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Approach to a neck mass

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https://www.readbyqxmd.com/read/28324213/-split-and-splayed-c3-traumatic-lateral-c2-3-dislocation-without-neurological-deficits-unique-case-and-its-management
#1
Apinderpreeet Singh, Pravin Salunke, Rajeev P Kamble
BACKGROUND: Traumatic C2-3 dislocation has been often described in the antero-posterior plane but is extremely rare in the lateral plane. Such dislocations have been described in thoraco-lumbar and C1-2. The need to study the imaging in multiple planes has been highlighted to plan proper realignment. METHODS: A young male presented with neck pain alone following a train accident. The imaging showed a fracture of C3 splaying it. The C2-3 showed lateral dislocation in the lateral plane with locked C2-3 facets on one side and C3-4 facets on the other...
March 21, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28316103/identification-of-hip-bmd-loss-and-fracture-risk-markers-through-population-based-serum-proteomics
#2
Carrie M Nielson, Jack Wiedrick, Jian Shen, Jon Jacobs, Erin S Baker, Aaron Baraff, Paul Piehowski, Christine G Lee, Arie Baratt, Vladislav Petyuk, Shannon McWeeney, Jeong Youn Lim, Douglas C Bauer, Nancy E Lane, Peggy M Cawthon, Richard D Smith, Jodi Lapidus, Eric S Orwoll
Serum proteomics analysis may lead to the discovery of novel osteoporosis biomarkers. The Osteoporotic Fractures in Men Study (MrOS) comprises men ≥65 in the US who have had repeated BMD measures and have been followed for incident fracture. High-throughput quantitative proteomic analysis was performed on baseline fasting serum samples from non-Hispanic white men using a multi-dimensional approach coupling liquid chromatography, ion-mobility separation, and mass spectrometry (LC-IMS-MS). We followed the participants for a mean of 4...
March 18, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28288077/comparison-of-surgical-outcomes-between-a-triplane-proximal-femoral-osteotomy-and-the-modified-dunn-procedure-for-stable-moderate-to-severe-slipped-capital-femoral-epiphysis
#3
Jakub Sikora-Klak, James D Bomar, Christina N Paik, Dennis R Wenger, Vidyadhar Upasani
BACKGROUND: Recent studies have demonstrated the intra-articular cartilage and labral damage that can occur from the proximal femoral cam-like deformity of a moderate to severe slipped capital femoral epiphysis (SCFE). The approach to treating this deformity in a symptomatic Loder stable hip is controversial. The purpose of this study was to compare radiographic outcomes, complication rates, and revision rates between Imhauser type triplane proximal femoral osteotomy (TPFO) and the modified Dunn procedure (MDP)...
March 10, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28219168/-thyroid-adenoma-in-the-piriform-fossa-a-case-report-and-literature-review
#4
X T Huang, B Ma, M B Liu, Y Zhang, D L Huang, L Chen
Objective: To explore the clinical characteristics of case of thyroid adenoma in the piriform fossa, and review the literatures of the congentital thyroid gland abnormality. Methods: A 44-year-old male had foreign body feeling in his pharynx for 3 years. A mass in his left piriform fossa was detected by the clinical and imaging examination. Biopsy report that the mass was thyroid papillary carcinoma. The resection of tumor with partial back thyroid cartilage through lateral neck and pharyngeal approach was performed...
February 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28205412/an-investigation-of-dimensional-scaling-using-cervical-spine-motion-segment-finite-element-models
#5
Dilaver Singh, Duane S Cronin
The paucity of experimental data for validating computational models of different statures underscores the need for appropriate scaling methods so that models can be verified and validated using experimental data. Scaling was investigated using 50(th) percentile male (M50) and 5(th) percentile female (F05) cervical spine motion segment (C4-C5) finite element models subject to tension, flexion and extension loading. Two approaches were undertaken: geometric scaling of the models to investigate size effects (volumetric scaling) and scaling of the force-displacement or moment-angle model results (data scaling)...
