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Radiation fibrosis

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https://www.readbyqxmd.com/read/29332607/the-role-of-t2-weighted-gradient-echo-in-the-diagnosis-of-tumefactive-intrahepatic-extramedullary-hematopoiesis-in-myelodysplastic-syndrome-and-diffuse-hepatic-iron-overload-a-case-report-and-review-of-the-literature
#1
Abel A Belay, Andrew M Bellizzi, Alan H Stolpen
BACKGROUND: Extramedullary hematopoiesis is the proliferation of hematopoietic cells outside bone marrow secondary to marrow hematopoiesis failure. Extramedullary hematopoiesis rarely presents as a mass-forming hepatic lesion; in this case, imaging-based differentiation from primary and metastatic hepatic neoplasms is difficult, often leading to biopsy for definitive diagnosis. We report a case of tumefactive hepatic extramedullary hematopoiesis in the setting of myelodysplastic syndrome with concurrent hepatic iron overload, and the role of T2*-weighted gradient-echo magnetic resonance imaging in differentiating extramedullary hematopoiesis from primary and metastatic hepatic lesions...
January 15, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29332538/role-of-infiltrating-monocytes-in-the-development-of-radiation-induced-pulmonary-fibrosis
#2
Angela M Groves, Carl J Johnston, Jacqueline P Williams, Jacob N Finkelstein
Lung exposure to radiation induces an injury response that includes the release of cytokines and chemotactic mediators; these signals recruit immune cells to execute inflammatory and wound-healing processes. However, radiation alters the pulmonary microenvironment, dysregulating the immune responses and preventing a return to homeostasis. Importantly, dysregulation is observed as a chronic inflammation, which can progress into pneumonitis and promote pulmonary fibrosis; inflammatory monocytes, which are bone marrow derived and express CCR2, have been shown to migrate into the lung after radiation exposure...
January 13, 2018: Radiation Research
https://www.readbyqxmd.com/read/29318449/reduction-oxidation-redox-system-in-radiation-induced-normal-tissue-injury-molecular-mechanisms-and-implications-in-radiation-therapeutics
#3
REVIEW
R Yahyapour, E Motevaseli, A Rezaeyan, H Abdollahi, B Farhood, M Cheki, S Rezapoor, D Shabeeb, A E Musa, M Najafi, V Villa
Every year, millions of cancer patients undergo radiation therapy for treating and destroying abnormal cell growths within normal cell environmental conditions. Thus, ionizing radiation can have positive therapeutic effects on cancer cells as well as post-detrimental effects on surrounding normal tissues. Previous studies in the past years have proposed that the reduction and oxidation metabolism in cells changes in response to ionizing radiation and has a key role in radiation toxicity to normal tissue. Free radicals generated from ionizing radiation result in upregulation of cyclooxygenases (COXs), nitric oxide synthase (NOSs), lipoxygenases (LOXs) as well as nicotinamide adenine dinucleotide phosphate oxidase (NADPH oxidase), and their effected changes in mitochondrial functions are markedly noticeable...
January 9, 2018: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/29316366/impact-of-radiation-therapy-on-scleroderma-and-cancer-outcomes-in-scleroderma-patients-with-breast-cancer
#4
Dhaval J Shah, Ram Hirpara, Corrie L Poelman, Adrianne Woods, Laura K Hummers, Fredrick M Wigley, Jean L Wright, Arti Parekh, Virginia D Steen, Robyn T Domsic, Ami A Shah
OBJECTIVES: We examined SSc patients with breast cancer to 1) identify the prevalence of radiation complications and 2) examine SSc outcomes in SSc patients who received radiation therapy (RT) as part of their cancer treatment. METHODS: Patients with SSc and breast cancer were identified from the Johns Hopkins and University of Pittsburgh Scleroderma Center databases. We examined whether erythema, blistering, ulceration, or thickening of the skin developed in the RT port...
January 5, 2018: Arthritis Care & Research
https://www.readbyqxmd.com/read/29304834/evolutionary-aspects-of-non-metastatic-breast-cancer-after-primary-treatment-in-a-sub-saharan-african-setting-a-16-year-retrospective-review-at-the-douala-general-hospital-cameroon
#5
Bibiana Ateh Nzeangung, Martin Essomba Biwole, Benjamin Momo Kadia, Ndemazie Nkafu Bechem, Christian Akem Dimala, Albert Mouelle Sone
BACKGROUND: Breast cancer has a high case fatality rate in sub-Saharan Africa, and this is chiefly because of late detection and inadequate treatment resources. Progressive renovations in diagnostic and management modalities of non-metastatic breast cancer (NMBC) have been noted in the region but there is paucity of data describing the clinical progress of patients with NMBC. This study sought to determine the rates of local relapse, distant metastasis and sequelae and the time span from initial treatment to the occurrence of these adverse events among patients with NMBC...
January 5, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29302697/-laser-and-light-therapy-for-treatment-of-radiation-dermatitis
#6
REVIEW
H-J Laubach, J Robijns
Radiation dermatitis (RD), an inflammatory skin disease that can be an unwanted side effect of medical radiation therapy (RT), most commonly occurs in patients undergoing cancer of the ENT, anal, and vulvar regions. The side effects on the skin and mucous membranes occur within a few weeks after the initiation of RT; however, late side effects can develop months to years after the RT. Therapeutically, various treatment approaches are considered such as pentoxifylline, hyperbaric oxygen therapy, laser therapy, and PBMT...
