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Radiology and imaging

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https://www.readbyqxmd.com/read/29679809/colonic-ischemia-mimicking-obstruction-due-to-sigmoid-colon-cancer-a-case-report
#1
Jiro Kimura, Alan Kawarai Lefor, Tadao Kubota
INTRODUCTION: Colonic ischemia is challenging to diagnose preoperatively. We present a patient with colonic ischemia, initially considered to have colonic obstruction. We review the history, physical findings, imaging, operative documents and postoperative diagnosis of this patient with an atypical presentation of colonic ischemia. PRESENTATION OF CASE: A 74-year old female presented with dyspnea on exertion and melena. A tumor in the sigmoid colon was identified by colonoscopy and biopsy showed adenocarcinoma...
April 16, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29679780/diagnostic-accuracy-of-mdct-in-differentiating-gallbladder-cancer-from-acute-and-xanthogranulomatous-cholecystitis
#2
Ashish P Wasnik, Mathew S Davenport, Ravi K Kaza, William J Weadock, Aaron Udager, Nahid Keshavarzi, Bin Nan, Katherine E Maturen
OBJECTIVE: To determine the diagnostic accuracy of multi-detector CT (MDCT) for differentiating gallbladder cancer from acute and xanthogranulomatous cholecystitis using previously described imaging features. METHODS: In this IRB approved HIPAA-compliant retrospective cohort study, contrast-enhanced MDCT of histologically confirmed acute cholecystitis (n = 17), xanthogranulomatous cholecystitis (n = 25), and gallbladder cancer (n = 18) were reviewed independently by three abdominal radiologists blinded to outcome...
April 14, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29679738/the-auricular-cartilage-graft-used-as-interpositional-material-for-disc-replacement-after-failed-tmj-operative-arthroscopy
#3
Mario Fernando Muñoz-Guerra, Francisco José Rodríguez-Campo, Manuel Fernández-Domínguez
OBJECTIVES: The aim of this study was to evaluate the preoperative and 2-years postoperative clinical and radiological findings in a group of patients after temporomandibular joint discectomy and interpositional autogenous auricular cartilage graft. MATERIALS AND METHODS: The technique involved a disc removal, condylar remodeling and fixation of the graft to the fossa-eminence region. Preoperative and 2-years postoperative clinical findings and magnetic resonance features were evaluated in a group of 13 patients (fourteen joints)...
April 18, 2018: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29679728/magnetic-resonance-imaging-of-the-lumbar-spine-determining-clinical-impact-and-potential-harm-from-overuse
#4
Nathan M Wnuk, Tarik K Alkasab, Daniel I Rosenthal
BACKGROUND: Lumbar spine MRI is frequently said to be "overused" in the evaluation of low-back pain, yet data concerning the extent of overuse and on potential harmful effects are lacking. PURPOSE: To determine the proportion of examinations with a detectable impact on patient care (actionable outcomes). STUDY DESIGN: Retrospective cohort study PATIENT SAMPLE: 5,365 outpatient lumbar spine MR examinations OUTCOME MEASURES: Actionable outcomes included: 1) findings leading to an intervention making use of anatomical information such as surgery; 2) new diagnoses of cancer, infection, or fracture; or 3) following known lumbar spine pathology...
April 18, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29679491/ionizing-radiation-induced-acoustics-for-radiotherapy-and-diagnostic-radiology-applications
#5
Susannah Hickling, Liangzhong Xiang, Kevin C Jones, Katia Parodi, Walter Assmann, Stephen Avery, Maritza Hobson, Issam El Naqa
Acoustic waves are induced via the thermoacoustic effect in objects exposed to a pulsed beam of ionizing radiation. This phenomenon has interesting potential applications in both radiotherapy dosimetry and treatment guidance as well as low dose radiological imaging. After initial work in the field in the 1980s and early 1990s, little research was done until 2013 when interest was rejuvenated, spurred on by technological advances in ultrasound transducers and the increasing complexity of radiotherapy delivery systems...
