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https://www.readbyqxmd.com/read/30120582/how-accurate-is-preoperative-colonoscopic-localization-of-colonic-neoplasia
#1
Laura M Fernandez, Rowaa N M Ibrahim, Ido Mizrahi, Giovanna DaSilva, Steven D Wexner
INTRODUCTION: Preoperative colonoscopic localization for resection of colonic neoplasia, with or without tattooing for guidance, has been extensively used with variable accuracy. Difficulty in intraoperative identification of the lesion may lead to resection of an incorrect segment or to a more extensive resection than originally planned. The aim of this study was to evaluate the accuracy of preoperative colonoscopy in determining the site of the lesion. METHODS: A prospectively collected IRB-approved institutional database was retrospectively queried for all consecutive patients who underwent an elective colon resection for neoplasia between 2013 and 2016...
August 17, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/30118533/a-randomized-controlled-clinical-trial-comparing-conventional-and-computer-assisted-implant-planning-and-placement-in-partially-edentulous-patients-part-1-clinician-related-outcome-measures
#2
David Schneider, Manuel Sancho-Puchades, Goran I Benic, Christoph Hf Hämmerle, Ronald E Jung
The objectives of this study were to compare conventional and computer-assisted implant planning and placement (CAIPP) protocols regarding surgical planning predictability, intraoperative complications, and patient-centered outcomes. Partially edentulous patients (N = 73) were randomly allocated to one of three treatment groups: control (C, n = 26), with preoperative planning based on conventional radiography and freehand implant placement; and test 1 (T1, n = 24) and test 2 (T2, n = 23), with two different CAIPP protocols...
2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/30116406/micrornas-as-urinary-biomarker-for-oncocytoma
#3
Melanie von Brandenstein, Monika Schlosser, Jan Herden, Axel Heidenreich, Stefan Störkel, Jochen W U Fries
The identification of benign renal oncocytoma, its differentiation from malignant renal tumors, and their eosinophilic variants are a continuous challenge, influencing preoperative planning and being an unnecessary stress factor for patients. Regressive changes enhance the diagnostic dilemma, making evaluations by frozen sections or by immunohistology (on biopsies) unreliable. MicroRNAs (miRs) have been proposed as novel biomarkers to differentiate renal tumor subtypes. However, their value as a diagnostic biomarker of oncocytoma in urines based on mechanisms known in oncocytomas has not been exploited...
2018: Disease Markers
https://www.readbyqxmd.com/read/30116024/a-prospective-phase-ii-study-of-pre-operative-chemotherapy-then-short-course-radiotherapy-for-high-risk-rectal-cancer-copernicus
#4
Simon Gollins, Nicholas West, David Sebag-Montefiore, Shabbir Susnerwala, Stephen Falk, Nick Brown, Mark Saunders, Philip Quirke, Ruby Ray, Philip Parsons, Gareth Griffiths, Tim Maughan, Richard Adams, Chris Hurt
BACKGROUND: Neoadjuvant chemotherapy (NAC) allows earlier treatment of rectal cancer micro-metastases but is not standard of care. There are currently no biomarkers predicting long-term progression-free survival (PFS) benefit from NAC. PATIENTS AND METHODS: In this single arm phase II trial, patients with non-metastatic magnetic resonance imaging (MRI)-defined operable rectal adenocarcinoma at high risk of post-operative metastatic recurrence, received 8 weeks of oxaliplatin/fluorouracil NAC then short-course preoperative radiotherapy (SCPRT) before immediate surgery...
August 15, 2018: British Journal of Cancer
https://www.readbyqxmd.com/read/30115476/accuracy-of-computer-assisted-surgery-in-mandibular-reconstruction-a-systematic-review
#5
REVIEW
Gustaaf J C van Baar, Tymour Forouzanfar, Niels P T J Liberton, Henri A H Winters, Frank K J Leusink
Computer-assisted surgery (CAS) for mandibular reconstruction was developed to improve conventional treatment methods. In the past years, many different software programs have entered the market, offering numerous approaches for preoperative planning and postoperative evaluation of the CAS process of mandibular reconstruction. In this systematic review, we reviewed planning and evaluation methods in studies that quantitatively assessed accuracy of mandibular reconstruction performed with CAS. We included 42 studies describing 413 mandibular reconstructions planned and evaluated using CAS...
