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"Abdominal wall"

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https://www.readbyqxmd.com/read/28544261/mechanical-properties-structure-bioadhesion-and-biocompatibility-of-pectin-hydrogels
#1
Pavel A Markov, Nikita S Krachkovsky, Eugene A Durnev, Ekaterina A Martinson, Sergey G Litvinets, Sergey V Popov
The surface structure, biocompatibility, textural and adhesive properties of calcium hydrogels derived from 1, 2 and 4% solutions of apple pectin were examined in this study. An increase in the pectin concentration in hydrogels was shown to improve their stability toward elastic and plastic deformation. The elasticity of pectin hydrogels, measured as Young's modulus, ranged from 6 to 100 kPa. The mechanical properties of the pectin hydrogels were shown to correspond to those of soft tissues. The characterization of surface roughness in terms of the roughness profile (Ra) and the root-mean-square deviation of the roughness profile (Rq) indicated an increased roughness profile for hydrogels depending on their pectin concentration...
May 22, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28541865/multipoint-suture-fixation-technique-for-abdominal-wall-reconstruction-with-component-separation-and-onlay-biological-mesh-placement
#2
Brad Denney, Jorge I de la Torre
Component separation with mesh reinforcement has become the primary modality for complex abdominal wall reconstruction. However, many fundamental questions remain unanswered, such as whether underlay versus overlay mesh placement is superior, and what is the best means of suture fixation technique for mesh placement? This study presents the senior author's technique for onlay biologic mesh placement with multipoint suture fixation in combination with component separation and its subsequent low recurrence rates...
May 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28541191/fast-numerical-simulation-of-focused-ultrasound-treatments-during-respiratory-motion-with-discontinuous-motion-boundaries
#3
Michael Schwenke, Joachim Georgii, Tobias Preusser
OBJECTIVE: Focused ultrasound (FUS) is rapidly gaining clinical acceptance for several target tissues in the human body. Yet, treating liver targets is not clinically applied due to a high complexity of the procedure (noninvasiveness, target motion, complex anatomy, blood cooling effects, shielding by ribs, and limited image-based monitoring). To reduce the complexity, numerical FUS simulations can be utilized for both treatment planning and execution. These use-cases demand highly accurate and computationally efficient simulations...
May 23, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28540824/establishment-of-a-scoring-system-for-predicting-the-difficulty-level-of-high-intensity-focussed-ultrasound-ablation-of-uterine-fibroids
#4
Zhongqiong Liu, Chunmei Gong, Yunchang Liu, Lian Zhang
PURPOSE: To establish a scoring system that predicts the difficulty level of high-intensity focussed ultrasound (HIFU) ablation of uterine fibroids. MATERIALS AND METHODS: Four hundred and twenty-two patients with fibroids were enrolled. The energy efficiency factor (EEF) and sonication time were set as dependent variables, with factors possibly affecting EEF and sonication time including age, body mass index (BMI), the volume of fibroids, the location of the uterus, the type of fibroids, the signal intensity on the T2-weighted imaging (T2WI), the enhancement type, the thickness of the rectus abdominis and the subcutaneous fat layer, the distance from the anterior/posterior surface of the fibroid to the skin, and the abdominal wall scars were set as predictors for building optimal scaling regression models...
May 19, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28539259/congenital-anomalies-in-tunisia-frequency-and-risk-factors
#5
Meriem Aloui, Kaouther Nasri, Abdel Majid Ben Hamida, Raja Marrakchi, Soumeya Siala Gaïgi
BACKGROUND: Despite the high risk of recurrence of congenital malformations, there are no well-accepted preventive measures in developing countries like Tunisia. It is recommended that thorough epidemiological studies of congenital anomalies in this country are needed. The aim of this study is to assess the frequency and types of congenital anomalies in Tunisia and research some risk factors associated with occurrence of these anomalies. METHODS: In this retrospective study, all the fetuses who were autopsied during 21 years period from February 1991 to December 2011 (N=9678) at service of embryofetopathology in the Center of Maternity and Neonatology of Tunis (CMNT) were studied...
