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Computed tomography

Hui Jiang, Yicun Wang, Zhantao Deng, Jiewen Jin, Jia Meng, Shuo Chen, Jun Wang, Yang Qiu, Ting Guo, Jianning Zhao
Wear particle-induced osteolysis is a major cause of aseptic loosening in arthroplasty failure, but the underlying mechanism remains unclear. Due to long follow-ups necessary for detection and sporadic occurrence, it is challenging to assess the pathogenesis ofparticle-induced osteolysis in clinical cases. Hence, optimal animal models are required for further studies. The murine model of calvarial osteolysis established by exposure to CoCrMo particles is an effective and valid tool for assessing the interactions between particles and various cells in aseptic loosening...
February 17, 2018: Journal of Visualized Experiments: JoVE
Pablo Cortegoso Valdivia, Mauro Bruno, Silvia Gaia, Giorgio M Saracco, Claudio DE Angelis
We report a rare case of gastric fistulization in a patient with main-duct (MD) intraductal papillary mucinous neoplasm (IPMN). Fistulization to adjacent organs is a rare complication of this disease, mainly affecting the duodenum; the fact that the stomach was the only organ involved makes this case even more peculiar. The diagnosis of the fistula was made after examination with Endoscopic Ultrasound (EUS), since a previous computed tomography (CT) scan wasn't able to detect it.
March 16, 2018: Minerva Gastroenterologica e Dietologica
Didier Roulin, Raphaël Girardet, Rafael Duran, Steven Hajdu, Alban Denys, Nermin Halkic, Nicolas Demartines, Emmanuel Melloul
The specific management and outcome of acute biliary pancreatitis in elderly patients is not well established. The aim of this study was to assess the outcome of elderly compared to younger patients after acute biliary pancreatitis. Retrospective analysis of consecutive patients admitted with acute biliary pancreatitis between January 2006 and December 2012. Elderly patients (≥ 70 years) were compared to younger patients (< 70 years) in a case-control study. Comorbidities were assessed according to the Charlson score...
2018: Bioscience Trends
Zilun Li, Henghui Yin, Mian Wang, Ridong Wu, Chenshu Liu, Chen Yao, Guangqi Chang
PURPOSE: To report the use of the octopus endograft technique to treat a patient with a ruptured thoracoabdominal aortic aneurysm (TAAA). CASE REPORT: A 46-year-old man was diagnosed with a contained rupture of a 9-cm type V TAAA. The presence of an occluded superior mesenteric artery (SMA), a stenotic celiac trunk, an enlarged inferior mesenteric artery (IMA), and rich collaterals with the SMA and celiac trunk made endovascular repair with the octopus endograft technique appear feasible...
April 2018: Journal of Endovascular Therapy
Alireza Mojtahedi, Sohail Contractor, Piotr S Kisza
Bullet embolization to the right heart through the vasculature is seen infrequently in cases presenting with penetrating trauma. Patients with unstable hemodynamic status are managed operatively. For a patient with stable hemodynamic parameters, diagnostic evaluation such as computed tomography angiogram, echocardiogram, or angiography could be performed to select the best treatment option. Endovascular treatment is employed infrequently in these cases but can be a viable option for select patients. We present a case of a bullet embolus to the right ventricle treated successfully with endovascular approach and discuss the technical aspects of this approach...
January 1, 2018: Vascular and Endovascular Surgery
D Messineo, S Masieri, C Cavaliere
Rhinitis is an underestimated clinical condition, which has a considerable impact on the quality of life of the affected patients. The subject of this review focuses on three fundamental aspects: the development of knowledge concerning anatomic landmarks, the development of radiological imaging technology, and developments that can make a difference in the treatment of allergic rhinitis. The anatomical study of paranasal sinuses has been conducted since the time of the ancient Egyptians. Development of radiological equipment from the early 1900s has helped to improve information on the morphology of paranasal sinuses, sufficient to be considered valuable information regarding frontal anatomy and its variability...
January 2018: Journal of Biological Regulators and Homeostatic Agents
Canan Koksal, Ugur Akbas, Nazmiye Donmez Kesen, Murat Okutan, Hatice Bilge, Gonul Kemikler
PURPOSE: The purpose of this study was to perform pretreatment patient-specific quality assurance (QA) for intracranial irradiation using CyberKnife with an ion chamber. METHODS: Twenty-five intracranial plans created using the ray-tracing algorithm were used for this study. Computed tomography (CT) images of the water-equivalent RW3 slab phantom with PinPoint ionization chamber were acquired with 1-mm slice thickness and transferred to the MultiPlan treatment planning system (TPS)...
