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Anastomoses

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https://www.readbyqxmd.com/read/28812648/fungus-like-mycelial-fossils-in-2-4-billion-year-old-vesicular-basalt
#1
Stefan Bengtson, Birger Rasmussen, Magnus Ivarsson, Janet Muhling, Curt Broman, Federica Marone, Marco Stampanoni, Andrey Bekker
Fungi have recently been found to comprise a significant part of the deep biosphere in oceanic sediments and crustal rocks. Fossils occupying fractures and pores in Phanerozoic volcanics indicate that this habitat is at least 400 million years old, but its origin may be considerably older. A 2.4-billion-year-old basalt from the Palaeoproterozoic Ongeluk Formation in South Africa contains filamentous fossils in vesicles and fractures. The filaments form mycelium-like structures growing from a basal film attached to the internal rock surfaces...
April 24, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812257/robotic-assisted-microvascular-surgery-skill-acquisition-in-a-rat-model
#2
Nicholas S Clarke, Johnathan Price, Travis Boyd, Stefano Salizzoni, Kenton J Zehr, Alejandro Nieponice, Pietro Bajona
Microsurgery is a technically demanding field with long learning curves. Robotic-assisted microsurgery has the ability to decrease these learning curves. We, therefore, sought to assess the feasibility of robotic-assisted microvascular surgery in a rat model, and whether this could be translated into a worthwhile skills acquisition exercise for residents. Twenty-eight rats underwent microvascular anastomosis. Procedures were performed by a trained microvascular surgeon with no robotic experience (n = 14), or a trained robotic surgeon with no microvascular experience (n = 14)...
August 10, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28812136/clinical-outcomes-of-y90-radioembolization-for-recurrent-hepatocellular-carcinoma-following-curative-resection
#3
Rehan Ali, Ahsun Riaz, Ahmed Gabr, Nadine Abouchaleh, Ronald Mora, Ali Al Asadi, Juan Carlos Caicedo, Michael Abecassis, Nitin Katariya, Haripriya Maddur, Laura Kulik, Robert J Lewandowski, Riad Salem
PURPOSE: To assess safety/efficacy of yttrium-90 radioembolization (Y90) in patients with recurrent hepatocellular carcinoma (HCC) following curative surgical resection. METHODS: With IRB approval, we searched our prospectively acquired database for patients that were treated with Y90 for recurrent disease following resection. Baseline characteristics and bilirubin toxicities following Y90 were evaluated. Intention-to-treat overall survival (OS) and time-to-progression (TTP) from Y90 were assessed...
August 15, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28810922/pleural-epithelioid-angiosarcoma-with-lymphatic-differentiation-arisen-after-radiometabolic-therapy-for-thyroid-carcinoma-immunohistochemical-findings-and-review-of-the-literature
#4
REVIEW
Daniela Cabibi, Giulia Pipitone, Rossana Porcasi, Sabrina Ingrao, Ignazio Benza, Calogero Porrello, Massimo Cajozzo, Antonino Giulio Giannone
BACKGROUND: Pleural angiosarcoma is a rare tumor that causes diffuse pleural thickening and effusion, mimicking mesothelioma. Immunohistochemistry is needed to highlight endothelial differentiation. We describe the first case of pleural angiosarcoma with lymphatic differentiation following radiometabolic therapy for thyroid carcinoma. CASE PRESENTATION: A 50-year-old man showed diffuse pleural thickening and effusion. Nine years earlier, he underwent thyroidectomy and radiometabolic therapy for thyroid carcinoma with lymph node metastases...
August 15, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28810506/controls-on-anastomosis-in-lowland-river-systems-towards-process-based-solutions-to-habitat-conservation
#5
Paweł Marcinkowski, Robert C Grabowski, Tomasz Okruszko
Anastomosing rivers were historically common around the world before extensive agricultural and industrial development in river valleys. Few lowland anastomosing rivers remain in temperate zones, and the protection of these river-floodplain systems is an international conservation priority. However, the mechanisms that drive the creation and maintenance of multiple channels, i.e. anabranches, are not well understood, particularly for lowland rivers, making it challenging to identify effective management strategies...