May 21, 2017: J Gynecol Obstet Hum Reprod
https://www.readbyqxmd.com/read/28538578/total-abdominal-wall-transplantation-an-anatomical-study-and-classification-system
#6
David Light, Neilendu Kundu, Risal Djohan, Cristiano Quintini, Namita Gandhi, Brian R Gastman, Richard Drake, Maria Siemionow, James E Zins
BACKGROUND: Candidates for multivisceral transplantation present with complex defects often beyond traditional reconstructive options. In this study, the authors describe a dissection technique for a total abdominal wall vascularized composite flap. In addition, the authors suggest a classification system for complex abdominal wall defects. METHODS: Forty fresh, cadaveric hemiabdomens were dissected, with care taken to preserve the iliofemoral, deep circumflex iliac, superficial circumflex iliac, deep inferior epigastric, and superficial inferior epigastric arteries and corresponding veins...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28537779/simulation-model-for-laparoscopic-foregut-surgery-the-university-of-north-carolina-foregut-model
#7
Francisco Schlottmann, Neal S Murty, Marco G Patti
BACKGROUND: A significant gap presently exists between box-lap and virtual-reality simulators and live surgery. Live animal and cadaver use has significant downsides. We have developed a high fidelity, real tissue simulator that allows training in laparoscopic foregut operations. METHODS: Our foregut surgery model is based on porcine tissue blocks that include lungs, heart, aorta, esophagus, diaphragm, stomach, duodenum, liver, and spleen. The tissue block is mounted in a human mannequin and perfused with artificial blood...
May 24, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28536342/-a-case-of-late-recurrence-of-breast-cancer-causing-multiple-organ-metastases-27-years-postoperatively
#8
Kimiyasu Yoneyama, Hiroshi Nakamura, Naotaka Tobe
The patient was a 77-year-old female with a history of treatment for cancer of the right breast 27 years earlier, who presented with a chief complaint of a subcutaneous mass in the left lower quadrant of her abdomen. A thorough examination revealed high breast cancer-related tumor marker values, and based on a computed tomography(CT)examination, a tentative diagnosis of multiple lung, liver, retroperitoneal, and abdominal wall metastases was made. Although there were multiple organ metastases, in view of the long interval before the recurrence, absence of any symptoms, and the patient's age, we initiated treatment by weekly administration of an aromatase inhibitor and trastuzumab...
May 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28536234/actinomycosis-presenting-as-an-anterior-abdominal-mass-after-laparoscopic-cholecystectomy
#9
Zainab Alhumoud, Amro Salem
Abdominal actinomycosis is a rare disease caused by different anaerobic Actinomyces species. We report the case of a 55-year-old woman who presented with a painless, slow growing, left upper abdominal mass that developed after a laparoscopic cholecystectomy. A CT scan and MRI of the abdomen revealed a desmoid tumour of the left rectus abdominis muscle.Surgical excision was performed with an uneventful postoperative course. The histological analysis of the specimen was inconsistent with a desmoid tumour and revealed an infection of Actinomyces israelii in the anterior abdominal wall that was confirmed with a microbiology culture...
May 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28534258/closed-incision-prophylactic-negative-pressure-wound-therapy-in-patients-undergoing-major-complex-abdominal-wall-repair
#10
F E E de Vries, J J Atema, O Lapid, M C Obdeijn, M A Boermeester
PURPOSE: To evaluate if incisional prophylactic negative pressure wound therapy (pNPWT) reduces wound infections and other wound complications in high-risk patients undergoing major complex ventral abdominal wall repair. METHODS: Retrospective before-after comparison nested in a consecutive series of patients undergoing elective major complex abdominal wall repair. Starting January 2014, pNPWT was applied on the closed incisional wound for a minimum of 5 days. To minimize selection bias, we compared two periods of 14 months before and after January 2014...
