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Anatomic variations

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https://www.readbyqxmd.com/read/28104754/how-does-passive-lengthening-change-the-architecture-of-the-human-medial-gastrocnemius-muscle
#1
Bart Bolsterlee, Arkiev D'Souza, Simon C Gandevia, Robert D Herbert
There are few comprehensive investigations of the changes in muscle architecture that accompany muscle contraction or change in muscle length in vivo. For this study, we measured changes in the three-dimensional architecture of the human medial gastrocnemius at the whole-muscle level, the fascicle level and the fiber level using anatomical MRI and diffusion tensor imaging (DTI). Data were obtained from eight subjects under relaxed conditions at three muscle lengths. At the whole muscle level, a 5.1% increase in muscle belly length resulted in a reduction in both muscle width (mean change -2...
January 19, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28103500/thoracoscopic-surgery-in-the-prone-position-for-esophageal-cancer-in-patients-with-situs-inversus-totalis-a-report-of-two-cases
#2
Toru Nakano, Takashi Kamei, Yu Onodera, Naoto Ujiie, Noriaki Ohuchi
INTRODUCTION: Situs inversus totalis (SIT) is a rare congenital condition characterized by a complete transposition of thoracic and abdominal organs. Here, we present two successful cases of left thoracoscopic esophagectomy in the prone position for SIT-associated esophageal cancer. PRESENTATION OF CASE: Our first case was of an 82-year-old man who underwent a left thoracoscopic esophagectomy in the prone position, followed by hand-assisted laparoscopic gastric mobilization...
January 6, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28101640/labia-minora-hypertrophy-causes-impact-on-women-s-health-and-treatment-options
#3
Caterina Gulia, Andrea Zangari, Vito Briganti, Zhoobin H Bateni, Alessandro Porrello, Roberto Piergentili
INTRODUCTION AND HYPOTHESIS: We provide a review of the literature about the onset and development of hypertrophy of the labia minora, together with some expert opinions on the appropriateness of labiaplasty. METHODS: We searched PubMed and used popular search engines, with a greater emphasis on the physiology and hormone-mediated metabolism of these structures, and less emphasis on their surgical treatment. RESULTS: We describe major embryological, cytological, and biochemical features of this anatomical part and summarize the clinical aspects of its hypertrophy, evaluating types of discomfort reported by women and the medical treatments available...
January 18, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28099265/observer-agreement-of-treatment-responses-on-planar-bone-scintigraphy-in-prostate-cancer-patients-importance-of-the-lesion-assessment-method
#4
Randi F Fonager, Helle D Zacho, Signe Albertsen, Joan Fledelius, June A Ejlersen, Mette H Christensen, Ramune Aleksyniene, José A Biurrun Manresa, Lars J Petersen
PURPOSE: The aim of this study was to assess observer agreement on the evaluation of treatment responses of bone metastases by bone scintigraphy (BS) using different scoring methods in prostate cancer patients. PATIENTS AND METHODS: Sixty-three paired BS from 55 patients were included. BS was performed before and after more than 12 weeks of anticancer treatment. A panel of experienced nuclear medicine physicians from several institutions evaluated treatment response using three different methods: (a) standard clinical assessment, (b) MD Anderson criteria, and (c) Prostate Cancer Working Group 2 (PCWG-2) criteria...
January 17, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28098054/long-term-esophageal-motility-changes-after-thyroidectomy-associations-with-aerodigestive-disorders
#5
G Scerrino, A Inviati, S Di Giovanni, N C Paladino, S Di Giovanni, N C Paladino, V Di Paola, C Raspanti, G I Melfa, F Cupido, S Mazzola, C Porrello, S Bonventre, G Gullotta
BACKGROUND: Patients undergoing thyroidectomy often complain aerodigestive disorders. In a previous study we showed the associations between voice impairment and proximal acid reflux, swallowing impairment and Upper Esophageal Sphyncter (UES) incoordination and the decrease in UES pressure in thirty-six patients observed before and soon afterwards uncomplicated thyroidectomy. This study investigated the state of post-thyroidectomy esophageal motility changes and its associations with these disorders after 18-24 months...