August 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28809096/pancreatico-jejunostomy-decreases-post-operative-pancreatic-fistula-incidence-and-severity-after-central-pancreatectomy
#6
Frédéric Borel, Mehdi Ouaissi, Aude Merdrignac, Aurelien Venara, Valéria De Franco, Laurent Sulpice, Antoine Hamy, Nicolas Regenet
BACKGROUNDS: Central pancreatectomy (CP) is an alternative to pancreaticoduodenectomy and distal pancreatectomy in benign tumours of pancreatic isthmus management. It is known for a high post-operative pancreatic fistula (POPF) rate. The purpose of this study was to compare POPF incidence between pancreatico-jejunostomy (PJ) and pancreatico-gastrostomy (PG). METHODS: Fifty-eight patients (mean age 53.9 ± 1.9 years) who underwent a CP in four French University Hospitals from 1988 to 2011 were analysed...
August 15, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28808913/modified-double-barrelled-wet-colostomy-after-total-pelvic-exenteration
#7
Antonio Macrì
Pelvic exenteration is a radical surgery that can require urinary and faecal diversions. Double-barreled wet colostomy, a viable alternative to the traditional ileal conduit with separate colostomy technique, is not always applicable due to the shortness of an ureter. To overcome this problem, I modified the original technique, replacing the two uretero-colic anastomoses with an ureteroureterostomy and an uretero-colic anastomosis.
August 14, 2017: Updates in Surgery
https://www.readbyqxmd.com/read/28808574/anastomosing-haemangioma-of-liver-a-case-report
#8
Xiuhua Peng, Jin Li, Zonghui Liang
Anastomosing haemangioma (AH) is a recently described, unusual variant of capillary hemangioma that appears to be unique to the genitourinary system, with a particular proclivity for the kidney. AH is a subtype of capillary haemangioma, which is rarely encountered in clinical practice, particularly in the liver. We herein present the case of a 57-year-old woman with an incidental finding on magnetic resonance imaging of a local lesion in the liver, sized 3.3×3.0 cm. The patient underwent hepatectomy with a good postoperative recovery...
September 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28802984/free-grafts-and-microvascular-anastomoses
#9
REVIEW
Valery F Scharf
Skin grafts and free skin flaps are useful options for closure of wounds in which primary closure or use of traditional skin flaps is not feasible. Grafts are classified by their morphology and host-donor relationship. Free skin flaps with microvascular anastomoses are developed from previously described axial pattern flaps and have the added advantage of reestablishing robust vascular supply to the flap, but require specialized equipment and a high degree of technical expertise. Despite intensive perioperative care and the risk of graft or flap failure, skin grafts and free skin flaps can serve as rewarding methods of closing difficult wounds...
August 9, 2017: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/28800992/new-approaches-to-airway-management-in-tracheal-resections-a-systematic-review-and-meta-analysis
#10
Mark Schieren, Andreas Böhmer, Fabian Dusse, Aris Koryllos, Frank Wappler, Jerome Defosse
OBJECTIVES: Although endotracheal intubation, surgical crossfield intubation, and jet ventilation are standard techniques for airway management in tracheal resections, there are also reports of new approaches, ranging from regional anesthesia to extracorporeal support. The objective was to outline the entire spectrum of new airway techniques. DESIGN: The literature databases PubMed/Medline and the Cochrane Library were searched systematically for prospective and retrospective trials as well as case reports on tracheal resections...
August 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28790215/-a-case-of-ruptured-distal-anterior-choroidal-artery-aneurysm-associated-with-a-twig-like-middle-cerebral-artery-treated-with-single-stage-aneurysm-clipping-and-sta-mca-double-anastomoses-in-the-acute-phase
#11
Toshimoto Seno, Kanehisa Kohno, Hideo Tanaka, Shinji Iwata, Shinya Fukumoto, Haruhisa Ichikawa, Noriyuki Fumoto, Akihiro Inoue, Saya Ozaki, Yawara Nakamura, Shohei Kohno, Shiro Ohue
We report the case of a patient who has progressed well over 5 years following single-stage aneurysm clipping and superficial temporal artery-middle cerebral artery(STA-MCA)double anastomoses in the acute phase, for a ruptured distal anterior choroidal artery(AChA)aneurysm accompanied by a twig-like MCA. The patient was a 49-year-old female who developed a sudden severe headache and disturbance of consciousness due to subarachnoid hemorrhage and intraventricular hemorrhage(IVH). Cerebral angiography showed a right twig-like MCA associated with an abnormal vascular network and a ruptured aneurysm in the distal AChA...
