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variations of normal anatomy

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https://www.readbyqxmd.com/read/28495652/acute-efficacy-safety-and-long-term-clinical-outcomes-utilizing-the-second-generation-cryoballoon-for-pulmonary-vein-isolation-in-patients-with-a-left-common-pulmonary-vein-a-multicenter-study
#1
Christian-Hendrik Heeger, Verena Tscholl, Erik Wissner, Thomas Fink, Laura Rottner, Peter Wohlmuth, Barbara Bellmann, Mattias Roser, Shibu Mathew, Christian Sohns, Bruno Reißmann, Christine Lemeš, Tilman Maurer, Francesco Santoro, Johannes Riedl, Britta Goldmann, Ulf Landmesser, Feifan Ouyang, Karl-Heinz Kuck, Andreas Rillig, Andreas Metzner
BACKGROUND: Second-generation cryoballoon (CB2)-based pulmonary vein isolation (PVI) has demonstrated encouraging clinical results in the treatment of paroxysmal (PAF) and persistent atrial fibrillation (PersAF). However, the CB2 features a maximal diameter of 28mm and its adaptability to anatomical variations of the pulmonary veins (PVs) might be challenging. OBJECTIVE: To assess acute efficacy, safety and long-term clinical results of CB2-based PVI in patients with a left common PV (LCPV)...
May 8, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28494642/normal-anatomy-and-variations-in-the-confluence-of-sinuses-using-digital-subtraction-angiography
#2
Yaqin Cheng, William A Li, Xingjuan Fan, Xiaohua Li, Jian Chen, Yan Wu, Ran Meng, Xunming Ji
OBJECTIVES: The configuration of the confluence of sinuses differs not only between individuals, but also between the two brain hemispheres, making the anatomical classification of this region difficult. In this study, we evaluated the anatomy of the confluence of sinuses and ascertained the accuracy and usefulness of digital subtraction angiography (DSA) in the evaluation of cerebral veins. METHODS: Bilateral carotid and vertebral artery angiographies were performed in 500 adult patients to evaluate the anatomy of the confluence of sinuses and contributory venous sinuses...
June 2017: Neurological Research
https://www.readbyqxmd.com/read/28489166/anatomic-variations-of-hepatic-artery-a-study-in-479-liver-transplantations
#3
Olival Cirilo Lucena da Fonseca-Neto, Heloise Caroline de Souza Lima, Priscylla Rabelo, Paulo Sérgio Vieira de Melo, Américo Gusmão Amorim, Cláudio Moura Lacerda
Background: The incidence of anatomic variations of hepatic artery ranges from 20-50% in different series. Variations are especially important in the context of liver orthotopic transplantation, since, besides being an ideal opportunity for surgical anatomical study, their precise identification is crucial to the success of the procedure. Aim: To identify the anatomical variations in the hepatic arterial system in hepatic transplantation. Methods: 479 medical records of transplanted adult patients in the 13-year period were retrospectively analyzed, and collected data on hepatic arterial anatomy of the deceased donor...
January 2017: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
https://www.readbyqxmd.com/read/28457233/introduction-to-the-congenital-heart-defects-anatomy-of-the-conduction-system
#4
REVIEW
Jeremy P Moore, Jamil A Aboulhosn
The position and course of the conduction system in congenital heart disease are intricately tied to the underlying congenital malformation. Although only subtle differences exist between the anatomy of the conduction axis for simple congenital heart lesions and normal anatomy, almost every patient with congenital heart disease harbors some important anatomic variation. This article summarizes the body of literature by retaining original classical concepts and by attempting to translate the available knowledge into useful points for the congenital heart disease specialist...
June 2017: Cardiac Electrophysiology Clinics
https://www.readbyqxmd.com/read/28447058/development-of-lymph-node-dissection-in-laparoscopic-gastrectomy-safety-and-technical-tips
#5
REVIEW
Ru-Hong Tu, Ping Li, Jian-Wei Xie, Jia-Bin Wang, Jian-Xian Lin, Jun Lu, Qi-Yue Chen, Long-Long Cao, Mi Lin, Chang-Ming Huang, Chao-Hui Zheng
With the accumulation of experience in laparoscopic radical gastrectomy and the progress in surgical instruments, the laparoscopic technique has been widely applied in gastric cancer. Combining previous reports with data from our center, we believe that laparoscopic surgery for gastric cancer is safe and feasible, and its surgery-related complications have an incidence that is not higher, and perhaps even lower, than that of traditional laparotomy. However, the stomach has many anatomical levels and an abundant blood supply; additionally, laparoscopic surgery is relatively difficult...
2017: Translational Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28390188/prediction-of-normal-bone-anatomy-for-the-planning-of-corrective-osteotomies-of-malunited-forearm-bones-using-a-three-dimensional-statistical-shape-model
#6
Flavien Mauler, Christoph Langguth, Andreas Schweizer, Lazaros Vlachopoulos, Tobias Gass, Marcel Lüthi, Philipp Fürnstahl
Corrective osteotomies of the forearm based on 3D computer simulation using contralateral anatomy as a reconstruction template is an approved method. Limitations are existing considerable differences between left and right forearms, and that a healthy contralateral anatomy is required. We evaluated if a computer model, not relying on the contralateral anatomy, may replace the current method by predicting the pre-traumatic healthy shape. A statistical shape model (SSM) was generated from a set of 59 CT scans of healthy forearms, encoding the normal anatomical variations...
