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Anatomy variation

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https://www.readbyqxmd.com/read/28238089/comparative-morphology-of-the-odoriferous-system-in-three-predatory-stink-bugs-heteroptera-asopinae
#1
Luis Carlos Martínez, Angelica Plata-Rueda, José Cola Zanuncio, Wagner de Souza Tavares, José Eduardo Serrão
The metathoracic scent system in Heteroptera produces and releases defensive volatile compounds. The odor produced by predatory stink bugs differs from phytophagous bugs, suggesting a variation between the structure and function of the metathoracic scent system. The anatomy and ultrastructure of the external thoracic efferent system, scent gland, and reservoir in the stink bug predators Brontocoris tabidus, Podisus nigrispinus, and Supputius cincticeps (Heteroptera: Pentatomidae: Asopinae) were studied. External thoracic efferent systems of B...
February 25, 2017: Protoplasma
https://www.readbyqxmd.com/read/28228312/a-study-of-coronary-artery-variants-and-anomalies-observed-at-a-tertiary-care-armed-forces-hospital-using-64-slice-mdct
#2
Akhilesh Rao, Yayati Pimpalwar, Neha Yadu, R K Yadav
BACKGROUND: Isolated coronary artery anomalies are usually clinically silent and mostly detected incidentally during angiography or autopsy. However, few of them may be implicated in cases of sudden cardiac death even in the absence of additional heart abnormalities. Prior knowledge of such variants and anomalies is necessary for planning various interventional procedures. Multiple detector computed tomography coronary angiography has proved a very useful non-invasive modality in this field given its superiority over conventional coronary angiography in providing detailed coronary artery anatomy...
January 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28215346/a-micro-computed-tomography-evaluation-of-the-shaping-ability-of-two-nickel-titanium-instruments-hyflex-edm-and-protaper-next
#3
Pier Matteo Venino, Claudio Luigi Citterio, Alberto Pellegatta, Marta Ciccarelli, Marcello Maddalone
INTRODUCTION: The aim of this study was to evaluate and compare, by means of micro-computed tomography imaging, the shaping ability of ProTaper Next (PTN) and the novel HyFlex EDM (HFEDM) instruments. METHODS: Forty teeth were randomly divided into 2 groups and prepared with PTN or HFEDM. Root canal transportation and centering ratio were evaluated in mesiodistal and buccolingual directions at 5 levels (at the midpoint of the apical, middle, and coronal thirds and at the boundaries between them)...
February 15, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28213852/-imaging-of-the-lumbosacral-plexus-diagnostics-and-treatment-planning-with-high-resolution-procedures
#4
S Jengojan, C Schellen, G Bodner, G Kasprian
BACKGROUND: Technical advances in magnetic resonance (MR) and ultrasound-based neurography nowadays facilitate the radiological assessment of the lumbosacral plexus. OBJECTIVE: Anatomy and imaging of the lumbosacral plexus and diagnostics of the most common pathologies. MATERIAL AND METHODS: Description of the clinically feasible combination of magnetic resonance imaging (MRI) and ultrasound diagnostics, case-based illustration of imaging techniques and individual advantages of MRI and ultrasound-based diagnostics for various pathologies of the lumbosacral plexus and its peripheral nerves...
February 17, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28213639/prechiasmatic-sulcus-and-optic-strut-an-anatomic-study-in-dry-skulls
#5
Vasiliki Kanellopoulou, Evgenia Efthymiou, Vasiliki Thanopoulou, Dimitra Kozompoli, Dimitrios Mytilinaios, Maria Piagkou, Elizabeth O Johnson
BACKGROUND: Although safe surgical access to the cavernous sinus is related to understanding the anatomical and ethnic variants of the prechiasmatic sulcus and the optic strut, there remains a paucity of studies of the morphology and the bony relationships in the region. The present study provides a systematic morphological and morphometric analysis of the sulcal region and the optic strut anatomy and their relations in a Greek population. METHODS: The interoptic distance, length of planum sphenoidale, sulcal length and sulcal angle was determined in 96 Greek adult dry skulls...
February 17, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28210449/oral-mucosal-lesions-in-a-chilean-elderly-population-a-retrospective-study-with-a-systematic-review-from-thirteen-countries
#6
César Rivera, Daniel Droguett, María-Jesús Arenas-Márquez
BACKGROUND: The oral examination is an essential part of the multidisciplinary medical care in elderly people. Oral mucosal lesions and normal variations of oral anatomy (OMLs) are very common in this people, but few studies have examined the frequency and prevalence of these conditions worldwide and less in Chile. The aim of this research was to evaluate the frequency of OMLs in a Chilean elderly population. MATERIAL AND METHODS: It was conducted a retrospective study (Talca, Chile)...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28204844/safe-placement-of-lateral-mass-screw-in-the-subaxial-cervical-spine-a-case-series
#7
Di Zhang, Xianda Gao, Jiang Jiang, Fanlong Kong, Yong Shen, Wenyuan Ding, Xiufang Hao, Huixian Cui
PURPOSE: Laminectomy with lateral mass screw fixation has been proven to be an effective method to treat the multilevel cervical degenerative myelopathy and severe cervical spondylosis. However, accurate and safe insertion of the lateral mass screw is technically demanding due to the individual variations of the anatomy of the lateral mass of the subaxial cervical spine. Misplaced lateral mass screw is not uncommon, and operation-related complications still beset the surgeons, which may impair the clinical outcomes...