September 2017: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/28095506/a-comparison-of-the-corrected-intraocular-pressure-obtained-by-the-corvis-st-and-reichert-7cr-tonometers-in-glaucoma-patients
#6
Yoshitaka Nakao, Yoshiaki Kiuchi, Satoshi Okimoto
The purpose of the study was to investigate the accuracy of two corrected intraocular pressure (IOP) measurements by Corvis Scheimpflug Technology (CST)-IOPpachy and by corneal-compensated IOP (IOPcc) using the Reichert 7CR (7CR) tonometers. We also investigated the effects of corneal anatomical and structural parameters on the IOP measurements. The participants included 90 primary open-angle glaucoma patients. We assessed the IOP measurements, obtained by the CST, 7CR, and Goldmann applanation tonometer (GAT), using a paired t-test with Bonferroni correction, Bland-Altman plots, and multiple regression analyses...
2017: PloS One
https://www.readbyqxmd.com/read/28093049/efficient-variational-approach-to-multimodal-registration-of%C3%A2-anatomical%C3%A2-and%C3%A2-functional-intra-patient-tumorous-brain-data
#7
Alvar-Ginés Legaz-Aparicio, Rafael Verdú-Monedero, Jorge Larrey-Ruiz, Juan Morales-Sánchez, Fernando López-Mir, Valery Naranjo, Ángela Bernabéu
This paper addresses the functional localization of intra-patient images of the brain. Functional images of the brain (fMRI and PET) provide information about brain function and metabolism whereas anatomical images (MRI and CT) supply the localization of structures with high spatial resolution. The goal is to find the geometric correspondence between functional and anatomical images in order to complement and fuse the information provided by each imaging modality. The proposed approach is based on a variational formulation of the image registration problem in the frequency domain...
November 29, 2016: International Journal of Neural Systems
https://www.readbyqxmd.com/read/28091426/mri-based-detailed-evaluation-of-the-anatomy-of-the-human-coccyx-among-turkish-adults
#8
H Tetiker, M I Koşar, N Çullu, U Canbek, I Otağ, Y Taştemur
AIM: The human coccyx varies considerably in shape and size. The objective of this study was to investigate the morphology and morphometry of the coccyx on pelvic magnetic resonance imaging in asymptomatic individuals among Turkish adults. MATERIALS AND METHODS: This study was conducted retrospectively on the pelvic magnetic resonance images of 456 adult patients without a history of trauma in the coccyx region. The coccygeal vertebrae count, number of bone segments, and intercoccygeal and sacrococcygeal joint fusions were determined from the sagittal plane images...
February 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28086965/probabilistic-liver-atlas-construction
#9
Esther Dura, Juan Domingo, Guillermo Ayala, Luis Marti-Bonmati, E Goceri
BACKGROUND: Anatomical atlases are 3D volumes or shapes representing an organ or structure of the human body. They contain either the prototypical shape of the object of interest together with other shapes representing its statistical variations (statistical atlas) or a probability map of belonging to the object (probabilistic atlas). Probabilistic atlases are mostly built with simple estimations only involving the data at each spatial location. RESULTS: A new method for probabilistic atlas construction that uses a generalized linear model is proposed...
January 13, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28078731/rapid-automated-landmarking-for-morphometric-analysis-of-three-dimensional-facial-scans
#10
Mao Li, Joanne B Cole, Mange Manyama, Jacinda R Larson, Denise K Liberton, Sheri L Riccardi, Tracey M Ferrara, Stephanie A Santorico, Jordan J Bannister, Nils D Forkert, Richard A Spritz, Washington Mio, Benedikt Hallgrimsson
Automated phenotyping is essential for the creation of large, highly standardized datasets from anatomical imaging data. Such datasets can support large-scale studies of complex traits or clinical studies related to precision medicine or clinical trials. We have developed a method that generates three-dimensional landmark data that meet the requirements of standard geometric morphometric analyses. The method is robust and can be implemented without high-performance computing resources. We validated the method using both direct comparison to manual landmarking on the same individuals and also analyses of the variation patterns and outlier patterns in a large dataset of automated and manual landmark data...