May 23, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/28532913/the-subcostal-nerve-during-lateral-approaches-to-the-lumbar-spine-anatomic-study-with-relevance-for-injury-avoidance-and-postoperative-complications-such-as-abdominal-wall-hernia
#11
Fernando Alonso, Rachel Graham, Tarush Rustagi, Doniel Drazin, Marios Loukas, Rod J Oskouian, Jens R Chapman, R Shane Tubbs
INTRODUCTION: Lateral approaches to the spine have gained popularity. However, details of the innervation pattern of the abdominal oblique muscles with the initial dissection have not been well-studied. METHODS: Ten adult fresh-frozen cadavers (20 sides) were placed in the lateral position. On each side, the region where transpsoas approaches are performed, between the iliac crest and 12th rib, was dissected. The nerves, their course and muscular supply were studied...
May 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28530629/-laparoendoscopic-single-site-less-ureteral-reimplantation
#12
Pedro M Cabrera Castillo, Felipe Cáceres Jiménez
OBJECTIVE: To present in detail our surgical technique and to show our initial experience with ureteral reimplantation using the transumbilical LESS approach to treat patients with ureteral stenosis secondary to various diseases and surgical complications. METHODS: We performed 7 ureteral reimplantations from February 2012, using the multichannel Richard- Wolf (KeyPort) platform placed transumbilical by a small 2-2,5 cm transversal incision. We always use a 3.5 mm minilaparoscopy accessory trocar in the right iliac fossa, that is crucial to perform the laparoscopic suturing safely for the patient and in an optimal time...
May 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28528910/the-management-of-soft-tissue-tumours-of-the-abdominal-wall
#13
REVIEW
H G Smith, D Tzanis, C Messiou, C Benson, J A van der Hage, M Fiore, S Bonvalot, A J Hayes
BACKGROUND: Soft tissue tumours of the abdominal wall account for approximately 10% of all soft tissue tumours. Tumours at this site comprise a heterogeneous group of pathologies with distinct clinical behaviours and responses to treatment. The management of these tumours has largely been extrapolated from studies of soft tissue tumours at other sites. This review aims to summarise the existing data relating to abdominal wall tumours and suggest principles for managing soft tissue tumours at this site...
May 6, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28527648/a-case-of-amebiasis-with-negative-serologic-markers-that-caused-intra-abdominal-abscess
#14
Rie Tanaka, Norihiro Furusyo, Rinne Takeda, Sho Yamasaki, Akira Kusaga, Eiichi Ogawa, Masayuki Murata, Ryota Nakanishi, Yoshihiko Maehara
A 23-year-old Japanese woman presented with abdominal distention following fever, diarrhea, and abdominal pain during a stay in Taiwan. Serology for the detection of amebic-antibodies and stool microscopic examination were both negative. A computed tomography scan showed a 13 cm diameter abscess spreading from the lower abdominal wall to the pelvic retroperitoneal space. Needle aspiration of the abscess was done under computed tomography guidance, and microscopy of the aspirated fluid revealed trophozoites of Entamoeba...
May 17, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28526657/risk-adjusted-adverse-outcomes-in-complex-abdominal-wall-hernia-repair-with-biologic-mesh-a-case-series-of-140-patients
#15
Rifat Latifi, David Samson, Ansab Haider, Asad Azim, Hajira Iftikhar, Bellal Joseph, Elizabeth Tilley, Jorge Con, Saranda Gashi, Ayman El-Menyar
INTRODUCTION: Biologic mesh is preferred for repair of complex abdominal wall hernias (CAWHs) in patients at high risk of wound infection. We aimed to identify predictors of adverse outcomes after complex abdominal wall hernia repair (CAWR) using biologic mesh with different placement techniques and under different surgical settings. METHODS: A retrospective case series study was conducted on all patients who underwent CAWR with biologic mesh between 2010 and 2015 at a tertiary medical center...