April 8, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28389821/variations-of-anatomy-on-mri-of-the-first-extensor-compartment-of-the-wrist-and-association-with-dequervain-tenosynovitis
#7
Connie Y Chang, Arvin B Kheterpal, Joao Rafael Terneria Vicentini, Ambrose J Huang
OBJECTIVE: To study anatomical variations on MRI of the first extensor compartment of the wrist in DeQuervain tenosynovitis (DQT). MATERIALS AND METHODS: A retrospective search for DQT patients yielded 47 subjects (51 ± 15 years, 36 female, 11 male). The age-matched control group (normal first extensor compartment) was 49 ± 15 years (29 female, 18 male). Two independent readers reviewed: the number of abductor pollicis longus (APL) tendon slips, tendon sheath septations (compartmentalization), and APL and EPB cross-sectional area (CSA) at the radial styloid...
April 7, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28384848/surgical-implications-of-portal-vein-variations-and-liver-segmentations-a-recent-update
#8
REVIEW
Showkathali Iqbal, Raiz Iqbal, Faiz Iqbal
The Couinaud's liver segmentation is based on the identification of portal vein bifurcation and origin of hepatic veins. It is widely used clinically, because it is better suited for surgery and is more accurate in localizing and monitoring various intra parenchymal lesions. According to standard anatomy, the portal vein bifurcates into right and left branches; the left vein drains segment II, III and IV and the right vein divides into two secondary branches - the anterior portal vein drains segments V and VIII, and the posterior drains segments VI and VII...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28365266/effect-of-coronary-anatomy-and-hydrostatic-pressure-on-intracoronary-indices-of-stenosis%C3%A2-severity
#9
Tobias Härle, Mareike Luz, Sven Meyer, Kay Kronberg, Britta Nickau, Javier Escaned, Justin Davies, Albrecht Elsässer
OBJECTIVES: The authors sought to analyze height differences within the coronary artery tree in patients in a supine position and to quantify the impact of hydrostatic pressure on intracoronary pressure measurements in vitro. BACKGROUND: Although pressure equalization of the pressure sensor and the systemic pressure at the catheter tip is mandatory in intracoronary pressure measurements, subsequent measurements may be influenced by hydrostatic pressure related to the coronary anatomy in the supine position...
March 24, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28353299/an-unusual-case-of-accessory-head-of-coracobrachialis-muscle-involving-lateral-cord-of-brachial-plexus-and-its-clinical-significance
#10
Silvio Antonio Garbelotti, Sérgio Ricardo Marques, Paulo Ricardo Rocha, Valdemir Rodrigues Pereira, Luis Otavio Carvalho de Moraes
Knowledge of anatomical variations in the peripheral nervous system is key in the interpretation of unusual clinical signs or during physical or diagnostic imaging. This case study is a description of an anatomical variation between the coracobrachialis muscle and brachial plexus. In a routine dissection in the human anatomy laboratory, we were faced with an anatomical variation in the coracobrachialis muscle, observed in the upper right limb of a male cadaver. The coracobrachialis muscle had a common origin at the apex of the coracoid process and then divided into two heads...
March 29, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28337006/challenges-in-x-ray-diagnosis-a-review-of-referrals-for-specialist-opinion
#11
M Dave, K Horner
The aim of this study was to determine the common reasons why a dental professional might request a second opinion on a dental radiograph from a Dental and Maxillofacial (DMF) radiologist. The study was a retrospective analysis of consecutive referrals for an opinion received by post or email by one DMF radiologist based in a UK dental hospital. The study period was from March 2009 to November 2015. Referrals came from a mixture of sources: mainly from general dental practitioners and specialists working in primary care, but with some referrals from hospital-based practitioners...
March 24, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28315152/bilateral-robotic-transabdominal-adrenalectomy-in-a-patient-with-intestinal-malrotation
#12
Zuliang Feng, Carmen C Solórzano
Bilateral adrenalectomy is the preferred surgical approach for patients with failed treatments for pituitary-based Cushing's syndrome. Intestinal malrotation (IM) is a rare congenital anatomic variant that rarely affects adults. The abnormal abdominal anatomy is concerning to surgeons planning elective procedures in such patients. Here, we describe a bilateral robotic transabdominal adrenalectomy (RTA) in a patient with IM. A 29-year-old female presented with refractory pituitary-based Cushing's syndrome and was found to have IM on preoperative CT scan...