August 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28783156/hydrogels-with-precisely-controlled-integrin-activation-dictate-vascular-patterning-and%C3%A2-permeability
#12
Shuoran Li, Lina R Nih, Haylee Bachman, Peng Fei, Yilei Li, Eunwoo Nam, Robert Dimatteo, S Thomas Carmichael, Thomas H Barker, Tatiana Segura
Integrin binding to bioengineered hydrogel scaffolds is essential for tissue regrowth and regeneration, yet not all integrin binding can lead to tissue repair. Here, we show that through engineering hydrogel materials to promote α3/α5β1 integrin binding, we can promote the formation of a space-filling and mature vasculature compared with hydrogel materials that promote αvβ3 integrin binding. In vitro, α3/α5β1 scaffolds promoted endothelial cells to sprout and branch, forming organized extensive networks that eventually reached and anastomosed with neighbouring branches...
August 7, 2017: Nature Materials
https://www.readbyqxmd.com/read/28777747/breast-fibroadenoma-with-pseudoangiomatous-pash-like-stroma
#13
Josko Bezic, Jelena Srbljin
Pseudoangiomatous stromal hyperplasia (PASH) is a breast stromal change, histologically characterized by anastomosing, slit-like spaces lined by slender myofibroblasts and surrounded by dense collagenous stroma. Mass forming cases clinically and radiologically simulate fibroadenoma. A middle aged women presented with unpalpable breast nodule discovered on ultrasound examination. The ultrasound characteristics were typical for fibroadenoma, while fine-needle aspiration cytology was inconclusive. The histological examination of the lumpectomy specimen showed fibroadenoma with peculiar stromal alteration consistent with pseudoangiomatous stromal hyperplasia...
August 2, 2017: Breast Disease
https://www.readbyqxmd.com/read/28775077/chronic-rejection-of-cardiac-allografts-is-associated-with-increased-lymphatic-flow-and-cellular-trafficking
#14
Lindsey A Edwards, Anna K Nowocin, Nazila V Jafari, Lucy Meader, Kathryn Brown, Aurélien Sarde, Carolyn Lam, Alex Murray, Wilson Wong
Background -Cardiac transplantation is an excellent treatment for end-stage heart disease. However, rejection of the donor graft, particularly by chronic rejection leading to cardiac allograft vasculopathy, remains a major cause of graft loss. The lymphatic system plays a crucial role in the alloimmune response, facilitating trafficking of antigen presenting cells (APCs) to draining lymph nodes (dLN). The encounter of APCs with T lymphocytes in secondary lymphoid organs is essential for the initiation of alloimmunity...
August 3, 2017: Circulation
https://www.readbyqxmd.com/read/28770161/tumor-resection-from-retromolar-trigone-posterolateral-maxilla-and-anterior-mandibular-ramus-using-lower-cheek-flap-approach-a-case-report-and-review-of-literature
#15
Young-Hoon Kang, June-Ho Byun, Su-Jin Sung, Bong-Wook Park
A surgical approach involving the retromolar trigone, posterolateral maxilla, and pterygoid region is the most challenging in the field of maxillofacial surgery. The upper cheek flap (Weber-Ferguson incision) with subciliary extension and the maxillary swing approach have been considered as alternatives; however, neither approach provides sufficient exposure of the pterygoid region and the anterior portion of the mandibular ramus. In this report, we describe two cases in which a lower cheek flap approach was used for complete tumor resection in the retromolar trigone and the anterior mandibular ramus...
