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https://www.readbyqxmd.com/read/30546283/prevalence-of-pathological-brain-lesions-in-girls-with-central-precocious-puberty-possible-overestimation
#1
Jong Seo Yoon, Cheol Hwan So, Hae Sang Lee, Jung Sub Lim, Jin Soon Hwang
Background: Brain magnetic resonance imaging (MRI) is routinely performed to identify brain lesions in girls with central precocious puberty (CPP). We aimed to investigate the prevalence and type of brain lesions among Korean girls with CPP and evaluate the need for routine brain MRI examinations. Methods: This retrospective cross-sectional study evaluated data on 3,528 girls diagnosed with CPP from April 2003 to December 2016, and identified 317 girls who underwent sellar MRI...
December 17, 2018: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/30522482/short-and-long-term-reproducibility-of-diffusion-weighted-magnetic-resonance-imaging-of-lower-extremity-musculature-in-asymptomatic-individuals-and-a-comparison-to-individuals-with-spinal-cord-injury
#2
Jacob G McPherson, Andrew C Smith, Daniel A Duben, Katie L McMahon, Marie Wasielewski, Todd B Parrish, James M Elliott
BACKGROUND: Diffusion-weighted magnetic resonance imaging (DW-MRI) of skeletal muscle has the potential to be a sensitive diagnostic and/or prognostic tool in complex, enigmatic neuromusculoskeletal conditions such as spinal cord injury and whiplash associated disorder. However, the reliability and reproducibility of clinically accessible DW-MRI parameters in skeletal muscle remains incompletely characterized - even in individuals without neuromusculoskeletal injury - and these parameters have yet to be characterized for many clinical populations...
December 6, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/30516651/elite-rowers-demonstrate-consistent-patterns-of-hip-cartilage-damage-compared-with-matched-controls-a-t2-mapping-study
#3
Bernd Bittersohl, Chiara Benedikter, Alexander Franz, Tobias Hesper, Christoph Schleich, Gerald Antoch, Harish S Hosalkar, Rüdiger Krauspe, Christoph Zilkens
BACKGROUND: Rowing exposes the femoral head and acetabulum to high levels of repetitive abutment motion and axial loading that may put elite athletes at an increased risk for developing early hip osteoarthritis. QUESTIONS/PURPOSES: Do elite rowers demonstrate characteristic hip cartilage lesions on T2 MRI sequences compared with asymptomatic individuals who do not row? METHODS: This study included 20 asymptomatic rowers (mean age, 23 ± 3 years; nine females, 11 males) who had a minimum of 5 years of intensive (≥ 12 hours/week) training...
November 27, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/30488255/previous-chronic-symptomatic-and-asymptomatic-cerebral-hemorrhage-in-patients-with-acute-ischemic-stroke
#4
Ge-Fei Li, Yi-Lan Wu, Shuo Wang, Yan-Hui Shi, Rong Zhao, Feng-Di Liu, Yi-Sheng Liu, Mei-Ting Zhuang, Ying Zhao, Qi Sun, Guo-Hong Cui, Jian-Ren Liu
PURPOSE: Identifying previous chronic cerebral hemorrhage (PCH), especially asymptomatic cases in patients with ischemic stroke, is essential for proper antithrombotic management. The study aimed to further clarify the prevalence of PCH and the associated factors in patients with acute ischemic stroke using multi-modal neuroimaging including susceptibility-weighted MR imaging (SWI). METHODS: This was a retrospective cross-sectional study of 382 patients with acute ischemic stroke...
November 28, 2018: Neuroradiology
https://www.readbyqxmd.com/read/30478117/associations-of-lifestyle-and-vascular-risk-factors-with-alzheimer-s-brain-biomarker-changes-during-middle-age-a-3-year-longitudinal-study-in-the-broader-new-york-city-area
#5
Michelle J Walters, Joanna Sterling, Crystal Quinn, Christine Ganzer, Ricardo S Osorio, Randolph D Andrews, Dawn C Matthews, Shankar Vallabhajosula, Mony J de Leon, Richard S Isaacson, Lisa Mosconi
OBJECTIVE: To investigate the associations between lifestyle and vascular risk factors and changes in Alzheimer's disease (AD) biomarkers (beta-amyloid load via 11 C-PiB PET, glucose metabolism via 18 F-FDG PET and neurodegeneration via structural MRI) and global cognition in middle-aged asymptomatic participants at risk for AD. DESIGN: Prospective, longitudinal. SETTING: The study was conducted at New York University Langone/Weill Cornell Medical Centres in New York City...