September 2018: Oral Oncology
https://www.readbyqxmd.com/read/30114717/preoperative-assessment-of-coronary-arteries-by-cardiac-computed-tomography-in-patients-with-lung-cancer
#6
Fan Zhang, Jing Chen, Zhi-Gang Yang, Han Liu
BACKGROUND:  To retrospectively evaluate characteristics of coronary artery disease (CAD) in patients undergoing lung resection for cancer by using dual-source computed tomography (DSCT), thus increasing our understanding of perioperative evaluation. METHODS:  DSCT coronary angiography was performed for perioperative evaluation in 145 patients with non-small cell lung cancer (NSCLC) due to suspected CAD. The imaging characteristics of CAD including extent, distribution and types of plaques, and luminal stenosis and congenial anomalous including origin of coronary arteries and myocardial bridge (MB) were evaluated and compared by sex, smoking behavior, and pathological types...
August 16, 2018: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/30114316/mr-lymphography-in-patients-with-upper-limb-lymphedema-the-gps-for-feasibility-and-surgical-planning-for-lympho-venous-bypass
#7
Assaf A Zeltzer, Carola Brussaard, Merel Koning, Randy De Baerdemaeker, Benoit Hendrickx, Moustapha Hamdi, Johan de Mey
BACKGROUND AND OBJECTIVES: Lymphedema is caused by insufficient lymphatic drainage leading to abnormal accumulation of interstitial fluid within soft tissues. Lympho-venous anastomosis (LVA), as a surgical option for selected patients, is widely applied. Through preoperative localization of functional lymphatics with indocyanine green, real time visualization of functioning lymphatic vessels is possible. This examination is time consuming and operator dependant and is not suitable to differentiate the ratio of fat hypertrophy to liquid edema...
August 16, 2018: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/30112739/does-the-robotic-arm-and-preoperative-ct-planning-help-with-3d-intraoperative-total-knee-arthroplasty-planning
#8
Robert C Marchand, Nipun Sodhi, Manoshi Bhowmik-Stoker, Laura Scholl, Caitlin Condrey, Anton Khlopas, Assem A Sultan, Jared M Newman, Michael A Mont
Although several studies highlight the advantages of robotic arm-assisted total knee arthroplasty (RA-TKA), few investigate its intraoperative outcome. Therefore, the purpose of this study was to analyze the RA-TKA's ability to assist with intraoperative correction of: (1) flexion and (2) extension gaps, as well as its ability to (3) accurately predict implant sizes. Additionally, in this RA-TKA cohort, length of stay, complications, and readmissions were assessed. A total of 335 patients who underwent RA-TKA were included...
August 15, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/30112502/postoperative-positional-and-dimensional-changes-of-mandibular-canal-after-bilateral-sagittal-split-set-back-osteotomy
#9
Duygu İşcan, Melih Motro, Ahu Acar
Objective: This preliminary study was planned to provide information about preoperative mandibular canal (MC) position and the postoperative positional changes of MC and length in three dimensions, with the purpose of providing some assistance in reducing inferior alveolar neurosensory disturbance (IAND). Methods: MC was examined on CBCT data using SimPlant Pro Standalone 13.0. MC locations were measured in all dimensions, with respect to mandibular bony borders...
December 2017: Turkish journal of orthodontics
https://www.readbyqxmd.com/read/30109429/do-3d-calculated-volume-distribution-of-a-stone-in-pelvicalyceal-system-affect-complications-of-percutaneous-nephrolithotomy
#10
Sait Özbir, Hasan Anıl Atalay, Halil Lütfi Canat, Mehmet Gökhan Çulha
In our study, we examined the effect of the three-dimensional (3D) stone segmentation volume and its ratio to the renal collecting system on complication rates. Data from141 patients who underwent PCNL surgery were analyzed retrospectively. Volume segmentation of both the renal collecting system and stones was obtained from 3D segmentation software with the images on CT data. After creation of a 3D surface volume rendering of renal stones and the collecting system, segmentation of the renal collecting system volume (RCSV) and analyzed stone volume (ASV) was analyzed and the ASV-to-RCSV ratio was calculated...
