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https://www.readbyqxmd.com/read/28107235/an-experimental-biomechanical-study-on-artificial-atlantoodontoid-joint-replacement-in-dogs
#1
Quanjin Zang, Yanming Liu, Dengfeng Wang, Haopeng Li, Pinglin Yang, Dong Wang, Xijing He
STUDY DESIGN: This study tested the biomechanics of artificial atlantoodontoid joint replacement (AAOJR) in a dog model. Dogs were divided into the artificial AAOJR group (n=10), the decompression group (n=10), and the healthy control group (n=10) using a random number table. OBJECTIVE: To evaluate whether the use of AAOJR for repair of atlantoaxial instability retains rotation and restores stability. SUMMARY OF BACKGROUND DATA: Atlantoaxial instability is characterized by excessive movement or laxity at the junction between the atlas (C1) and axis (C2)...
February 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28105364/disseminated-penicillium-marneffei-infection-recurrence-in-a-non-acquired-immune-deficiency-syndrome-patient-a-case-report
#2
Zhixue Zhang, Fangxu Tao, Yining Li, Yudong Xiao, Zhishu Zhang, Jun Liu
Penicillium marneffei is a rare deep tissue fungal infection causing an endemic in Southeast Asia. This infection causes penicilliosis disease and is more common in patients who are immunocompromised. To date, no cases of P. marneffei infection relapse following treatment have been reported. A 36-year-old patient attended our hospital as a result of intermittent fever, cough, shortness of breath and multiple soft lesions located on the face, arms, neck and trunk. The medical radiological examination of the lung revealed multiple patchy exudative shadows, thick-walled hollow inner part of the visible lesions, bilateral pleural and pericardial effusion...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28103943/a-primary-pure-pancreatic-type-acinar-cell-carcinoma-of-the-stomach-a-case-report
#3
Kyoung Min Kim, Chan Young Kim, Seung-Mo Hong, Kyu Yun Jang
BACKGROUND: Acinar cell carcinoma represents only 1-2% of exocrine pancreatic neoplasms. On exceptionally rare occasions, primary acinar cell carcinoma can occur in ectopic locations. Herein, we report a case of pure pancreatic-type acinar cell carcinoma arising in the stomach. CASE PRESENTATION: A 54-year-old male presented with a gastric submucosal mass detected by endoscopic examination. Laparoscopic wedge resection was performed. Macroscopically, the 2.7 cm yellowish mass was located in the submucosa of the stomach...
January 19, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28100198/mr-imaging-for-detection-of-trampoline-injuries-in-children
#4
E Hauth, H Jaeger, P Luckey, M Beer
BACKGROUND: The recreational use of trampolines is an increasingly popular activity among children and adolescents. Several studies reported about radiological findings in trampoline related injuries in children. The following publication presents our experience with MRI for detection of trampoline injuries in children. METHODS: 20 children (mean 9.2 years, range: 4-15 years) who had undergone an MRI study for detection of suspected trampoline injuries within one year were included...
January 18, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28087093/audiologic-and-radiologic-findings-in-cochlear-hypoplasia
#5
Betul Cicek Cinar, Merve Ozbal Batuk, Emel Tahir, Gonca Sennaroglu, Levent Sennaroglu
OBJECTIVE: The aim of the current study is to evaluate audiologic and radiologic findings of cochlear hypoplasia which is a subgroup of inner ear malformations. METHODS: This study was a prospective clinical study and based on voluntary participation from cases with cochlear hypoplasia diagnosis. The study was conducted at Hacettepe University, Department of Otolaryngology, Head and Neck Surgery and Department of Audiology. Subjects were selected from an inner ear malformations database...
January 10, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28081584/-mini-open-approach-shows-good-results-in-treatment-of-femoroacetabular-impingement
#6
Stephanie Maria Kirschbaum, Frank Sitterlee, Carsten Perka, Michael Müller
Background Femoroacetabular impingement (FAI) describes a painful, abnormal (bony) contact between the femoral neck and acetabulum, which, if left untreated, contributes to early osteoarthritis (OA) of the hip. Despite its flat learning curve and long operation times, hip arthroscopy has been used increasingly often in recent years in the surgery of femoroacetabular impingement. The mini-open technique (MOT) offers a possible alternative that addresses the abnormal morphological prominence and allows minimally invasive clearance of hip motion...
January 12, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28059707/ct-accuracy-of-extrinsic-tongue-muscle-invasion-in-oral-cavity-cancer
#7
J C Junn, K L Baugnon, E A Lacayo, P A Hudgins, M R Patel, K R Magliocca, A S Corey, M El-Deiry, J T Wadsworth, J J Beitler, N F Saba, Y Liu, A H Aiken
BACKGROUND AND PURPOSE: Extrinsic tongue muscle invasion in oral cavity cancer upstages the primary tumor to a T4a. Despite this American Joint Committee on Cancer staging criterion, no studies have investigated the accuracy or prognostic importance of radiologic extrinsic tongue muscle invasion, the feasibility of standardizing extrinsic tongue muscle invasion reporting, or the degree of agreement across different disciplines: radiology, surgery, and pathology. The purpose of this study was to assess the agreement among radiology, surgery, and pathology for extrinsic tongue muscle invasion and to determine the imaging features most predictive of extrinsic tongue muscle invasion with surgical/pathologic confirmation...