January 12, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28078126/gastrointestinal-lymphoma-in-western-algeria-pattern-of-distribution-and-histological-subtypes-retrospective-study
#11
Soumia Zeggai, Noria Harir, Abdenacer Tou, Miloud Medjamia, Khaira Guenaoui
BACKGROUND: Primary gastrointestinal (GI) lymphomas (GIL) are uncommon diseases that can involve the whole GI tract. Considerable variation exists in the literature with respect to incidence of the various histological subtypes and sites of involvement. This study was undertaken to establish the anatomic distribution, histological subtypes and sites of GI lymphomas of patients from Western Algeria. METHODS: The case records of 58 consecutive patients with GIL diagnosed at the Pathologies Departments of Algerian west region (the Military Hospital of Oran city and the Central University Hospital of Sidi Bel Abbes city) from January 2006 to December 2013 were retrospectively evaluated for epidemiology and histopathology report...
December 2016: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28077627/a-feasibility-study-on-the-use-of-phantoms-with-statistical-lung-masses-for-determining-the-uncertainty-in-the-dose-absorbed-by-the-lung-from-broad-beams-of-incident-photons-and-neutrons
#12
Atiyeh Ebrahimi Khankook, Hashem Miri Hakimabad, Laleh Rafat Motavalli
Computational models of the human body have gradually become crucial in the evaluation of doses absorbed by organs. However, individuals may differ considerably in terms of organ size and shape. In this study, the authors sought to determine the energy-dependent standard deviations due to lung size of the dose absorbed by the lung during external photon and neutron beam exposures. One hundred lungs with different masses were prepared and located in an adult male International Commission on Radiological Protection (ICRP) reference phantom...
January 10, 2017: Journal of Radiation Research
https://www.readbyqxmd.com/read/28076015/us-and-mr-imaging-of-pectoralis-major-injuries
#13
Yauk K Lee, Matt R Skalski, Eric A White, Anderanik Tomasian, Diane D Phan, Dakshesh B Patel, George R Matcuk, Aaron J Schein
During the past 2 decades, the frequency of pectoralis major muscle injuries has increased in association with the increased popularity of bench press exercises. Injury of the pectoralis major can occur at the muscle origin, muscle belly, musculotendinous junction, intratendinous region, and/or humeral insertion-with or without bone avulsion. The extent of the tendon injury ranges from partial to complete tears. Treatment may be surgical or conservative, depending on the clinical scenario and anatomic characteristics of the injury...
January 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28073316/clinical-implications-of-the-anatomical-variation-of-deep-venous-thrombosis
#14
Ayman El-Menyar, Mohammad Asim, Gaby Jabbour, Hassan Al-Thani
Introduction Little is known about the anatomic variation and its implication in patients with lower limb deep venous thrombosis (DVT). We studied the clinical presentation, site of thrombosis and risk factors based on the anatomic distribution of lower limb DVT. Methods A retrospective analysis of clinically suspected DVT cases was conducted between 2008 and 2012. DVT was categorized by the location of the thrombosed segment and limb involved. The DVT anatomic segments were assessed according to left-to-right ratio, predisposing factors and clinical presentations...
January 1, 2017: Phlebology
https://www.readbyqxmd.com/read/28071632/primary-gastrointestinal-lymphomas-in-children-an-experience-of-12-years-from-a-tertiary-care-center-of-north-india
#15
S K Qadri, A Shah, N H Hamdani, K M Baba
BACKGROUND AND AIM: Lymphomas are among the dominant solid tumors in children and primary gastrointestinal lymphomas (PGILs), although rare, are the most common extranodal lymphomas and the most common malignancies affecting the gastrointestinal tract in children. This study was undertaken to analyze childhood PGIL with reference to clinical presentation, anatomic distribution, histopathologic, and immunohistochemical (IHC) characteristics. MATERIALS AND METHODS: In this 12 year combined retrospective and prospective descriptive study, all the cases of PGIL in children were selected according to Dawson's criteria...
