veins within the pampiniform venous plexus of the scrotal sac. Presence of varicocele is associated with an increased risk of alteration of semen parameters. The objective of this study was to compare the current standard in varicocele treatment procedures: sub-inguinal microscopic ligation to percutaneous embolization in terms of semen parameters improvement, fertility, and morbidity at the university hospital of Toulouse (France)...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28602328/comparison-of-training-effect-on-tremor-using-2-training-modules
#13
Abhishek R Payal, Yonwook J Kim, Luis A Gonzalez Gonzalez, Mary K Daly
PURPOSE: To compare training effect of 2 training models-a surgical simulator anti-tremor module and a paper version-on tremor and time-to-task completion. SETTING: Ophthalmology Department, Veterans Affairs Boston Healthcare System, Jamaica Plain, Massachusetts, USA. DESIGN: Prospective crossover study. METHODS: Trainees completed simulator and paper training modules (baseline test, 3 training sessions, posttraining test, and final test) with their dominant and nondominant hands...
May 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28600594/-minimally-invasive-approaches-for-transanal-surgery
#14
REVIEW
W Kneist
Since the introduction of transanal endoscopic microsurgery (TEM) in the 1980 s, the minimally invasive transanal approach has been a treatment option for selected patients with colorectal diseases. Recently, transanal minimally invasive surgery (TAMIS) was introduced as an alternative technique. TAMIS is a hybrid between TEM and single-port laparoscopy and was followed by introduction of transanal total mesorectal excision (TaTME). Although the TaTME experience remains preliminary, it appears to be an attractive minimally invasive procedure for carefully selected patients with resectable rectal cancer...
June 9, 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/28597519/feasibility-study-on-robot-assisted-retinal-vascular-bypass-surgery-in-an-ex%C3%A2-vivo-porcine-model
#15
Yi Qi Chen, Ji Wei Tao, Liang Li, Jian Bo Mao, Chen Ting Zhu, Ji Meng Lao, Yang Yang, Li-Jun Shen
PURPOSE: To describe a new robot-assisted surgical system for retinal vascular bypass surgery (RVBS) and to compare the success rate with freehand RVBS. METHODS: A robot-assisted system for retinal microsurgery was constructed to include two independent robotic arms. A 23-gauge light probe and an intraocular forceps were affixed to the arm end effectors to perform the intraocular manipulation. Harvested porcine eyes were introduced to be established animal models of closed-sky eyeballs after that pars plana vitrectomy using temporary keratoprosthesis was performed by a skilful surgeon...
June 9, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28595258/microsurgery-for-recurrent-vestibular-schwannoma-after-previous-gross-total-resection
#16
Avital Perry, Christopher S Graffeo, William R Copeland, Matthew L Carlson, Brian A Neff, Colin L Driscoll, Michael J Link
OBJECTIVE: To present a single-institution experience and supportive systematic literature review examining outcomes after repeat microsurgery for recurrent vestibular schwannoma (VS) following previous gross total resection (GTR). STUDY DESIGN: Retrospective review of prospectively maintained VS database. Systematic literature review. SETTING: Tertiary referral center. PATIENTS: Six proven VS recurrences after primary GTR, treated via repeat microsurgery...
July 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28594742/outcomes-of-lymphedema-microsurgery-for-breast-cancer-related-lymphedema-with-or-without-microvascular-breast-reconstruction
#17
Holger Engel, Chia-Yu Lin, Jung-Ju Huang, Ming-Huei Cheng
OBJECTIVE: This study investigated the outcome of lymphedema microsurgery with or without microsurgical breast reconstruction for breast cancer-related lymphedema (BCRL). BACKGROUND: Complete decongestive therapy, lymphovenous anastomosis, and vascularized lymph node flap transfer are the 3 major treatment modalities for BCRL. Releasing axillary contracture and transferring a free flap may potentially improve the BCRL. METHODS: Between 2004 and 2015, 124 patients with BCRL who underwent 3 treatment modalities without or with microsurgical breast reconstruction were included in this study as groups I and II, respectively...
June 7, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28592077/-clinical-effects-of-microsurgery-in-spinal-cord-anaplastic-astrocytoma
#18
L Zhang, W Q Jia, D S Kong, Z F Zhang, J Yang
Objective: To investigate the surgical outcomes and prognosis of spinal cord anaplastic astrocytoma (AA). Methods: A total of 27 consecutive patients diagnosed as spinal cord AA between January 2008 and May 2015 in Department of Neurosurgery of Beijing Tiantan Hospital were retrospectively reviewed. There were 18 males and 9 females, the mean age was (30.7±13.0) years (ranging from 5 to 52 years). The lesions were located at cervical level in 8 patients, at thoracic level in 9 patients, at cervicothoracic level in 3 patients, and at thoracolumbar level in 7 patients, the average number of vertebral was 3...
June 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28591484/safety-and-efficacy-of-gamma-knife-radiosurgery-in-hypothalamic-hamartomas-with-severe-epilepsies-a-prospective-trial-in-48-patients-and-review-of-the-literature
#19
Jean Régis, Medhi Lagmari, Romain Carron, Motohiro Hayashi, Aileen McGonigal, Géraldine Daquin, Nathalie Villeneuve, Virginie Laguitton, Fabrice Bartolomei, Patrick Chauvel
Epilepsies associated with hypothalamic hamartomas (HHs) are frequently drug resistant with severe psychiatric and cognitive comorbidities. We performed a prospective trial to evaluate the safety and efficacy of Gamma Knife radiosurgery (GKS). Between October 1999 and October 2007, a total of 57 patients were investigated, included and treated by GKS in Timone University Hospital. Preoperative workup and 3-year postoperative evaluation consisted of seizure diary, neuropsychological, psychiatric, endocrinologic, visual field, and visual acuity examinations...
June 2017: Epilepsia
https://www.readbyqxmd.com/read/28589294/acromegaly-surgical-results-in-548-patients
#20
REVIEW
Cecilia Fernández Mateos, Maria García-Uria, Tomás Lucas Morante, José García-Uría
PURPOSE: The goal of this study was to quantified the results of microsurgery, in all the patients with acromegaly treated by the same endocrinologist and the same surgeon between 1975 and 2015. METHODS: A series of 548 patients with acromegaly were operated and followed-up from 6 months to 40 years. Patients were selected according to five criteria: (1) Operated by the same surgeon. (2) No previous treatment. (3) Complete endocrinological preoperative studies including GH, OGTT, IGF-I, PRL test and TC/MRI...
June 6, 2017: Pituitary
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