November 25, 2018: BMJ Open
https://www.readbyqxmd.com/read/30467245/potentially-serious-incidental-findings-on-brain-and-body-magnetic-resonance-imaging-of-apparently-asymptomatic-adults-systematic-review-and-meta-analysis
#6
Lorna M Gibson, Laura Paul, Francesca M Chappell, Malcolm Macleod, William N Whiteley, Rustam Al-Shahi Salman, Joanna M Wardlaw, Cathie L M Sudlow
OBJECTIVES: To determine prevalence and types of potentially serious incidental findings on magnetic resonance imaging (MRI) in apparently asymptomatic adults, describe factors associated with potentially serious incidental findings, and summarise information on follow-up and final diagnoses. DESIGN: Systematic review and meta-analyses. DATA SOURCES: Citation searches of relevant articles and authors' files in Medline and Embase (from inception to 25 April 2017)...
November 22, 2018: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/30456035/trigeminal-nerve-schwannoma-of-the-cerebellopontine-angle
#7
Maria Peris-Celda, Christopher S Graffeo, Avital Perry, Lucas P Carlstrom, Michael J Link
Introduction  Large and even moderate sized, extra-axial cerebellopontine angle (CPA) tumors may fill this restricted space and distort the regional anatomy. It may be difficult to determine even with high resolution magnetic resonance imaging (MRI) if the tumor is dural-based, or what the nerve of origin is if a schwannoma. While clinical history and exam are helpful, they are not unequivocal, particularly since many patients present with a myriad of symptoms, or conversely an incidental finding. We present an atypical appearing, asymptomatic CPA tumor, ultimately identified at surgery to be a trigeminal schwannoma...
December 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/30454692/3t-mri-study-discloses-high-intrafamilial-variability-in-cadasil-due-to-a-novel-notch3-mutation
#8
Roberta La Piana, Ilana R Leppert, G Bruce Pike, Sylvain Lanthier, Bernard Brais, Donatella Tampieri
In order to evaluate the usefulness of presymptomatic MRI, we performed 3T brain MRI and Sanger gene sequencing in a proband with suspected but not confirmed CADASIL and her apparently asymptomatic father. The 35-year-old proband presented with migraine with visual aura. Brain MRI showed diffuse leukoencephalopathy, suggesting CADASIL. NOTCH3 gene sequencing (exons 3-6) was negative. Family history was unclear. The MRI study of the father documented severe, diffuse leukoencephalopathy, with involvement of the temporal poles and external capsules (not observed in the proband), and lacunar infarcts in the absence of cardiac disease or risk factors...
December 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/30447856/mri-findings-in-pediatric-neuromyelitis-optica-spectrum-disorder-with-mog-antibody-four-cases-and-review-of-the-literature
#9
Azusa Ikeda, Yoshihiro Watanabe, Hikari Kaba, Kimihiko Kaneko, Toshiyuki Takahashi, Saoko Takeshita
BACKGROUND: Myelin oligodendrocyte glycoprotein antibodies (MOG Abs) are frequently detected in pediatric acquired demyelinating syndrome (ADS), and MOG-Ab-positive ADS differs from multiple sclerosis (MS) and aquaporin-4 (AQP4)-Ab-positive neuromyelitis optica spectrum disorder (NMOSD) in terms of age distribution, therapeutic response, and prognosis. METHODS: Based on medical records, we retrospectively evaluated patients with MOG-Ab-positive NMOSD treated in the acute phase who were followed up in the chronic phase at our hospital from January 2011 to December 2017...
November 14, 2018: Brain & Development
https://www.readbyqxmd.com/read/30444756/acetabular-labral-tears-are-common-in-asymptomatic-contralateral-hips-with-femoroacetabular-impingement
#10
Hamed Vahedi, Arash Aalirezaie, Ibrahim Azboy, Tanine Daryoush, Alisina Shahi, Javad Parvizi
BACKGROUND: The number of patients undergoing hip arthroscopy for labral tears has increased, but labral tears are sometimes seen in asymptomatic patients with femoroacetabular impingement (FAI). The frequency of this finding, however, has not been well characterized nor is the proportion of patients with previously asymptomatic labral tears who may later become symptomatic. QUESTIONS/PURPOSES: The purpose of this study was to determine (1) the prevalence of labral tears and other intraarticular pathology in the asymptomatic contralateral hip of patients undergoing surgery for symptomatic FAI; (2) the likelihood that the asymptomatic hip had become symptomatic at latest followup; and (3) any association between MRI findings and age, sex, and body mass index (BMI) in both symptomatic and asymptomatic sides...