February 15, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/28191301/plunging-ranula-in-children-case-report-and-literature-review
#6
Veronica Carlini, Valeria Calcaterra, Noemi Pasqua, Marinella Guazzotti, Mario Fusillo, Gloria Pelizzo
Few cases of plunging ranulas (PRs) occur during childhood and the lesions are frequently misdiagnosed. Here, a PR in a child is reported along with a literature review. A seven-year-old female complaining of swelling in the midline neck, left-submandibular region, was evaluated. No oral cavity or major salivary glands abnormalities were detected. On palpation, a soft, painless, and fluid-containing mass was observed. The suspicion PR was performed by ultrasound. The diagnosis was confirmed with a histopathological examination...
November 17, 2016: Pediatric Reports
https://www.readbyqxmd.com/read/28116483/facelift-approach-for-resecting-benign-upper-neck-masses
#7
Jun-Ook Park
BACKGROUND: This study evaluated the feasibility of non-magnified resection of various benign lesions of the upper neck using the facelift incision without endoscopic equipment to establish indications for the procedure. METHODS: This retrospective analysis examined 86 patients who underwent surgery for upper neck masses using the facelift incision or conventional transcervical incision at our institute between January 2012 and December 2015. RESULTS: We performed 41 operations using facelift incisions (facelift group) and 45 using conventional horizontal incisions (conventional group)...
January 23, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28108172/the-accuracy-of-digital-templating-for-primary-total-hip-arthroplasty-is-there-a-difference-between-direct-anterior-and-posterior-approaches
#8
Shai S Shemesh, Jonathan Robinson, Aakash Keswani, Michael J Bronson, Calin S Moucha, Darwin Chen
BACKGROUND: The direct anterior approach (DAA) has gained recent popularity for total hip arthroplasty (THA), as it provides immediate feedback on cup position and limb length using fluoroscopy. The purpose of this study is to evaluate any differences in the accuracy of digital templating for preoperative planning of THA, performed with 2 different surgical approaches: DAA using a radiolucent table with intraoperative fluoroscopy and the posterior approach (PA). METHODS: One hundred thirty-one consecutive patients (148 hips) underwent a THA by a single surgeon, using the same cup and stem designs...
December 27, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28097935/finite-element-simulations-of-the-head-brain-responses-to-the-top-impacts-of-a-construction-helmet-effects-of-the-neck-and-body-mass
#9
John Z Wu, Christopher S Pan, Bryan M Wimer, Charles L Rosen
Traumatic brain injuries are among the most common severely disabling injuries in the United States. Construction helmets are considered essential personal protective equipment for reducing traumatic brain injury risks at work sites. In this study, we proposed a practical finite element modeling approach that would be suitable for engineers to optimize construction helmet design. The finite element model includes all essential anatomical structures of a human head (i.e. skin, scalp, skull, cerebrospinal fluid, brain, medulla, spinal cord, cervical vertebrae, and discs) and all major engineering components of a construction helmet (i...
January 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28077236/high-resolution-ultrahigh-pressure-long-column-reversed-phase-liquid-chromatography-for-top-down-proteomics
#10
Yufeng Shen, Nikola Tolić, Paul D Piehowski, Anil K Shukla, Sangtae Kim, Rui Zhao, Yi Qu, Errol Robinson, Richard D Smith, Ljiljana Paša-Tolić
Separation of proteoforms for global intact protein analysis (i.e. top-down proteomics) has lagged well behind what is achievable for peptides in traditional bottom-up proteomic approach and is becoming a true bottle neck for top-down proteomics. Herein, we report use of long (≥1M) columns containing short alkyl (C1-C4) bonded phases to achieve high-resolution RPLC for separation of proteoforms. At a specific operation pressure limit (i.e., 96.5MPa or 14Kpsi used in this work), column length was found to be the most important factor for achieving maximal resolution separation of proteins when 1...