August 14, 2018: Urolithiasis
https://www.readbyqxmd.com/read/30109156/application-of-convolutional-neural-network-in-the-diagnosis-of-jaw-tumors
#11
Wiwiek Poedjiastoeti, Siriwan Suebnukarn
Objectives: Ameloblastomas and keratocystic odontogenic tumors (KCOTs) are important odontogenic tumors of the jaw. While their radiological findings are similar, the behaviors of these two types of tumors are different. Precise preoperative diagnosis of these tumors can help oral and maxillofacial surgeons plan appropriate treatment. In this study, we created a convolutional neural network (CNN) for the detection of ameloblastomas and KCOTs. Methods: Five hundred digital panoramic images of ameloblastomas and KCOTs were retrospectively collected from a hospital information system, whose patient information could not be identified, and preprocessed by inverse logarithm and histogram equalization...
July 2018: Healthcare Informatics Research
https://www.readbyqxmd.com/read/30107886/predicting-non-home-discharge-in-epithelial-ovarian-cancer-patients-external-validation-of-a-predictive-model
#12
Elizabeth V Connor, Erica M Newlin, J Eric Jelovsek, Mariam M AlHilli
OBJECTIVE: To externally validate a model predicting non-home discharge in women undergoing primary cytoreductive surgery (CRS) for epithelial ovarian cancer (EOC). METHODS: Women undergoing primary CRS via laparotomy for EOC at three tertiary medical centers in an academic health system from January 2010 to December 2015 were included. Patients were excluded if they received neoadjuvant chemotherapy, had a non-epithelial malignancy, were not undergoing primary cytoreduction, or lacked documented model components...
August 11, 2018: Gynecologic Oncology
https://www.readbyqxmd.com/read/30107690/-stereotactic-iodine-125-brachytherapy-in-the-management-of-adult-thalamic-high-grade-gliomas
#13
J Zheng, F Q Liu
Objective: To evaluate the effect of stereotactic iodine-125 brachytherapy in the management of adult thalamic high grade gliomas. Methods: Five cases of adult thalamic high grade gliomas (WHO Ⅲ-Ⅳ) were treated with stereotactic iodine-125 brachytherapy and temozolomide chemotherapy at the Second Affiliated Hospital of Zhejiang University School of Medicine between December 2016 and February 2018, assisted with stereotactic plan and radiation therapy planning system. Results: Pathology revealed anaplastic astrocytoma (WHO Ⅲ, 2 cases) and glioblastoma (WHO Ⅳ, 3 cases)...
August 7, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/30107247/morphometric-measurements-of-the-c1-lateral-mass-with-congenital-occipitalization-of-the-atlas
#14
Hua-Wei Wang, Yi-Heng Yin, Ya-Zhou Jin, Rui Zong, Teng Li, Guang-Yu Qiao, Xin-Guang Yu
OBJECTIVE: Unfamiliarity with the morphometry of assimilated C1 lateral mass(C1LM) could make screw placement dangerous. In the study, we define the morphometric dimensions of occipitalized C1LM so as to provide surgeons with valuable information for preoperative planning. METHODS: Thin-slice computed tomography scanning data of 131 OA patients and 50 control cases were imported into MIMICS software for analysis. The widths and heights of C1LM were fully measured in different planes...
August 11, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/30106819/free-vascularized-medial-femoral-condyle-bone-graft-after-failed-scaphoid-nonunion-surgery
#15
Nicholas Pulos, Kathleen M Kollitz, Allen T Bishop, Alexander Y Shin
BACKGROUND: Outcomes following revision surgery for scaphoid nonunions with osteonecrosis are guarded. We hypothesized that use of free vascularized medial femoral condyle (MFC) bone grafts can lead to healing of the nonunion, increase vascularity of the proximal pole, and restore scaphoid architecture, resulting in acceptable functional outcomes. METHODS: We performed a retrospective review of 49 patients who were treated with an MFC bone graft, between May 2005 and September 2016, after prior failure of operative treatment for scaphoid nonunion...