January 2018: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
Chiara De Biase, Antonios Mastrokostopoulos, Raphael Philippart, Louis Marie Desroche, Stephanie Blanco, Kamel Rehal, Nicolas Dumonteil, Didier Tchetche
This original clinical research study id focused on description of baseline anatomy and outcomes after transcatheter aortic valve implantation (TAVI) in patients presenting with severe aortic stenosis (AS) and bicuspid aortic valve (BAV). We compared this BAV population with a population of patients with AS and tricuspid aortic valves after a propensity score matching developed by a multivariate logistic regression according to a non-parsimonious approach. Baseline anatomical characteristics were obtained by transthoracic echocardiography (TTE) and multi-sliced computed tomography (MSCT) and compared by chi-square and t-student tests...
April 2018: Data in Brief
Timm Oberwahrenbrock, Ghislaine L Traber, Sebastian Lukas, Iñigo Gabilondo, Rachel Nolan, Christopher Songster, Lisanne Balk, Axel Petzold, Friedemann Paul, Pablo Villoslada, Alexander U Brandt, Ari J Green, Sven Schippling
Objective: To evaluate the inter-rater reliability of semiautomated segmentation of spectral domain optical coherence tomography (OCT) macular volume scans. Methods: Macular OCT volume scans of left eyes from 17 subjects (8 patients with MS and 9 healthy controls) were automatically segmented by Heidelberg Eye Explorer (v1.9.3.0) beta-software (Spectralis Viewing Module v6.0.0.7), followed by manual correction by 5 experienced operators from 5 different academic centers...
May 2018: Neurology® Neuroimmunology & Neuroinflammation
Habiba Hashimi, David T Cooke, Elizabeth A David, Lisa M Brown
Accurate staging for non-small cell lung cancer (NSCLC) is essential to guide therapy. While computed tomography (CT) and positron emission tomography (PET) scan can indicate whether mediastinal lymphadenopathy is present, histologic confirmation is required to complete the staging evaluation. Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is a minimally invasive technique associated with similar diagnostic yield and improved postoperative pain and complication rates compared to mediastinoscopy...
2018: Journal of Visualized Surgery
Federico Davini, Sara Ricciardi, Carmelina Cristina Zirafa, Ilenia Cavaliere, Gaetano Romano, Franca Melfi
Background: The incidental detection of solitary pulmonary nodule (SPN) is currently increasing due to the widespread use of computed tomography (CT) during the follow up in oncological patients or in screening trials. A quick and definitive histological diagnosis of these nodes is mandatory as, in case of primitive lung cancer, an early detection could improve both surgical results and prognosis. The minimally invasive pulmonary resection (MIPR) is the gold standard procedure for diagnosis and treatment of small lung nodules, but it can be difficult to localize deep nonpalpable nodes that lie in the lung parenchyma...
2018: Journal of Visualized Surgery
Maiko Shibasaki, Toshinori Iwai, Senri Oguri, Toshiyuki Koizumi, Makoto Hirota, Kenji Mitsudo, Yukihiko Ozawa, Iwai Tohnai
Introduction: Although chemoradiotherapy (CRT) for oral squamous cell carcinoma (SCC) has been shown to preserve organ function and improve cosmetic results, site-specific data, especially mandible, are limited. The aim of this study was to evaluate the predictability of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) on response to super-selective intra-arterial CRT for advanced SCC of the mandible. Methods: Fifteen patients with advanced SCC of the mandible underwent super-selective intra-arterial CRT followed by radical resection...
June 2018: Journal of Bone Oncology
Abhilasha Siyag, Tej P Soni, Anil K Gupta, Lalit M Sharma, Naresh Jakhotia, Shantanu Sharma
Plasmacytoma of the skull-base is a rare entity. Differential diagnosis includes chordoma, osteosarcoma, carcinoma nasopharynx, meningioma, metastatic carcinoma, lymphoma, and multiple myeloma. Accurate and precise diagnosis is extremely important for plasmacytoma of the skull-base as its treatment and prognosis is different from other skull-base lesions. A 41-year-old man presented with concerns of headache, diplopia, and left eye strabismus. A magnetic resonance image (MRI) of his brain showed a large expansile mass measuring 51 mm involving the clivus and central skull-base...