June 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28770109/ocular-adverse-effects-of-intravitreal-bevacizumab-are-potentiated-by-intermittent-hypoxia-in-a-rat-model-of-oxygen-induced-retinopathy
#16
Jeffrey J Tan, Charles L Cai, Eric M Shrier, Lois McNally, Douglas R Lazzaro, Jacob V Aranda, Kay D Beharry
Intravitreal bevacizumab (Avastin) use in preterm infants with retinopathy of prematurity is associated with severe neurological disabilities, suggesting vascular leakage. We examined the hypothesis that intermittent hypoxia (IH) potentiates intravitreal Avastin leakage. Neonatal rats at birth were exposed to IH from birth (P0)-P14. At P14, the time of eye opening in rats, a single dose of Avastin (0.125 mg) was injected intravitreally into the left eye. Animals were placed in room air (RA) until P23 or P45 for recovery (IHR)...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28768254/intracorporeal-versus-extracorporeal-anastomoses-following-laparoscopic-right-colectomy-in-obese-patients-a-case-matched-study
#17
Andrea Vignali, Ugo Elmore, Maria Lemma, Giovanni Guarnieri, Giovanni Radaelli, Riccardo Rosati
BACKGROUND/AIMS: To compare short- and long-term outcomes of intracorporeal anastomosis (IA) versus extracorporeal anastomosis (EA) in obese (body mass index >30 kg/m2) patients. PATIENTS AND METHODS: Sixty-four consecutive obese patients who underwent laparoscopic (LPS) right colectomy with IA were matched with 64 patients who underwent LPS right colectomy with EA. Intraoperative variables, short-term outcomes, readmission rates, and morbidity and mortality rates were analyzed along with long-term outcomes...
August 3, 2017: Digestive Surgery
https://www.readbyqxmd.com/read/28767176/sequential-chimeric-medial-femoral-condyle-and-anterolateral-thigh-flow-through-flaps-for-one-stage-reconstructions-of-composite-bone-and-soft-tissue-defects-report-of-three-cases
#18
Dominic Henn, Mohamed H Abouarab, Christoph Hirche, Jochen F Hernekamp, Volker J Schmidt, Ulrich Kneser, Thomas Kremer
Small recalcitrant non-unions with poor perfusion require reconstruction with vascularized bone flaps. Cases with concomitant large soft tissue defects are especially challenging, since vascularized soft tissue transfer is often indicated and distant microvascular anastomoses may be required. We introduce a sequential chimeric free flap composed of a medial femoral condyle corticoperiosteal flap anastomosed to an anterolateral thigh flow-through flap (MFC-ALT flap) and report its use for reconstruction of small non-unions with concomitant large soft tissue defects in three exemplary patients...
August 2, 2017: Microsurgery
https://www.readbyqxmd.com/read/28767168/the-possibility-of-free-tissue-transfer-as-a-nutrient-flap-for-critical-ischemic-foot-a-case-report
#19
Kentaro Tanaka, Kimihiro Igari, Mitsuhiro Kishino, Satoshi Usami, Tsutomu Homma, Takahiro Toyofuku, Yoshinori Inoue, Mutsumi Okazaki
Microsurgical procedure of free tissue transfer in critical limb ischemia patients with large ulceration has already been established. The nutrient flap concept was that transferred tissue functioned not only to cover the skin defect but also as a supplementary blood supply to the ischemic lower leg. This report showed the justification for this concept, which was rarely discussed. A 58-year-old male patient with progressive forefoot gangrene caused by arteriosclerosis obliterans was presented. The distal bypass procedure was performed as revascularization surgery, and a latissimus dorsi (LD) myocutaneous flap was transplanted to cover ulceration...
August 2, 2017: Microsurgery
https://www.readbyqxmd.com/read/28766056/-anesthesia-management-in-microsurgical-reconstructions
#20
A Rand, M Ayoub, C H Meyer-Frießem, P K Zahn, M Bauer
Microsurgical procedures for construction of anastomoses present new challenges for anesthetists in the perioperative setting. Despite their increasing importance, so far no perioperative management guidelines for these patients existed. Anesthetists can influence the success of surgery (e. g. successful perfusion of a flap) via an optimal preoperative, intraoperative and postoperative approach. Patients should be carefully evaluated preoperatively for increased risks to avoid poor postoperative outcomes...
August 1, 2017: Der Anaesthesist
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