November 5, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/30425044/mri-bone-marrow-oedema-precedes-lumbar-bone-stress-injury-diagnosis-in-junior-elite-cricket-fast-bowlers
#11
Alex Kountouris, Kevin Sims, David Beakley, Anna E Saw, John Orchard, Andrew Rotstein, Jill L Cook
OBJECTIVES: Lumbar bone stress injury ('bone stress injury') is common in junior fast bowlers. The repetitive loading of cricket fast bowling may cause bone marrow oedema (BMO), detectable on MRI, before the bowler suffers from symptomatic bone stress injury. We investigated the temporal relationship between BMO, bone stress injury, along with bowling workload correlates, in elite junior fast bowlers throughout a cricket season. METHODS: 65 junior fast bowlers were prospectively monitored for one 8-month cricket season...
November 13, 2018: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/30416964/magnetic-resonance-imaging-features-for-the-differential-diagnosis-of-local-recurrence-of-bone-sarcoma-after-prosthesis-replacement
#12
Le Qin, Qiyuan Bao, Jie Chen, Lianjun Du, Fuhua Yan, Yong Lu, Caixia Fu, Weibin Zhang, Yuhui Shen
Objective: To explore the imaging features of local recurrences (LRs) based on magnetic resonance imaging (MRI) after oncological orthopaedic surgery with prosthesis reconstruction. Methods: A total of 78 cases totalling 157 scans were retrospectively reviewed. Patients with nodule/mass-like signals were retrospectively classified into LR, infectious pseudotumour, and asymptomatic pseudotumour according to clinicopathological data. LRs were histologically confirmed, and the patients without recurrences were followed up for at least 2 years...
October 2018: Journal of Orthopaedic Translation
https://www.readbyqxmd.com/read/30407974/headache-chiari-i-malformation-and-foramen-magnum-decompression
#13
Adam M Olszewski, Mark R Proctor
PURPOSE OF REVIEW: With increasing use of MRI, more patients are being diagnosed with Chiari I malformation (CM1), many of whom are asymptomatic. When symptoms are present, headache is the most frequent presenting feature, although symptoms can be variable. The purpose of this review is to help primary care clinicians better understand the relationship between an individual's presenting symptoms and the presence of radiographic CM1, and to describe the expected outcomes for patients who undergo decompression surgery...
December 2018: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/30375504/utility-of-oblique-sagittal-reformatted-and-three-dimensional-surface-reconstruction-computed-tomography-in-foraminal-stenosis-decompression
#14
Masahito Oshina, Yasushi Oshima, Sakae Tanaka, Lee A Tan, Xudong Josh Li, Alexander Tuchman, K Daniel Riew
Determining the responsible level of cervical radiculopathy can be difficult. Because asymptomatic findings are common in cervical radiculopathy, diagnoses based on imaging studies can be inaccurate. Therefore, we investigated whether the application of oblique sagittal reformatted computed tomography (oblique sagittal CT) and three-dimensional surface reconstruction CT (3DCT) affects surgical plans for patients with cervical foraminal stenosis and whether it assists diagnosis of foraminal stenosis. Accordingly, four reviewers, with office notes, observed the CT and magnetic resonance imaging (MRI) images of 18 patients undergoing surgical treatment for cervical radiculopathy...
October 30, 2018: Scientific Reports
https://www.readbyqxmd.com/read/30373896/rare-extraspinal-cause-of-acute-lumbar-radiculopathy
#15
Vinicius Tieppo Francio, Brandon Barndt, Justin B Schappell, Travis Allen, Chris Towery, Saeid Davani
A 60-year-old man presented to an outpatient pain management clinic with antalgic gait and left lower extremity (LLE) radiculopathy from an unknown aetiology. A lumbar MRI revealed minimal disc protrusion at L3 and a partially visualised left-sided kidney abnormality. Abdominal and pelvic CT demonstrated severe hydronephrosis of the left kidney compressing the left psoas major. The patient was immediately referred to an outside hospital for nephrology workup, and following nephrostomy tube, his radicular pain resolved...