February 15, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28198921/premaxillary-crest-variation-within-the-wukongopteridae-reptilia-pterosauria-and-comments-on-cranial-structures-in-pterosaurs
#8
Xin Cheng, Shunxing Jiang, Xiaolin Wang, Alexander W A Kellner
Cranial crests show considerable variation within the Pterosauria, a group of flying reptiles that developed powered flight. This includes the Wukongopteridae, a clade of non-pterodactyloids, where the presence or absence of such head structures, allied with variation in the pelvic canal, have been regarded as evidence for sexual dimorphism. Here we discuss the cranial crest variation within wukongopterids and briefly report on a new specimen (IVPP V 17957). We also show that there is no significant variation in the anatomy of the pelvis of crested and crestless specimens...
February 9, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28197028/gross-morphological-study-of-the-renal-pelvicalyceal-patterns-in-human-cadaveric-kidneys
#9
T S R Anjana, Elangovan Muthian, Sivakami Thiagarajan, Sumathi Shanmugam
INTRODUCTION: The knowledge of detailed calyceal anatomy is essential for performing urologic procedures such as percutaneous nephrolithotomy, percutaneous nephrostomy, flexible ureterorenoscopy, endopyelotomy, and retrograde renal surgery. This study was performed to analyze the various patterns of pelvicalyceal system in the South Indian population, and compare these with previously published studies in different populations. METHODS: The study was conducted in 100 kidney specimens...
January 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28196000/population-statistics-approach-for-safety-assessment-in-robotic-cochlear-implantation
#10
Tom Williamson, Kate Gavaghan, Nicolas Gerber, Stefan Weder, Lukas Anschuetz, Franca Wagner, Christian Weisstanner, Georgios Mantokoudis, Marco Caversaccio, Stefan Weber
HYPOTHESIS: Descriptive statistics with respect to patient anatomy and image guidance accuracy can be used to assess the effectiveness of any system for minimally invasive cochlear implantation, on both an individual patient and wider population level. BACKGROUND: Minimally invasive cochlear implantation involves the drilling of a tunnel from the surface of the mastoid to cochlea, with the trajectory passing through the facial recess. The facial recess anatomy constrains the drilling path and places prohibitive accuracy requirements on the used system...
February 10, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28194366/maxillary-first-molar-with-7-root-canals-diagnosed-using-cone-beam-computed-tomography
#11
Evaldo Rodrigues, Antônio Henrique Braitt, Bruno Ferraz Galvão, Emmanuel João Nogueira Leal da Silva
Root canal anatomy is complex, and the recognition of anatomic variations could be a challenge for clinicians. This case report describes the importance of cone beam computed tomographyic (CBCT) imaging during endodontic treatment. A 23 year old woman was referred by her general dental practitioner with the chief complaint of spontaneous pain in her right posterior maxilla. From the clinical and radiographic findings, a diagnosis of symptomatic irreversible pulpitis was made and endodontic treatment was suggested to the patient...
February 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28179915/a-review-on-root-anatomy-and-canal-configuration-of-the-maxillary-second-molars
#12
REVIEW
Negin Ghasemi, Saeed Rahimi, Shahriar Shahi, Mohammad Samiei, Mohammad Frough Reyhani, Bahram Ranjkesh
INTRODUCTION: The complexity of the root canal system presents a challenge for the practitioner. This systematic review evaluated the papers published in the field of root canal anatomy and configuration of the root canal system in permanent maxillary second molars. METHODS AND MATERIALS: All articles related to the root morphology and root canal anatomy of the permanent maxillary second molars were collected by suitable keywords from PubMed database. The exhaustive search included all publications from 1981 to December 2015...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28177991/variations-in-the-vascular-anatomy-of-the-right-colon-and-implications-for-right-sided-colon-surgery
#13
Mehmet Ayhan Kuzu, Erkin İsmail, Safa Çelik, Muhammed Feyzi Şahin, Mehmet Ali Güner, Werner Hohenberger, Halil İbrahim Açar
BACKGROUND: Knowledge of the normal pattern and variations of the blood supply of the right colon is crucial for better outcomes after colon surgery. OBJECTIVE: The purpose of this study was to describe the precise vascular anatomy of the right colon according to surgical perspective. DESIGN: Adult fresh cadavers were dissected between January 2013 and October 2015, focusing on the venous and arterial anatomy of the right side of the colon...