April 21, 2018: Medical Physics
https://www.readbyqxmd.com/read/29679454/primary-lymphoepthelial-carcinoma-of-the-parotid-gland-pictorial-review-of-a-rare-entity
#6
Arani Halder, Jennifer Sommerville, Mitesh Gandhi
Lymphoepithelial carcinoma (LEC) is a rare malignancy of the salivary gland arising from the parotid in 80% of cases. LEC is indistinguishable histologically from more common non-keratinising undifferentiated nasopharyngeal carcinoma (NPC). Up to 40% of patients with primary LEC present with a cervical metastasis and histological assessment of the primary lesion or nodal metastasis may be reported as NPC. The absence of a nasopharyngeal lesion on imaging and endoscopic assessment together with a parotid mass strengthens the case for a LEC...
April 20, 2018: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/29679214/improvement-of-radiology-reporting-in-a-clinical-cancer-network-impact-of-an-optimised-multidisciplinary-workflow
#7
A W Olthof, J Borstlap, W W Roeloffzen, P M C Callenbach, P M A van Ooijen
PURPOSE: To assess the effectiveness of implementing a quality improvement project in a clinical cancer network directed at the response assessment of oncology patients according to RECIST-criteria. METHODS: Requests and reports of computed tomography (CT) studies from before (n = 103) and after (n = 112) implementation of interventions were compared. The interventions consisted of: a multidisciplinary working agreement with a clearly described workflow; subspecialisation of radiologists; adaptation of the Picture Archiving and Communication System (PACS); structured reporting...
April 20, 2018: European Radiology
https://www.readbyqxmd.com/read/29679211/surgery-after-folfirinox-treatment-for-locally-advanced-and-borderline-resectable-pancreatic-cancer-increase-in-tumour-attenuation-on-ct-correlates-with-r0-resection
#8
Giovanni Marchegiani, Valentina Todaro, Enrico Boninsegna, Riccardo Negrelli, Binit Sureka, Debora Bonamini, Roberto Salvia, Riccardo Manfredi, Roberto Pozzi Mucelli, Claudio Bassi
OBJECTIVES: To assess factors associated with radical resection (R0) of pancreatic ductal adenocarcinoma (PDAC) after induction treatment with FOLFIRINOX. METHODS: Patients with either locally advanced (LA) and borderline resectable (BR) PDAC undergoing surgical exploration after FOLFIRINOX were retrospectively enrolled. Two pancreatic radiologists reviewed the CT blinded to the final outcome and assessed chemotherapy response and resectability. Patients were then divided into R0 resected (group A) and not resected/R1 resected (group B), which were compared...
April 20, 2018: European Radiology
https://www.readbyqxmd.com/read/29679169/the-utility-of-scrotal-ultrasonography-in-the-emergent-setting-beyond-epididymitis-versus-torsion
#9
Christopher R McAdams, Andrew J Del Gaizo
Scrotal pain is a common acute presentation for medical care. Testicular torsion and epididymo-orchitis are two diagnoses for which early detection is critical and their sonographic imaging features have been thoroughly described in the radiologic literature. Other important conditions for which radiologists must be aware have received less attention. This article will highlight key traumatic and non-traumatic causes of acute scrotal pain other than testicular torsion and epididymo-orchitis that may present in the emergency department setting...
April 21, 2018: Emergency Radiology
https://www.readbyqxmd.com/read/29679101/t2-mapping-of-the-sacroiliac-joints-at-1-5-tesla-a-feasibility-and-reproducibility-study
#10
Domenico Albano, Vito Chianca, Renato Cuocolo, Rodolfo Bignone, Francesco Ciccia, Luca Maria Sconfienza, Massimo Midiri, Arturo Brunetti, Roberto Lagalla, Massimo Galia
OBJECTIVE: To evaluate the reproducibility of T2 relaxation time measurements of the sacroiliac joints at 1.5 T. MATERIALS AND METHODS: Healthy volunteers underwent an oblique axial multislice multiecho spin-echo sequence of the sacroiliac joints at 1.5 T. Regions of interest were manually drawn using a dedicated software by two musculoskeletal radiologists to include the cartilaginous part of the sacroiliac joints. A senior radiologist performed the measurement twice, while a resident measured once...