November 10, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28048590/we-ab-brb-03-real-time-volumetric-scintillation-dosimetry-for-radiation-therapy
#8
S Beddar
: Despite widespread IMRT treatments at modern radiation therapy clinics, precise dosimetric commissioning of an IMRT system remains a challenge. In the most recent report from the Radiological Physics Center (RPC), nearly 20% of institutions failed an end-to-end test with an anthropomorphic head and neck phantom, a test that has rather lenient dose difference and distance-to-agreement criteria of 7% and 4 mm. The RPC report provides strong evidence that IMRT implementation is prone to error and that improved quality assurance tools are required...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048141/su-f-j-153-acr-mri-phantom-test-on-a-1-5t-mr-simulator-with-flexible-coils-setting-and-performance-comparison-to-volumetric-head-coil-setting
#9
J Yuan, O Wong, K Cheung, S Yu
PURPOSE: To accommodate head-and-neck (HN) RT simulation scan with immobilization, sub-optimized flexible radiofrequency coils have to be used on an MR-sim rather than a volumetric head coil for diagnostic radiological (DR) applications. In this study, we present and compare ACR MRI phantom test with flexible coils setting (RT-setting) and volumetric head coil setting (DR-setting). METHODS: Two 8-channel array coils were wrapped close to an ACR MRI phantom placed on a flat couch-top in RT-setting for acquisition...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047926/we-ab-brb-04-cherenkov-imaging-for-radiation-therapy-dose-verification-on-patients
#10
B Pogue
: Despite widespread IMRT treatments at modern radiation therapy clinics, precise dosimetric commissioning of an IMRT system remains a challenge. In the most recent report from the Radiological Physics Center (RPC), nearly 20% of institutions failed an end-to-end test with an anthropomorphic head and neck phantom, a test that has rather lenient dose difference and distance-to-agreement criteria of 7% and 4 mm. The RPC report provides strong evidence that IMRT implementation is prone to error and that improved quality assurance tools are required...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047862/we-ab-brb-00-session-in-memory-of-robert-j-shalek-high-resolution-dosimetry-from-2d-to-3d-to-real-time-3d
#11
Harold Li
: Despite widespread IMRT treatments at modern radiation therapy clinics, precise dosimetric commissioning of an IMRT system remains a challenge. In the most recent report from the Radiological Physics Center (RPC), nearly 20% of institutions failed an end-to-end test with an anthropomorphic head and neck phantom, a test that has rather lenient dose difference and distance-to-agreement criteria of 7% and 4 mm. The RPC report provides strong evidence that IMRT implementation is prone to error and that improved quality assurance tools are required...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047199/we-ab-brb-01-memorial-introduction-storage-phosphor-panels-for-radiation-therapy-dosimetry
#12
H Li
: Despite widespread IMRT treatments at modern radiation therapy clinics, precise dosimetric commissioning of an IMRT system remains a challenge. In the most recent report from the Radiological Physics Center (RPC), nearly 20% of institutions failed an end-to-end test with an anthropomorphic head and neck phantom, a test that has rather lenient dose difference and distance-to-agreement criteria of 7% and 4 mm. The RPC report provides strong evidence that IMRT implementation is prone to error and that improved quality assurance tools are required...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047156/su-f-t-593-technical-treatment-accuracy-in-a-clinic-of-fractionated-stereotactic-radiosurgery
#13
R Bisht, S Kale, G Natanasabapathi, M Singh, D Agarwal, G Rath, P Julka, P Kumar, S Thulkar, A Garg, B Sharma
PURPOSE: The purpose of this study is to estimate technical treatment accuracy in fractionated stereotactic radiosurgery (fSRS) using extend system (ES) of Gamma Knife (GK). METHODS: The fSRS with GK relies on a patient specific re-locatable immobilization system. The reference treatment position is estimated using a digital probe and a repositioning check tool (RCT). The "calibration values" of RCT apertures were compared with measured values on RCT-QA tool to evaluate the standard error (SE) associated with RCT measurements...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046529/we-ab-brb-02-methods-and-applications-of-3d-radiochromic-dosimetry
#14
M Oldham
: Despite widespread IMRT treatments at modern radiation therapy clinics, precise dosimetric commissioning of an IMRT system remains a challenge. In the most recent report from the Radiological Physics Center (RPC), nearly 20% of institutions failed an end-to-end test with an anthropomorphic head and neck phantom, a test that has rather lenient dose difference and distance-to-agreement criteria of 7% and 4 mm. The RPC report provides strong evidence that IMRT implementation is prone to error and that improved quality assurance tools are required...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28044201/radiotherapy-in-desmoid-tumors-treatment-response-local-control-and-analysis-of-local-failures
#15
Kirsi Santti, Annette Beule, Laura Tuomikoski, Mikko Rönty, Anna-Stina Jääskeläinen, Kauko Saarilahti, Hanna Ihalainen, Maija Tarkkanen, Carl Blomqvist
BACKGROUND: Desmoid tumors (aggressive fibromatosis) are rare soft tissue tumors which frequently recur after surgery. Desmoid tumors arise from musculoaponeurotic tissue in the extremities, head and neck, abdominal wall, or intra-abdominally. Our aim was to examine the outcome of radiotherapy of desmoid tumors in a single institution series. PATIENTS AND METHODS: We evaluated 41 patients with desmoid tumors treated with 49 radiotherapies between 1987 and 2012...