March 17, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28314908/anatomy-and-aesthetics-of-the-labia-minora-the-ideal-vulva
#13
REVIEW
C Clerico, A Lari, A Mojallal, F Boucher
Female genital cosmetic surgery is becoming more and more widespread both in the field of plastic and gynaecological surgery. The increased demand for vulvar surgery is spurred by the belief that the vulva is abnormal in appearance. What is normal in terms of labial anatomy? Labia minora enlargement or hypertrophy remains a clinical diagnosis which is poorly defined as it could be considered a variation of the normal anatomy. Enlarged labia minora can cause functional, aesthetic and psychosocial problems. In reality, given the wide variety of vulvar morphology among people, it is a very subjective issue to define the "normal" vulva...
March 10, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28297184/the-human-pelvis-variation-in-structure-and-function-during-gait
#14
Cara L Lewis, Natalie M Laudicina, Anne Khuu, Kari L Loverro
The shift to habitual bipedalism 4-6 million years ago in the hominin lineage created a morphologically and functionally different human pelvis compared to our closest living relatives, the chimpanzees. Evolutionary changes to the shape of the pelvis were necessary for the transition to habitual bipedalism in humans. These changes in the bony anatomy resulted in an altered role of muscle function, influencing bipedal gait. Additionally, there are normal sex-specific variations in the pelvis as well as abnormal variations in the acetabulum...
April 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28291931/investigation-of-dosimetric-variations-of-liver-radiotherapy-using-deformable-registration-of-planning-ct-and-cone-beam-ct
#15
Pu Huang, Gang Yu, Jinhu Chen, Changsheng Ma, Shaohua Qin, Yong Yin, Yueqiang Liang, Hongsheng Li, Dengwang Li
Many patients with technically unresectable or medically inoperable hepatocellular carcinoma (HCC) had hepatic anatomy variations as a result of interfraction deformation during fractionated radiotherapy. We conducted this retrospective study to investigate interfractional normal liver dosimetric consequences via reconstructing weekly dose in HCC patients. Twenty-three patients with HCC received conventional fractionated three-dimensional conformal radiation therapy (3DCRT) were enrolled in this retrospective investigation...
January 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28286625/radiographic-evaluation-of-common-pediatric-elbow-injuries
#16
REVIEW
Steven F DeFroda, Heather Hansen, Joseph A Gil, Ashraf H Hawari, Aristides I Cruz
Normal variations in anatomy in the skeletally immature patient may be mistaken for fracture or injury due to the presence of secondary centers of ossification. Variations in imaging exist from patient to patient based on sex, age, and may even vary from one extremity to the other on the same patient. Despite differences in the appearance of the bony anatomy of the elbow there are certain landmarks and relationships, which can help, distinguish normal from abnormal. We review common radiographic parameters and pitfalls associated in the evaluation of pediatric elbow imaging...
February 20, 2017: Orthopedic Reviews
https://www.readbyqxmd.com/read/28270883/the-main-anatomic-variations-of-the-hepatic-artery-and-their-importance-in-surgical-practice-review-of-the-literature
#17
REVIEW
George Noussios, Ioannis Dimitriou, Iosif Chatzis, Anastasios Katsourakis
Anatomical variations of the hepatic artery are important in the planning and performance of abdominal surgical procedures. Normal hepatic anatomy occurs in approximately 80% of cases, for the remaining 20% multiple variations have been described. The purpose of this study was to review the existing literature on the hepatic anatomy and to stress out its importance in surgical practice. Two main databases were searched for eligible articles during the period 2000 - 2015, and results concerning more than 19,000 patients were included in the study...
April 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28255386/variation-in-uterus-position-prior-to-brachytherapy-of-the-cervix-a-case-report
#18
M T Georgescu, R Anghel
Rationale: brachytherapy is administered in the treatment of patients with locally advanced cervical cancer following chemoradiotherapy. Lack of local anatomy evaluation prior to this procedure might lead to the selection of an inappropriate brachytherapy applicator, increasing the risk of side effects (e.g. uterus perforation, painful procedure ...). Objective: To assess the movement of the uterus and cervix prior to brachytherapy in patients with gynecological cancer, in order to select the proper type of brachytherapy applicator...
January 2017: Journal of Medicine and Life
https://www.readbyqxmd.com/read/28250637/analysis-of-the-spinal-nerve-roots-in-relation-to-the-adjacent-vertebral-bodies-with-respect-to-a-posterolateral-vertebral-body-replacement-procedure
#19
Waleed Awwad, Jonathan Bourget-Murray, Nadil Zeiadin, Juan P Mejia, Thomas Steffen, Abdulrahman D Algarni, Khalid Alsaleh, Jean Ouellet, Michael Weber, Peter F Jarzem
OBJECTIVE: This study aims to improve the understanding of the anatomic variations along the thoracic and lumbar spine encountered during an all-posterior vertebrectomy, and reconstruction procedure. This information will help improve our understanding of human spine anatomy and will allow better planning for a vertebral body replacement (VBR) through either a transpedicular or costotransversectomy approach. SUMMARY OF BACKGROUND DATA: The major challenge to a total posterior approach vertebrectomy and VBR in the thoracolumbar spine lies in the preservation of important neural structures...
January 2017: Journal of Craniovertebral Junction and Spine
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
#20
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)...
April 2017: Journal of Endodontics
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