April 20, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/29679099/radiation-induced-carotid-artery-lesions
#11
REVIEW
Verónica Fernández-Alvarez, Fernando López, Carlos Suárez, Primoz Strojan, Avraham Eisbruch, Carl E Silver, William M Mendenhall, Johannes A Langendijk, Alessandra Rinaldo, Anne W M Lee, Jonathan J Beitler, Robert Smee, Javier Alvarez, Alfio Ferlito
PURPOSE: To review the current aspects of knowledge related to the risk of cerebrovascular events in patients receiving head and neck radiotherapy. METHODS: A literature search was performed in PubMed. Papers meeting selection criteria were reviewed. RESULTS: We provide an update on the problem by identifying key studies that have contributed to our current understanding of the epidemiology, radiologic features, pathogenesis, and treatment of the disease...
April 20, 2018: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/29679001/nonaneurysmal-perimesencephalic-subarachnoid-hemorrhage-as-an-atypical-initial-presentation-of-cerebral-venous-sinus-thrombosis-a-case-report
#12
Roaa R Amer, Eman A Bakhsh
BACKGROUND Subarachnoid hemorrhage is rarely the first presentation of cerebral venous sinus thrombosis. This case study emphasizes the presentation of perimesencephalic subarachnoid hemorrhage due to cerebral venous sinus thrombosis and the importance of neurovascular imaging for reliable diagnosis of nonaneurysmal perimesencephalic subarachnoid hemorrhage due to cerebral venous sinus thrombosis. CASE REPORT We describe a case of cerebral venous sinus thrombosis manifesting initially as subarachnoid hemorrhage...
April 21, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29678710/pediatric-type-follicular-lymphoma-in-the-dura-a-case-report-and-literature-review
#13
Junya Yamaguchi, Seiichi Kato, Eri Iwata, Kosuke Aoki, Ryusuke Kabeya, Atsushi Natsume, Toshihiko Wakabayashi
BACKGROUND: Primary central nervous system lymphoma (PCNSL) is a relatively common tumor of the central nervous system. Although PCNSLs generally arise from the parenchyma, lymphomas arising primarily from the dura are termed dural lymphomas (DL). Mucosa-associated lymphoid tissue is the most unique histological feature of DL. Due to its rarity, clinical characteristics and treatments for DL have not been fully elucidated to date. CASE DESCRIPTION: A 31-year-old man with no past medical history presented with numbness in his left upper limb...
April 17, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29678425/myopericytoma-of-the-base-of-the-finger-radiological-and-pathological-description-of-a-rare-benign-entity
#14
Laurent Van Camp, Jean Goubau, Ivo Van den Berghe, Koen Mermuys
A previously healthy 46-year-old woman presented with a mass lesion between the bases of the fourth and fifth fingers of the right hand. The mass had grown progressively over 2 years and started to cause practical difficulties in everyday life. Imaging depicted a hypervascular and well-circumscribed soft tissue tumor with imaging characteristics of a sarcoma. The lesion was treated surgically. The final diagnosis of the specimen upon pathology was a myopericytoma, a benign smooth-muscle cell neoplasm. Myopericytoma is a rare disease entity; however, it is important because it can mimic more ominous conditions...
April 17, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29678196/astroblastoma-a-rare-and-challenging-tumor-a-case-report-and-review-of-the-literature
#15
Nawal Hammas, Nadia Senhaji, My Youssef Alaoui Lamrani, Sanae Bennis, Elfaiz Mohamed Chaoui, Hind El Fatemi, Laila Chbani
BACKGROUND: Astroblastoma is a controversial and an extremely rare central nervous system neoplasm. Although its histogenesis has been clarified recently, controversies exist regarding its cellular origin and validity as a distinct entity. Because of its extreme rarity and because its common features are shared with other glial neoplasms, this tumor is prone to misdiagnosis and remains challenging not only in terms of diagnosis and classification but also in the subsequent management...