May 16, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28524374/possible-role-of-the-myelinated-neural-network-in-the-parietal-peritoneum-in-rats-as-a-mechanoreceptor
#16
Koichi Tanaka, Sachi Kuwahara-Otani, Seishi Maeda, Yusuke Minato, Hideshi Yagi
A network of myelinated nerve fibers in the peritoneum covers the abdominal wall. We studied the topographic distribution of this network, explored the fibers' destination in the central nervous system, and examined the markers in these fibers in order to identify the nature of the sensation conveyed by the network of nerve fibers in rats. We used Sihler's method, which stains myelinated fibers in whole mount materials, and observed a dense nerve network and endings toward the peritoneal cavity in the peritoneum that covers the abdomen's lateral bulge...
May 19, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28516203/-erratum-to-surgical-anatomy-of-the-abdominal-wall
#17
A Hellinger, I Roth, F C Biber, M Frenken, S Witzleb, B J Lammers
No abstract text is available yet for this article.
May 17, 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/28515919/programmed-death-ligand-1-expression-is-associated-with-fibrosarcomatous-transformation-of-dermatofibrosarcoma-protuberans
#18
Kenji Tsuchihashi, Hitoshi Kusaba, Yuichi Yamada, Yuta Okumura, Hozumi Shimokawa, Masato Komoda, Keita Uchino, Tomoyasu Yoshihiro, Nobuhiro Tsuruta, Fumiyasu Hanamura, Kyoko Inadomi, Mamoru Ito, Kosuke Sagara, Michitaka Nakano, Kenta Nio, Shuji Arita, Hiroshi Ariyama, Kenichi Kohashi, Ryuji Tominaga, Yoshinao Oda, Koichi Akashi, Eishi Baba
Dermatofibrosarcoma protuberans (DFSP) is a locally invading tumor, characterized by the presence of the collagen type I α 1 (COL1A1)-platelet-derived growth factor (PDGF) β fusion gene. We herein report the case of a 31-year-old man with a history of resection of an abdominal wall DFSP. The patient presented with chest pain and a computed tomography scan revealed a large mass in the posterior mediastinum and another mass in the right lung. The mediastinal mass was a sarcomatous lesion expressing the COL1A1-PDGFβ fusion gene, suggesting that it represented a metastasis of the DFSP following fibrosarcomatous (FS) transformation...
May 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28512414/an-intra-abdominal-desmoid-tumor-embedded-in-the-pancreas-preoperatively-diagnosed-as-an-extragastric-growing-gastrointestinal-stromal-tumor
#19
Mari Mizuno, Yoshiaki Kawaguchi, Aya Kawanishi, Yohei Kawashima, Atsuko Maruno, Masami Ogawa, Mifuji Tomioku, Daisuke Furukawa, Kazuhito Nabeshima, Kenji Nakamura, Kenichi Hirabayashi, Tetsuya Mine
A 45-year-old woman was found to have a pancreatic tumor by abdominal ultrasound performed for a medical check-up. Abdominal contrast-enhanced computed tomography showed a hypovascular tumor measuring 30 mm in diameter in the pancreatic tail. Endoscopic ultrasound-guided fine needle aspiration was performed. An extragastric growing gastrointestinal stromal tumor was thereby diagnosed preoperatively, and surgical resection was planned. Laparoscopic surgery was attempted but conversion to open surgery was necessitated by extensive adhesions, and distal pancreatectomy, splenectomy, and partial gastrectomy were performed...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28512101/novel-use-of-combination-of-electromyography-and-ultrasound-to-guide-quadratus-lumborum-block-after-open-appendicectomy
#20
Cormac F Mullins, Conor O'Brien, Therese C O'Connor
The quadratus lumborum (QL) block facilitates the administration of anaesthesia to the anterior abdominal wall. The use of ultrasound (US) improves the accuracy of the QL block and reduces the risk of adverse events. Electromyography (EMG) in combination with US for muscle plane blocks has not been described previously. We postulated that the addition of EMG-guided needle positioning might assist the execution of this block. This case report describes the first use of combined needle EMG and US to carry out a QL block performed for postoperative analgesia following an open appendicectomy...
May 15, 2017: BMJ Case Reports
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