January 5, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28067967/feasibility-of-using-the-retroauricular-approach-without-endoscopic-or-robotic-assistance-for-excision-of-benign-neck-masses
#11
Dongbin Ahn, Jin Ho Sohn, Gil Joon Lee, Ki Ha Hwang
BACKGROUND: The purpose of this study was to present our evaluation of the feasibility of using a retroauricular approach for excision of benign upper neck mass lesions without assistance of an endoscopic or robotic system. METHODS: We enrolled 23 patients with benign neck mass lesions of the parotid gland, submandibular gland, and the level II/III region who underwent surgery via a retroauricular approach. RESULTS: In 22 of 23 patients (95...
January 9, 2017: Head & Neck
https://www.readbyqxmd.com/read/28053877/metabolomic-analysis-identifies-differentially-produced-oral-metabolites-including-the-oncometabolite-2-hydroxyglutarate-in-patients-with-head-and-neck-squamous-cell-carcinoma
#12
Pranab K Mukherjee, Pauline Funchain, Mauricio Retuerto, Richard J Jurevic, Nicole Fowler, Brian Burkey, Charis Eng, Mahmoud A Ghannoum
BACKGROUND: Metabolomics represents a promising approach for discovering novel targets and biomarkers in head and neck squamous cell carcinoma (HNSCC). Here we used metabolomics to identify oral metabolites associated with HNSCC. METHODS: Tumor and adjacent normal tissue from surgical resections and presurgical oral washes as well as oral washes were collected from healthy participants. Metabolites extractions of these samples were analyzed by liquid chromatography-mass spectroscopy (LC/MS), LC/MS/MS and gas chromatography-MS (GC/MS)...
June 2017: BBA Clinical
https://www.readbyqxmd.com/read/28053701/primary-thyroid-lymphoma-a-case-report-and-review-of-the-literature
#13
Rita Peixoto, João Correia Pinto, Virgínia Soares, Pedro Koch, António Taveira Gomes
INTRODUCTION: A rapidly enlarging mass of the anterior compartment of the neck with compressive symptoms may represent, among other diagnosis, a neoplasm of the thyroid gland. PRESENTATION OF CASE: We describe the case of a 59-year-old woman referred to the endocrine surgical unit because of compressive cervical symptoms for 3 months. The cervical ultrasound revealed a sub-sternal goiter with heterogeneous echo structure and the fine-needle aspirating cytology was inconclusive...
January 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28026203/sexual-dimorphism-in-bone-muscle-relationship-in-young-adults
#14
Vera Zymbal, Kathleen F Janz, Fátima Baptista
The purpose of this study was to analyse associations between lean soft tissue (LST), a surrogate of skeletal muscle mass and key fracture-related geometric characteristics of the proximal femur. Moreover, we examined the role that muscle played on the proximal femur geometry in response to physical activity (PA). Participants were 83 young adults. Leg LST (exposure) was assessed by dual energy X-ray absorptiometry (DXA). Proximal femur geometry was derived from a left hip DXA scan. Geometric variables (outcomes) included the femoral neck axis length (FNAL), the femoral neck width (FNW), the neck-shaft angle and FNW|FNAL (an index of robustness)...
December 27, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28011093/influence-of-different-stabilizers-on-the-encapsulation-of-desmopressin-acetate-into-plga-nanoparticles
#15
Daniel Primavessy, Nazende Günday-Türeli, Marc Schneider
To address targeting and bioavailability issues of peptidic drugs like desmopressin, the encapsulation into nanoparticles (NP) has become standard in pharmaceutics. This study investigated the encapsulation of desmopressin into PLGA NP by the use of pharmaceutically common stabilizers as a precursor to future, optional targeting and bioavailability experiments. Polymer dry weights were measured by freeze drying and thermo gravimetric analysis (TGA). Particle sizes (ranging between 105 and 130 nm, PDI < 0...
