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Hajime Senjo, Akio Mori, Minoru Kanaya, Koh Izumiyama, Kohei Okada, Kimihiro Takeyabu, Hirotoshi Tobioka, Makoto Saito, Masanori Tanaka, Takanori Teshima, Masanobu Morioka
An 84-year-old man, who had received artificial pneumothorax for pulmonary tuberculosis 67 years previously, complained of severe chest pain. Chest CT revealed chronic pyothorax with multiple heterogeneously enhanced cavity lesions in the wall of the right intrathoracic space.18 FDG-PET revealed that the lesions showed an abnormal uptake. CT-guided biopsy was performed and he was diagnosed with pyothorax-associated lymphoma (PAL); the histological diagnosis was diffuse large B cell lymphoma (DLBCL). Furthermore, immunohistochemical staining revealed that the tumor cells were positive for EBNA-2 and LMP-1, suggesting that the latent gene products of Epstein-Barr virus were associated with the development of PAL...
2018: Nihon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics
Kyoungjune Pak, Keunyoung Kim, Mi-Hyun Kim, Jung Seop Eom, Min Ki Lee, Jeong Su Cho, Yun Seong Kim, Bum Soo Kim, Seong Jang Kim, In Joo Kim
We aimed to develop a decision tree model to improve diagnostic performance of positron emission tomography/computed tomography (PET/CT) to detect metastatic lymph nodes (LN) in non-small cell lung cancer (NSCLC). 115 patients with NSCLC were included in this study. The training dataset included 66 patients. A decision tree model was developed with 9 variables, and validated with 49 patients: short and long diameters of LNs, ratio of short and long diameters, maximum standardized uptake value (SUVmax) of LN, mean hounsfield unit, ratio of LN SUVmax and ascending aorta SUVmax (LN/AA), and ratio of LN SUVmax and superior vena cava SUVmax...
2018: PloS One
K Farah, T Graillon, H Dufour, S Fuentes
INTRODUCTION: Adjacent level spondylodiscitis (ALS) after primary surgery for thoracic spondylodiscitis is a very rare condition. CASE REPORT: We report the case of a 76-year-old man with this pathology. A first posterior minimally invasive approach combined with anterior approach to the thoracic spine was safely performed for thoracic spondylodiscitis. More than a year later, exploration of recurrent symptoms with 18 FDG PET scan helped to diagnose ALS. Further surgery was performed...
February 12, 2018: Neuro-Chirurgie
Stjepan Hmelik, Margareta Dobrenić, Dražen Huić
Pulmonary artery sarcomas (PAS's) are extremely rare malignant tumors that arise from the endothelial lining of the pulmonary arteries. On CT scans PAS's appear as intraluminal filling defects in the pulmonary arteries, mimicking pulmonary embolism (PE). Due to the similarities in radiographic features as well as in clinical presentation, PAS's are usually misdiagnosed as pulmonary embolism. Since PASs are F-18 FDG avid, F-18 FDG PET/CT scan is a useful imaging tool for differentiating between these two conditions, as shown in this case report...
2018: Nuclear Medicine Review. Central & Eastern Europe
Marta Lai, Irene Vassallo, Bernard Lanz, Carole Poitry-Yamate, Marie-France Hamou, Cristina Cudalbu, Rolf Gruetter, Monika E Hegi
Glioblastoma are notorious for their highly invasive growth, diffusely infiltrating adjacent brain structures that precludes complete resection, and is a major obstacle for cure. To characterize this "invisible" tumor part, we designed a high resolution multimodal imaging approach assessing in vivo the metabolism of invasively growing glioma xenografts in the mouse brain. Animals were subjected longitudinally to Magnetic Resonance Imaging (MRI) and 1 H spectroscopy (MRS) at ultra high field (14.1 Tesla) that allowed the measurement of 16 metabolic biomarkers to characterize the metabolic profiles...
February 8, 2018: International Journal of Cancer. Journal International du Cancer
Ismaheel O Lawal, Alfred O Ankrah, Gbenga O Popoola, Thabo Lengana, Mike M Sathekge
BACKGROUND: HIV infection is associated with the risk of development of atherosclerosis at a younger age. We compared arterial inflammation in HIV-infected and HIV-uninfected patients with otherwise low-risk factors for cardiovascular disease (CVD) using FDG PET/CT. METHODS: 242 patients aged 18-40 years with low-risk factors for CVD consisting of 121 HIV-infected patients and 121 HIV-uninfected age- and gender-matched controls were studied, mean age = 34.95 ± 5...