October 28, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/30358915/peri-lead-edema-after-dbs-surgery-for-parkinson-s-disease-a-prospective-mri-study
#16
Linda Borellini, Gianluca Ardolino, Giorgio Carrabba, Marco Locatelli, Paolo Rampini, Sara Sbaraini, Elisa Scola, Sabrina Avignone, Fabio Triulzi, Sergio Barbieri, Filippo Cogiamanian
OBJECTIVE: to define the prevalence and the characteristics of peri-electrode edema in a prospective cohort of patients undergoing deep brain stimulation (DBS) surgery and to correlate it with clinical findings. METHODS: we performed brain MRI between 7 and 20 days after surgery in 19 consecutive patients undergoing DBS surgery for Parkinson's disease. The T2-weighted hyperintensity surrounding DBS leads was characterized and quantified. Any evidence of bleeding around the lead was also evaluated...
October 25, 2018: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/30349336/tuberculosis-of-the-parotid-lymph-nodes-clinical-and-imaging-features
#17
Dan Zhang, Xiaojiao Li, Hua Xiong, Chao Yang, Fajin Lv, Xianlong Huang, Qi Li, Zhuoyue Tang, Tianyou Luo
Objectives: To characterize clinical, computed tomography (CT) and magnetic resonance imaging (MRI) features of tuberculosis (TB) of the parotid nodes. Materials and methods: CT (n=21) and MR (n=7) images, and clinical data from 25 patients with TB of the parotid nodes were retrospectively analyzed by two experienced radiologists who reached consensus. Results: Younger patients (aged <50 years) accounted for 72%. Eighty percent of patients were asymptomatic, and had no history of TB exposure...
2018: Infection and Drug Resistance
https://www.readbyqxmd.com/read/30340804/effectiveness-of-ultrasonography-screening-and-risk-factor-analysis-of-capitellar-osteochondritis-dissecans-in-adolescent-baseball-players
#18
Tsung-Hsun Yang, Yan-Yuh Lee, Chung-Cheng Huang, Yu-Chi Huang, Po-Cheng Chen, Chia-Hao Hsu, Lin-Yi Wang, Wen-Yi Chou
BACKGROUND: Capitellar osteochondritis dissecans (COCD) is a common elbow injury in young baseball athletes. It may be asymptomatic at the early stage and may progress if left untreated. This study investigated the effectiveness of ultrasonography (US) screening for COCD in adolescent baseball players and identified risk factors of COCD. METHODS: A cross-sectional analysis study was conducted among baseball athletes aged 12 to 18 years. US screening of the throwing elbow was performed in all participants, and additional magnetic resonance imaging (MRI) was arranged for those with abnormal screening results...
November 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/30324623/abnormal-temporal-lobe-morphology-in-asymptomatic-relatives-of-patients-with-hippocampal-sclerosis-a-replication-study
#19
Siti Nurbaya Yaakub, Gareth J Barker, Sarah J Carr, Eugenio Abela, Michalis Koutroumanidis, Robert D C Elwes, Mark P Richardson
We investigated gray and white matter morphology in patients with mesial temporal lobe epilepsy with hippocampal sclerosis (mTLE+HS) and first-degree asymptomatic relatives of patients with mTLE+HS. Using T1-weighted magnetic resonance imaging (MRI), we sought to replicate previously reported findings of structural surface abnormalities of the anterior temporal lobe in asymptomatic relatives of patients with mTLE+HS in an independent cohort. We performed whole-brain MRI in 19 patients with mTLE+HS, 14 first-degree asymptomatic relatives of mTLE+HS patients, and 32 healthy control participants...
October 15, 2018: Epilepsia
https://www.readbyqxmd.com/read/30318790/pincer-type-mri-morphology-seen-in-over-a-third-of-asymptomatic-healthy-volunteers-without-femoroacetabular-impingement
#20
Susanne Bensler, Tobias J Dietrich, Veronika Zubler, Christian W A Pfirrmann, Reto Sutter
BACKGROUND: In daily routine, pincer femoroacetabular impingement (FAI) findings are often seen without a clinical diagnosis of pincer FAI. PURPOSE: To assess the presence of pincer FAI MRI findings in asymptomatic volunteers with negative impingement test versus patients with clinically confirmed FAI. STUDY TYPE: Case-control study. POPULATION: Sixty-three asymptomatic volunteers and 63 matched patients with FAI were included...
October 14, 2018: Journal of Magnetic Resonance Imaging: JMRI
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