January 15, 2018: Curēus
Raja Kalaiarasi, Chellappa Vijayakumar, Ramalingam Archana, Ramalingam Natarajan
Tuberculosis (TB) is a worldwide public health problem; however, primary tuberculous osteomyelitis involving the mandible is extremely rare. Here, we report a 14-year-old boy who presented with a recurrent, generalized swelling of the cheek in the right side, mimicking parotitis. Fine needle aspiration cytology (FNAC) from the swelling was inconclusive. Contrast-enhanced computed tomography (CECT) of the head and neck revealed an osteolytic lesion of the mandible with a surrounding abscess. An intraoral incisional biopsy of the tissue showed a granulomatous lesion...
January 15, 2018: Curēus
Shetty Sushruth, Chellappa Vijayakumar, Krishnamachari Srinivasan, Nagarajan Raj Kumar, Gopal Balasubramaniyan, Surendra K Verma, A Ramesh
Background Right iliac fossa (RIF) pain is one of the most common modalities of presentation to surgical emergency. It remains a challenge to the treating clinicians to accurately diagnose or to rule out appendicitis. Objective The aim of the study was to compare the efficacy of clinical impression, biochemical markers, and imaging in the diagnosis of RIF pain with special reference to appendicitis and their implication in reducing the negative appendicectomy rates. Methods All patients presenting to casualty with RIF pain were included in the study...
January 15, 2018: Curēus
Muhammad Sohail Umerani, Hira Burhan, Salman Sharif, Tauqir Ul Islam, Mehak Hafiz Ghaziani
Orbital roof defects are rare congenital osseous abnormalities that cause protrusion of intracranial contents into the orbit, resulting in a condition known as the orbital meningoencephalocele, a rare cause of pulsatile proptosis. We present a case of a 25-year-old lady, presented to us with complaints of left frontal headache, left eye protrusion and double vision from the left eye for the past three months. Her higher mental functions were intact. Local examination revealed non-axial pulsatile proptosis and an outward depression of the left eyeball along with diplopia...
January 15, 2018: Curēus
Nicusor Iftimia, Jesung Park, Gopi Maguluri, Savitri Krishnamurthy, Amanda McWatters, Sharjeel H Sabir
We report the development and the pre-clinical testing of a new technology based on optical coherence tomography (OCT) for investigating tissue composition at the tip of the core biopsy needle. While ultrasound, computed tomography, and magnetic resonance imaging are routinely used to guide needle placement within a tumor, they still do not provide the resolution needed to investigate tissue cellularity (ratio between viable tumor and benign stroma) at the needle tip prior to taking a biopsy core. High resolution OCT imaging, however, can be used to investigate tissue morphology at the micron scale, and thus to determine if the biopsy core would likely have the expected composition...
February 1, 2018: Biomedical Optics Express
Vera Spatenkova, Pavlina Krejzarova, Jaroslav Jedlicka
Introduction: Dysphagia is a risk factor for aspiration pneumonia and acute respiratory failure in acute stroke patients. Dysphagia lusoria is caused by compression on the esophagus from artery lusoria, when the aberrant right subclavian artery arises from the descending aortic arch. We present a rare case report of pre-stroke undiagnosed dysphagia lusoria as a cause of aspiration pneumonia with acute respiratory failure in a 67-year-old female patient admitted with a minor left intracerebral hemorrhage in the left basal ganglia...
2018: SAGE Open Medical Case Reports
Luciano Tarantino, Aurelio Nasto, Giuseppina Busto, Vincenzo Iovino, Raffaele Fristachi, Sara Bortone
Introduction: Solid pseudopapillary Carcinoma (SPC) is a rare pancreatic Tumor with variable, usually low, malignancy potential. Howewer, several SPC are associated with aggressive behavior, local vascular infiltration, organ invasion, distant metastasis, and can be unresectable. Irreversible Electroporation (IRE) is an emerging non-thermal ablation technique for the treatment of locally advanced pancreatic carcinoma. We report the results of four year disease-free follow-up in a case of locally advanced unresectable SPC treated with IRE...
April 2018: Annals of Medicine and Surgery
Chenxue Jiang, Shuiyun Han, Wucheng Chen, Xiaozhen Ying, He Wu, Yaoyao Zhu, Guodong Shi, Xiaojiang Sun, Yaping Xu
Background: and purpose: This retrospective study aimed to investigate the feasibility of shrinking field radiotherapy during chemoradiotherapy in non-small cell lung cancer (NSCLC). Patients and methods: Ninety-seven patients with stage III NSCLC who achieved a good response to chemoradiation were analyzed. Computed tomography was performed after 40-50 Gy dose radiation to evaluate curative effect. Patients in the shrinking field group underwent resimulation CT scans and shrinking field radiotherapy...
February 23, 2018: Oncotarget
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