February 7, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
Michael Poulsen, David Macfarlane, Michael Veness, Venessa Estall, George Hruby, Mahesh Kumar, Andrew Pullar, Lee Tripcony, Danny Rischin
INTRODUCTION: TROG 09.03 prospectively studied the utility of Fluorine-18 Fluorodeoxyglucose (18-FDG) PET in the management of Merkel cell carcinoma of skin. METHODS: Following consent and registration, a pre-treatment FDG-PET/CT was performed. Sites of avid disease were confirmed by cytology where practicable. Following surgery, patients with AJCCv7 Stages IIA-IIIB disease were treated with chemo-radiotherapy and reassessed with a post-treatment PET. RESULTS: Fifty-eight subjects (45 males and 13 females, median age 68 years) were enrolled between 2011 and 2015, 43 patients of whom went on to receive chemo-radiotherapy...
February 5, 2018: Journal of Medical Imaging and Radiation Oncology
Myoung Hyoun Kim, Dae-Weung Kim, Soon-Ah Park, Chang Guhn Kim
F-18 fluorodeoxyglucose (FDG) is a highly influential radiotracer that provides valuable information in many cancer types. However, the normal biodistribution of F-18 FDG is often variable and can be altered by intrinsic or iatrogenic factors. We report a case of diffuse symmetrically increased skeletal muscle uptake and relatively decreased hepatic uptake on F-18 FDG PET/CT in a 57-year-old female with pulmonary adenocarcinoma. Detailed clinical evaluation and retrospective radiologic evaluation revealed that she had been diagnosed with subacute thyroiditis 2 weeks ago...
February 2018: Nuclear Medicine and Molecular Imaging
Weiqian Wu, Chongyang Wang, Jianwei Ruan, Feng Chen, Ningjun Li, Fanghu Chen
RATIONALE: Tumor-induced osteomalacia (TIO) is a rare and often misdiagnosed syndrome. Surgical resection is currently the first line treatment for TIO. PATIENT CONCERNS: Here we report the case of a 49-year-old woman presented with intermittent pain in the right chest and bilateral hip that had persisted for over two years. DIAGNOSES: She was diagnosed of TIO caused by a phosphaturic mesenchymal tumor based on the following examinations. Laboratory tests revealed high serum alkaline phosphatase, high urinary phosphorus, hypophosphatemia and normal serum calcium levels...
December 2017: Medicine (Baltimore)
Atsutaka Okizaki, Michihiro Nakayama, Kaori Nakajima, Koji Takahashi
Positron emission tomography (PET) has become a useful and important technique in oncology. However, spatial resolution of PET is not high; therefore, small abnormalities can sometimes be overlooked with PET. To address this problem, we devised a novel algorithm, iterative modified bicubic interpolation method (IMBIM). IMBIM generates high resolution and -contrast image. The purpose of this study was to investigate the utility of IMBIM for clinical FDG positron emission tomography/X-ray computed tomography (PET/CT) imaging...
December 2017: Medicine (Baltimore)
Sten E Deurvorst, Otto S Hoekstra, Jonas A Castelijns, Birgit I Witte, C René Leemans, Remco de Bree
OBJECTIVES: The detection of distant metastases is of major importance in management of head and neck squamous cell carcinoma patients. DESIGN: All patients underwent 18FDG PET/CT for the detection of distant metastases. SETTING: Retrospective single center study. PARTICIPANTS: Head and neck squamous cell carcinoma patients with high risk factors for distant metastases. MAIN OUTCOME MEASURES: Accuracy of 18FDG PET/CT for the detection of distant metastases using clinical development of distant metastases and a minimal follow-up of twelve months as reference standard...
January 28, 2018: Clinical Otolaryngology
Colombe Crosnier, Aurélie Achille, Marie Lecouffe-Desprets, Antoine Néel, Cécile Durant, Christian Agard
We report two cases of elderly patients with diffuse systemic sclerosis (SSc) and inaugural scleroderma renal crisis (SRC). Initial exhaustive search for an underlying cancer was negative, but aggressive metastatic neoplasia was diagnosed after 1 year of follow-up. We emphasize the role of 18-FDG PET-scan to detect neoplasia in the following months after inaugural SRC in elderly.
January 15, 2018: QJM: Monthly Journal of the Association of Physicians
Kaoru Maruyama, Keita Utsunomia, Takahiro Nakamoto, Shigenari Kawakita, Takashi Murota, Noboru Tanigawa
A 76-year-old man with symptomatic bone metastases from castration-resistant prostate cancer underwent Radium-223-dichloride (Ra-223) therapy. Before Ra-223 therapy, he had normal peripheral blood cell counts. Ra-223 therapy relieved his shoulder and low back pain. The elevation of the serum prostate-specific antigen (PSA), doubling every month during Ra-223 therapy, suggested a PSA flare or relapse. Some lesions showed decrease and some lesions showed increase on Tc-99m hydroxymethylene diphosphonate bone scintigraphy at two weeks after the third injection of Ra-223 therapy...