August 15, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/30105805/review-current-concept-in-computer-assisted-hip-arthroscopy
#16
REVIEW
Naoki Nakano, Emmanuel Audenaert, Anil Ranawat, Vikas Khanduja
In the last 15 years, hip arthroscopy has become increasingly popular in addressing femoroacetabular impingement (FAI) because of its minimally invasive approach. However, assessing the adequacy of bone resection when correcting FAI can be difficult because visualisation and spatial awareness of the joint are poor. Recent advances in technology in the field of computer-assisted surgery and navigation and robotic surgery in orthopaedics as a resource for preoperative planning and intraoperative assistance have been widely reported...
August 14, 2018: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/30105579/importance-of-the-preoperative-cross-sectional-area-of-the-semispinalis-cervicis-as-a-risk-factor-for-loss-of-lordosis-after-laminoplasty-in-patients-with-cervical-spondylotic-myelopathy
#17
Byung-Jou Lee, Jin Hoon Park, Sang-Ryong Jeon, Seung-Chul Rhim, Sung Woo Roh
PURPOSE: To investigate the effect of the preoperative cross-sectional area (CSA) of the semispinalis cervicis on postoperative loss of cervical lordosis (LCL) after laminoplasty. METHODS: A total of 144 patients who met the inclusion criteria between January 1999 and December 2015 were enrolled. Radiographic assessments were performed to evaluate the T1 slope, C2-7 sagittal vertical axis (SVA), cephalad vertebral level undergoing laminoplasty (CVLL), preoperative C2-7 Cobb angle, and preoperative CSA of the semispinalis cervicis...
August 13, 2018: European Spine Journal
https://www.readbyqxmd.com/read/30105135/one-burr-hole-craniotomy-anterior-interhemispheric-approach-in-helsinki-neurosurgery
#18
Joham Choque-Velasquez, Juha Hernesniemi
Background: In this video-abstract, we present a one burr-hole craniotomy for the anterior interhemispheric approach developed in Helsinki Neurosurgery to access the medial surface of cerebral hemispheres, the falx cerebri, the distal segment of the anterior cerebral artery, the corpus callosum, the third ventricle, and the lateral ventricles. Therefore, preoperative imaging is essential to achieve an optimal operative corridor for safest and more effcient approach. Case Description: The patient with a no ruptured right pericallosal aneurysm is placed in semi-sitting position...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/30104081/a-large-retrospective-database-analysis-comparing-outcomes-of-intraoperative-aberrometry-with-conventional-preoperative-planning
#19
Robert J Cionni, Ramon Dimalanta, Michael Breen, Cody Hamilton
PURPOSE: To evaluate differences between the absolute prediction error using an intraoperative aberrometry (IA) device for intraocular lens (IOL) power determination versus the error that would have resulted if the surgeon's preoperative plan had been followed. SETTING: Multiple centers in the United States. DESIGN: Retrospective analysis of data collected using an IA device. METHODS: The database information was limited according to predetermined inclusion/exclusion criteria...
August 10, 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/30103107/implications-of-the-replaced-right-hepatic-artery-originating-from-the-gastroduodenal-artery-in-the-setting-of-a-pancreatic-head-mass
#20
Akhil Chawla, Michael H Rosenthal, Thomas E Clancy
PURPOSE: The anatomic variability of the hepatic artery has important implications in the treatment of periampullary cancers. The purpose is of this report is to describe the importance of the replaced right hepatic artery originating from the gastroduodenal artery, which is typically removed during a pancreatic head resection, and to demonstrate how this variant can markedly alter treatment planning and intraoperative decision making. MATERIALS AND METHODS: In this report, two cases of a replaced right hepatic artery originating from the gastroduodenal artery are described in the setting of a borderline-resectable pancreatic adenocarcinoma identified on preoperative CT imaging...
August 8, 2018: Clinical Imaging
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