January 2, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28039644/incidence-of-abdominal-wall-metastases-following-percutaneous-endoscopic-gastrostomy-placement-in-patients-with-head-and-neck-cancer
#16
Eleanor Fung, David S Strosberg, Edward L Jones, Rebecca Dettorre, Andrew Suzo, Michael P Meara, Vimal K Narula, Jeffrey W Hazey
INTRODUCTION: Percutaneous endoscopic gastrostomy (PEG) tubes are an effective modality for enteral nutrition in patients with head and neck cancer; however, there have been documented case reports of "seeding" of the abdominal wall by the theoretic risk of dragging the tube along the tumor during PEG placement. The objective of this study is to determine the incidence and contributing risk factors leading to metastasis to the abdominal wall following PEG placement in patients with head and neck cancer...
December 30, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/28032679/acr-appropriateness-criteria-%C3%A2-nasal-cavity-and-paranasal-sinus-cancers
#17
Farzan Siddiqui, Richard V Smith, Sue S Yom, Jonathan J Beitler, Paul M Busse, Jay S Cooper, Ehab Y Hanna, Christopher U Jones, Shlomo A Koyfman, Harry Quon, John A Ridge, Nabil F Saba, Francis Worden, Min Yao, Joseph K Salama
The American College of Radiology (ACR) Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer-reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios...
December 29, 2016: Head & Neck
https://www.readbyqxmd.com/read/28032083/dihydropyrimidine-dehydrogenase-mutation-in-neoadjuvant-chemotherapy-in-head-and-neck-cancers-myth-or-reality
#18
Vijay M Patil, Vanita Noronha, Amit Joshi, Saurabh Zanwar, Anant Ramaswamy, Supreeta Arya, Abhishek Mahajan, Atanu Bhattacharjee, Kumar Prabhash
PURPOSE: The docetaxel, 5-fluorouracil (5-FU), and cisplatin (TPF) regimen in India is associated with high percentages of Grade 3-4 toxicity. This analysis was planned to evaluate the incidence of dihydropyrimidine dehydrogenase (DPD) mutation in patients with severe gastrointestinal toxicity, to assess whether the mutation could be predicted by a set of clinical criteria and whether it has any impact on postneoadjuvant chemotherapy response. METHODS: All consecutive patients who received TPF regimen in head and neck cancers between January 2015 and April 2015 were selected...
October 2016: South Asian Journal of Cancer
https://www.readbyqxmd.com/read/28031513/double-intertrochanteric-osteotomy-for-trochanteric-overgrowth-and-a-short-femoral-neck-in-adolescents
#19
Turgut Akgül, Cengiz Şen, Halil İbrahim Balci, Gökhan Polat
PURPOSE: To review the outcome of Wagner double intertrochanteric osteotomy for trochanteric overgrowth and a short femoral neck in 7 adolescents. METHODS: Records of one male and 6 females aged 15 to 20 years who underwent modified Wagner osteotomy for trochanteric overgrowth and a short femoral neck by a single senior surgeon were reviewed. The diagnoses were coxa vara (n=2), developmental dysplasia of the hip (n=3), Leg-Calve-Perthes (n=1), and proximal femoral focal deficiency (n=1)...
December 2016: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28018060/isolated-dorsal-column-dysfunction-due-to-an-intraspinal-osteolipoma-case-report-and-review-of-literature
#20
Siddharth N Aiyer, Ajoy Prasad Shetty, Rishi Kanna, Anupama Maheswaran, S Rajasekaran
Osteolipoma is a rare variant of the ubiquitous lipoma. Published literature appears in the form of isolated case reports affecting soft tissue structures in the head, neck and rarely affecting the spine. We present a unique instance of an intraspinal osteolipoma in the cervical spine, without evidence of accompanying spinal dysraphism and an atypical clinical presentation of isolated dorsal column dysfunction. We describe the clinical presentation, operative procedure and post-operative outcomes with histopathological findings of this rare entity...
October 2016: Journal of Clinical Orthopaedics and Trauma
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