December 20, 2016: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/27974173/multivariate-analysis-as-an-advantageous-approach-for-prediction-of-the-adverse-outcome-in-head-and-neck-microvascular-reconstructive-surgery
#16
Pawel Golusinski, Jakub Pazdrowski, Mateusz Szewczyk, Piotr Pieńkowski, Ewa Majchrzak, Augusto Schneider, Michal M Masternak, Wojciech Golusinski
BACKGROUND: The use of a free flap has become a mainstay of reconstruction following the ablative surgery in head and neck. The success rates are about 90%, however, several factors have been described to have an adverse effect on free flap survival. METHODS: We have performed a retrospective analysis of the treatment outcome of 93 microvascular flaps and evaluated the factors influencing the risk of flap loss including patients' age, body mass index, smoking, general medical history and previous oncological treatment...
December 9, 2016: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/27920856/tongue-base-schwannoma-differential-diagnosis-and-imaging-features-with-a-case-presentation
#17
Zain Badar, Zerwa Farooq, Daniel Zaccarini, Sajeev R Ezhapilli
Schwannomas are slow growing, encapsulated neoplasms that arise from the nerve sheath. A vast majority of these benign neoplasms occur in the head and neck region, most commonly involving the 8th cranial nerve. Schwannomas arising from the base of tongue are very rare and, thus, can easily escape the list of differential diagnosis for a posterior tongue mass. A systematic approach is recommended for diagnosis of a posterior tongue mass, with neoplastic, infectious, and congenital categories. We report a case of a 24-year-old female, who presented with pressure sensation in the throat...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27913808/treatment-of-upper-extremity-venous-aneurysms-with-a-polytetrafluoroethylene-covered-stent
#18
David Parizh, Jesse Victory, Syed Ali Rizvi, Anil Hingorani, Enrico Ascher
Background Venous aneurysms of the upper torso are uncommon in contrast to the abdomen and lower extremities. Mostly silent, they can cause significant morbidity. Large or symptomatic venous aneurysms are generally treated with open resection. To our knowledge, there are no documented cases of head and neck venous aneurysms treated by a hybrid endovascular and open approach. Case Presentation A 56-year-old female presented with the complaint of pain and increasing size of a supraclavicular mass. Imaging revealed a large saccular aneurysm of the subclavian vein with the presence of a large intramural thrombus on computed tomography scan with contrast...
January 1, 2016: Vascular
https://www.readbyqxmd.com/read/27909818/presto-lift-a-facelift-that-preserves-the-retaining-ligaments-and-smas-tethering
#19
Wolfgang Funk
BACKGROUND: Producing youthful facial appearance by face-lifting often comes along with an undesired loss of patient's individual phenotype. This may result from insufficient preservation of retaining ligaments, the "guardians of facial identify," and from severance of the intersegmental connections of the superficial musculo-aponeurotic system (SMAS), which tether, structure, and compartmentalize facial soft tissue into defined, relevant anatomical zones. METHODS: The technique reported here preserves most retaining ligaments...
March 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27895906/respiratory-distress-associated-with-heterotopic-gastrointestinal-cysts-of-the-oral-cavity-a-case-report
#20
Marco Antonio Méndez Sáenz, Mario de Jesús Villegas González, Marco A Ponce Camacho, Lucia M Cavazos Cavazos, Bárbara Sáenz Ibarra, Blanca I Esquivel García, José Luis Treviño González
Heterotopic gastrointestinal cysts of the oral cavity are benign lesions usually discovered during infancy. Their pathogenesis is not very clear. They are rare congenital anomalies that result from remnants of foregut-derived epithelium in the head, neck, thorax or abdomen during embryonic development. The majority of these lesions occur in the anterior ventral surface of the tongue and extend to the floor of the mouth. They are confused clinically by surgeons in cases of head and neck masses in children as ranulas, dermoid and thyroglossal cysts, and lymphangioma...
December 2016: Annals of Medicine and Surgery
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