March 2017: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/28166057/proton-therapy-of-prostate-cancer-by-anterior-oblique-beams-implications-of-setup-and-anatomy-variations
#14
M Moteabbed, A Trofimov, G C Sharp, Y Wang, A L Zietman, J A Efstathiou, H-M Lu
Proton therapy of prostate by anterior beams could offer an attractive option for treating patients with hip prosthesis and limiting the high-dose exposure to the rectum. We investigated the impact of setup and anatomy variations on the anterior-oblique (AO) proton plan dose, and strategies to manage these effects via range verification and adaptive delivery. Ten patients treated by bilateral (BL) passive-scattering proton therapy (79.2 Gy in 44 fractions) who underwent weekly verification CT scans were selected...
March 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28165635/variance-of-the-pectoralis-major-in-relation-to-the-inframammary-fold-and-the-pectoralis-minor-and-its-application-to-breast-surgery
#15
Woo Yeol Baek, Il Hwan Byun, Young Seok Kim, Bok Ki Jung, In Sik Yun, Tai Suk Roh
INTRODUCTION: Understanding the anatomy of the muscles and other structures of the chest is of great importance in breast surgery. We have conducted the first analysis of the overall variations and relationships among the pectoralis major (PM), inframammary fold (IMF), and pectoralis minor (Pm). MATERIALS AND METHODS: We studied 30 patients and 10 cadavers, leading to a total of 50 breasts. Preoperatively, the breast width was measured, and the costal origin of the lowest IMF point was marked...
February 6, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28153693/breathing-parameters-associated-to-two-different-external-nasal-dilator-strips-in-endurance-athletes
#16
Giancarlo Ottaviano, Andrea Ermolao, Ennio Nardello, Flavio Muci, Vittorio Favero, Marco Zaccaria, Lorenzo Favero
OBJECTIVE: The aim of the study was to investigate and compare the effects of two different external nasal dilator strips (ENDS) on nasal respiratory flow, maximal oxygen uptake (VO2max), nasal VO2max, time to exhaustion and subjective nasal obstruction in adult triathletes participating in exhaustive, controlled physical exercise tests. METHODS: Thirteen healthy triathletes without nasal symptoms were recruited and randomly tested in three different conditions: without ENDS, wearing the Breathe Right(®) dilator strip and wearing the Master-aid Roll-flex(®) strip...
January 30, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28150270/circle-of-willis-variations-and-artery-diameter-measurements-in-the-turkish-population
#17
Ibrahim Önder Yeniçeri, Neşat Çullu, Mehmet Deveer, Emine Neşe Yeniçeri
BACKGROUND: The aim of this study was to evaluate the frequency of COW variations and the measurements of the COW vessel diameters in the Turkish population. MATERIALS AND METHODS: The patient population for this single-centre, retrospective study was formed of patients who had brain MRA. A total of 384 subjects were included in the study. The 3D TOF technique was used for MRA imaging to evaluate the anatomy of the COW. Variations in the COW were recorded. The diameter of the critical arteries of the COW were measured...
February 2, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28149076/knock-and-drill-technique-a-simple-tips-for-the-instrumentation-in-complex-craniovertebral-junction-anomalies-without-using-fluoroscopy
#18
Arun Srivastava, Jayesh Sardhara, Sanjay Behari, Sindgikar Pavaman, Jeena Joseph, Kuntal Das, Anant Mehrotra, Awadhesh K Jaiswal, Kamlesh Bhaishora
CONTEXT: Existence of complex variable bony and vertebral artery (VA) anomalies at craniovertebral junction (CVJ) in subset of complex CVJ anomalies demands individualized instrumentation policy and placing screws in each bone requires strategic preoperative planning and intraoperative skills. AIM: To evaluate the clinical accuracy of knock and drill (K and D) technique for the screw placement in complex CVJ anomalies. SETTINGS AND DESIGN: Prospective study and operative technical note...
January 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28145065/positional-relations-of-the-cervical-vagus-nerve-revisited
#19
Uwe Planitzer, Niels Hammer, Ingo Bechmann, Juliane Glätzner, Sabine Löffler, Robert Möbius, Bernhard N Tillmann, David Weise, Dirk Winkler
OBJECTIVES: The cervical part of the vagus nerve (CVN) has become an important target for stimulation therapy to treat epilepsy and psychiatric conditions. For this purpose, the CVN is visualized in the carotid sheath, assuming it to be localized dorsomedially between the carotid artery (CA) and the internal jugular vein (JV). The aim of our morphological study was therefore to revisit the CVN relationships to the CA and JV, hypothesizing it to have common variations to this classical textbook anatomy...
February 1, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28143859/replaced-right-and-left-hepatic-arteries-a-variation-in-origin-and-course
#20
Mohammed Asif, Leslie S Anewenah, Nisha Reddy, Farrukh A Khan
In ∼60% of cases, hepatic artery anatomy is of the normal variant. However, in 40% of cases, anomalies can exist. Preserving the hepatic blood supply is paramount in hepatobiliary procedures. We report an aberrant right hepatic artery coursing retroportally, with an aberrant left hepatic artery originating directly from the coeliac artery in a patient who underwent an elective pancreaticoduodenectomy (Whipple procedure).
January 31, 2017: BMJ Case Reports
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