April 2016: Indian Journal of Cancer
https://www.readbyqxmd.com/read/28070887/diversity-in-the-organization-of-elastin-bundles-and-intramembranous-muscles-in-bat-wings
#16
Jorn A Cheney, Justine J Allen, Sharon M Swartz
Unlike birds and insects, bats fly with wings composed of thin skin that envelops the bones of the forelimb and spans the area between the limbs, digits, and sometimes the tail. This skin is complex and unusual; it is thinner than typical mammalian skin and contains organized bundles of elastin and embedded skeletal muscles. These elements are likely responsible for controlling the shape of the wing during flight and contributing to the aerodynamic capabilities of bats. We examined the arrangement of two macroscopic architectural elements in bat wings, elastin bundles and wing membrane muscles, to assess the diversity in bat wing skin morphology...
January 10, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28066735/arthroscopic-approach-and-anatomy-of-the-hip
#17
Alessandro Aprato, Matteo Giachino, Alessandro Masse
BACKGROUND: Hip arthroscopy has gained popularity among the orthopedic community and a precise assessment of indications, techniques and results is constantly brought on. METHODS: In this chapter the principal standard entry portals for central and peripheral compartment are discussed. The description starts from the superficial landmarks for portals placement and continues with the deep layers. For each entry point an illustration of the main structures encountered is provided and the principal structures at risk for different portals are accurately examined...
July 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28066674/three-dimensional-computed-tomography-bronchography-and-angiography-in-the-preoperative-evaluation-of-thoracoscopic-segmentectomy-and-subsegmentectomy
#18
REVIEW
Wei-Bing Wu, Xin-Feng Xu, Wei Wen, Jing Xu, Quan Zhu, Xiang-Long Pan, Yang Xia, Liang Chen
Thoracoscopic pulmonary segmentectomy is technically meticulous due to the complicated anatomical variations of segmental bronchus and vessels. Currently three dimensional-computed tomography angiography (3D-CTA) could only meet the simple requirements of segmentectomy. Our center developed a software for reconstruction, "deepinsight", which could effectively solve some key technical problems. Preoperative three-dimensional computed tomography bronchography and angiography (3D-CTBA) could reveal the anatomical structures and improve the accuracy of operation...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28061520/esophageal-atresia-with-or-without-tracheoesophageal-fistula-ea-tef-association-of-different-ea-tef-subtypes-with-specific-co-occurring-congenital-anomalies-and-implications-for-diagnostic-workup
#19
Thomas Bogs, Nadine Zwink, Vera Chonitzki, Alice Hölscher, Thomas M Boemers, Oliver Münsterer, Ralf Kurz, Andreas Heydweiller, Marcus Pauly, Andreas Leutner, Benno M Ure, Martin Lacher, Oliver Johannes Deffaa, Holger Thiele, Soyhan Bagci, Ekkehart Jenetzky, Johannes Schumacher, Heiko Reutter
Background Esophageal atresia with or without tracheoesophageal fistula (EA/TEF) represents the most common developmental malformation of the upper digestive tract. It is classified into six subtypes according to the classification of Vogt, depending on anatomical variation of this malformation. Around 50% of the patients with EA/TEF present additional anomalies, which often influence, next to the EA/TEF subtype, the overall prognosis of EA/TEF newborns. Here, we investigated the association of the different EA/TEF subtypes with co-occurring congenital anomalies in EA/TEF patients and demonstrate their implications for postnatal diagnostic workup...
January 6, 2017: European Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28061358/prognostic-factors-of-oral-squamous-cell-carcinoma-in-young-patients-a-systematic-review
#20
REVIEW
Everton Freitas de Morais, Rodrigo Porpino Mafra, Amanda Katarinny Goes Gonzaga, Dyego Leandro Bezerra de Souza, Leão Pereira Pinto, Éricka Janine Dantas da Silveira
PURPOSE: The objective of this review was to identify clinical and pathologic factors related to the prognosis of oral squamous cell carcinoma in young patients. MATERIALS AND METHODS: We conducted a literature search of articles indexed in PubMed (MEDLINE), Scopus, and Science Direct. Prospective and retrospective cohort studies published in English, Portuguese, or Spanish were included. An age threshold of 45 years was established for the purpose of selection...
December 21, 2016: Journal of Oral and Maxillofacial Surgery
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