2018: Asia Oceania Journal of Nuclear Medicine & Biology
Seong-Jang Kim, Sang Woo Lee, Kyoungjune Pak, In-Ju Kim, Keunyoug Kim
OBJECTIVE: We aimed to explore the role of the diagnostic accuracy of F-18 fluorodeoxyglucose positron emission tomography (F-18 FDG PET) or positron emission tomography/computed tomography (PET/CT) for characterization of adrenal lesions through a systematic review and meta-analysis. METHODS: The MEDLINE, EMBASE, and Cochrane Library database, from the earliest available date of indexing through April 30, 2017, were searched for studies evaluating the diagnostic performance of F-18 FDG PET or PET/CT for characterization of adrenal lesions...
January 12, 2018: British Journal of Radiology
Michael Marquardt, Carryn Anderson, Timothy Ginader, Jessica Parkhurst, Nitin Pagedar, Rodrigo Bayon, Gerald Clamon, Andrew Hoover, John Buatti
OBJECTIVES: To evaluate the performance of surveillance F-18 fluorodeoxyglucose positron emission tomography/computed tomography (PET/CT) 1 year after imaging in oral squamous cell carcinoma (OSCC) patients treated with definitive surgery and adjuvant (chemo)radiotherapy (RT). METHODS AND MATERIALS: Surveillance PET/CT accuracy was retrospectively evaluated in OSCC patients receiving surgical resection and (chemo)RT. Pathologic risk factors were assessed for influence on accuracy of the post-RT PET/CT...
March 2018: Annals of Otology, Rhinology, and Laryngology
Young Jin Jeong, Hyun Jin Yoon, Do-Young Kang
In Alzheimer disease (AD), neuroinflammation is an important process related to the deposition of beta-amyloid plaques and the activation of microglia. The inflammatory process can occur in both the gray matter and the white matter. We evaluated glucose metabolism of the white matter in AD patients and compared the value with cognitive parameters of the patients.Eighteen AD patients and 18 healthy subjects underwent F-18 fluorodeoxyglucose (FDG) and F-18 florbetaben positron emission tomography (PET). After segmentation of the white matter in both PET images, the specific binding ratio (SBR) of the global and regional cerebral white matter was checked...
December 2017: Medicine (Baltimore)
Michael K O'Connor, Thuy D Tran, Tiffinee N Swanson, Lacey R Ellingson, Katie N Hunt, Dana H Whaley
BACKGROUND: Breast lesions closer than 2 cm to the chest wall are difficult to position in the field of view of dedicated breast PET (db-PET) systems. This inability to detect such lesions is a significant limitation of these systems. The primary objective of this study was to determine if modifications to the design of the imaging table and detector used for a db-PET system would enable improved visualization of breast tissue close to the chest wall. All studies were performed on a commercially available db-PET system (Mammi-PET)...
December 19, 2017: EJNMMI Research
Hannah Bainbridge, Ahmed Salem, Rob H N Tijssen, Michael Dubec, Andreas Wetscherek, Corinne Van Es, Jose Belderbos, Corinne Faivre-Finn, Fiona McDonald
Radiotherapy remains the cornerstone of curative treatment for inoperable locally advanced lung cancer, given concomitantly with platinum-based chemotherapy. With poor overall survival, research efforts continue to explore whether integration of advanced radiation techniques will assist safe treatment intensification with the potential for improving outcomes. One advance is the integration of magnetic resonance imaging (MRI) in the treatment pathway, providing anatomical and functional information with excellent soft tissue contrast without exposure of the patient to radiation...
December 2017: Translational Lung Cancer Research
Carsten Kobe, Markus Dietlein, Dirk Hellwig
Over the course of many decades, combined chemotherapy and radiotherapy adapted to the stage of disease have become the optimal and standard treatment for Hodgkin lymphoma (HL) and diffuse large B-cell lymphoma. Besides achieving optimized cure rates of the underlying disease, reduction of toxicity has become a major goal. Since the introduction of FDG-PET for the staging and restaging of patients with lymphoma, a high predictive value of F-18-FDG-PET in response assessment has been observed. Several PET-response-guided therapy regimens have already been established, and even more PET-adapted study designs are being tested in large study groups...
January 2018: Seminars in Nuclear Medicine
Gonca G Bural, Drew A Torigian, Mohamed Houseni, Kaan M Sözmen, Abass Alavi
OBJECTIVE: Fluorine-18 fluorodeoxylglucose positron emission tomography/computed tomography (18 F-FDG PET/CT) has a well-established role for detection and quantification of atherosclerotic inflammatory disease using standardized uptake value (SUV) measurements. Our aim was to compare the inflammatory and macroscopic calcification processes of atherosclerosis in the aortic segments and large arteries of subjects with insulin dependent diametes mellitus (IDDM) compared to those of age-matched controls via18 F-FDG PET/CT...
September 2017: Hellenic Journal of Nuclear Medicine
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