April 21, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29677993/shared-medical-imaging-repositories
#16
Rui Lebre, Luís Bastião, Carlos Costa
This article describes the implementation of a solution for the integration of ownership concept and access control over medical imaging resources, making possible the centralization of multiple instances of repositories. The proposed architecture allows the association of permissions to repository resources and delegation of rights to third entities. It includes a programmatic interface for management of proposed services, made available through web services, with the ability to create, read, update and remove all components resulting from the architecture...
2018: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/29676618/cancer-risk-from-paediatric-computed-tomography-scanning-implications-for-radiation-protection-in-medicine
#17
A Kesminiene, E Cardis
The use of computed tomography (CT) imaging is clearly beneficial for millions of patients. However, the potential adverse health effects, particularly cancer, of ionising radiation exposure from CT early in life are an issue of growing concern in the radiological protection, medical, and public health communities. Although efforts to quantify these effects have been conducted, the precision and accuracy of reported risks needs confirmation. EPI-CT, a European collaborative epidemiological study, was set up to quantify risks from paediatric CT to optimise paediatric diagnostic protocol...
January 1, 2018: Annals of the ICRP
https://www.readbyqxmd.com/read/29675642/dutch-guideline-for-clinical-foetal-neonatal-and-paediatric-post-mortem-radiology-including-a-review-of-literature
#18
REVIEW
L J P Sonnemans, M E M Vester, E E M Kolsteren, J J H M Erwich, P G J Nikkels, P A M Kint, R R van Rijn, W M Klein
Clinical post-mortem radiology is a relatively new field of expertise and not common practice in most hospitals yet. With the declining numbers of autopsies and increasing demand for quality control of clinical care, post-mortem radiology can offer a solution, or at least be complementary. A working group consisting of radiologists, pathologists and other clinical medical specialists reviewed and evaluated the literature on the diagnostic value of post-mortem conventional radiography (CR), ultrasonography, computed tomography (PMCT), magnetic resonance imaging (PMMRI), and minimally invasive autopsy (MIA)...
April 19, 2018: European Journal of Pediatrics
https://www.readbyqxmd.com/read/29675357/radiological-signs-associated-with-pulmonary-multi-drug-resistant-tuberculosis-an-analysis-of-published-evidences
#19
Yì Xiáng J Wáng, Myung Jin Chung, Aliaksandr Skrahin, Alex Rosenthal, Andrei Gabrielian, Michael Tartakovsky
Background: Despite that confirmative diagnosis of pulmonary drug-sensitive tuberculosis (DS-TB) and multidrug resistant tuberculosis (MDR-TB) is determined by microbiological testing, early suspicions of MDR-TB by chest imaging are highly desirable in order to guide diagnostic process. We aim to perform an analysis of currently available literatures on radiological signs associated with pulmonary MDR-TB. Methods: A literature search was performed using PubMed on January 29, 2018...
March 2018: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29675083/neuroimaging-in-menkes-disease
#20
Molla I Ahmed, Nahin Hussain
Menkes disease (MD) is a rare infantile onset neurodegenerative disorder due to mutations in the X linked ATP7A gene. These patients can present with failure to thrive, severe psychomotor retardation, seizures and hypopigmented hair, which is characteristic of this condition. A number of neuro-radiological findings have been reported in this condition. We report the spectrum of neuro-radiological findings in three affected boys being treated at our centre. We suggest that magnetic resonance imaging (MRI) and, in particular magnetic resonance angiography (MRA) when taken in the context of the clinical presentation may be helpful in making an early diagnosis of this devastating condition...
October 2017: Journal of Pediatric Neurosciences
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