January 4, 2018: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/29299403/radiological-differential-diagnosis-between-fibrosis-and-recurrence-after-stereotactic-body-radiation-therapy-sbrt-in-early-stage-non-small-cell-lung-cancer-nsclc
#7
Rezarta Frakulli, Fabrizio Salvi, Damiano Balestrini, Marcella Palombarini, Ilir Akshija, Silvia Cammelli, Alessio Giuseppe Morganti, Maurizio Zompatori, Giovanni Frezza
Background: Parenchymal changes after stereotactic body radiation therapy (SBRT) make differential diagnosis between treatment outcomes and disease recurrence often difficult. The purpose of our study was to identify the radiographic features detectable at computed tomography (CT) scan [high-risk features (HRFs)] that allow enough specificity and sensitivity for early detection of recurrence. Methods: We retrospectively evaluated patients who underwent SBRT for inoperable early stage non-small cell lung cancer (NSCLC)...
December 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/29294517/-effects-of-nf-%C3%AE%C2%BAb-inhibitor-on-nuclear-factor-%C3%AE%C2%BAb-and-intercellular-adhesion-moceule-1-in-lung-injury-associated-with-radiation-of-rats
#8
L Shi, M Wei
Objective: To investigate the mechanism of lung injury caused by radiation-induced lung injury by observing the change of nuclear factor (NF-κB) and intercellular adhesion moceule-1 (ICAM-1) in rats and the effects of pyrrolidine dithiocarbamate (PDTC) . Methods: 80 SD female rats were randomly classified into 4 groups: control group, radiation group, PDTC treatment group and PDTC group.The radiation induced pulmonary injury model was preformed by using 6 MV X-rays to deliver 8 Gy per day for 5 consecutive days with 40 Gy in total to the thorax of each animal...
September 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29284507/a-pediatric-disease-to-keep-in-mind-diagnostic-tools-and-management-of-bronchiectasis-in-pediatric-age
#9
REVIEW
Marcella Gallucci, Emanuela di Palmo, Luca Bertelli, Federica Camela, Giampaolo Ricci, Andrea Pession
Bronchiectasis in pediatric age is a heterogeneous disease associated with significant morbidity.The most common medical conditions leading to bronchial damage are previous pneumonia and recurrent lower airway infections followed by underlying diseases such as immune-deficiencies, congenital airway defects, recurrent aspirations and mucociliary clearance disorders.The most frequent symptom is chronic wet cough. The introduction of high-resolution computed tomography (HRCT) has improved the time of diagnosis allowing earlier treatment...
December 29, 2017: Italian Journal of Pediatrics
https://www.readbyqxmd.com/read/29283342/acoustic-radiation-force-induced-creep-recovery-arficr-a-noninvasive-method-to-characterize-tissue-viscoelasticity
#10
Carolina Amador Carrascal, Shigao Chen, Matthew W Urban, James F Greenleaf
Ultrasound shear wave elastography is a promising noninvasive, low cost, and clinically viable tool for liver fibrosis staging. Current shear wave imaging technologies on clinical ultrasound scanners ignore shear wave dispersion and use a single group velocity measured over the shear wave bandwidth to estimate tissue elasticity. The center frequency and bandwidth of shear waves induced by acoustic radiation force depend on the ultrasound push beam (push duration, -number, etc.) and the viscoelasticity of the medium, and therefore are different across scanners from different vendors...
January 2018: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/29280463/cavernous-nerve-injury-by-radiation-therapy-may-potentiate-erectile-dysfunction-in-rats
#11
Javed Mahmood, Caroline Q Connors, Allen A Alexander, Radmila Pavlovic, Santanu Samanta, Sandrine Soman, Hotaka Matsui, Nikolai A Sopko, Trinity J Bivalacqua, Daniel Weinreich, Cheng-Ying Ho, John Eley, Amit Sawant, Isabel L Jackson, Zeljko Vujaskovic
PURPOSE/OBJECTIVES: Radiation-induced erectile-dysfunction (RiED) is one of the most common side effects of radiation therapy (RT) and significantly reduces the quality of life (QoL) of cancer patients. Approximately 50% of prostate cancer patients experience RiED within 3 to 5 years after completion of RT. A series of vascular, muscular, and neurogenic injuries after prostate RT lead to RiED; however, the precise role of RT-induced neurogenic injury in RiED has not been fully established...
November 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29276442/constrictive-pericarditis-5-months-after-radiation-therapy-in-a-62-year-old-woman-with-esophageal-cancer
#12
Beeletsega T Yeneneh, Sorcha Allen, Prasad Panse, Farouk Mookadam, William Rule
Most pericardial changes appear within a few weeks in patients who have undergone radiation therapy for thoracic neoplasms. Chronic pericardial constriction typically occurs decades later, consequent to fibrosis. Early constrictive pericarditis after chest irradiation is quite rare. We report the case of a 62-year-old woman who underwent radiation therapy for esophageal cancer and presented with constrictive pericarditis 5 months later. We searched the English-language medical literature from January 1986 through December 2015 for reports of early constrictive pericarditis after irradiation for thoracic malignancies...
December 2017: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/29259252/image-guided-fluorescence-endomicroscopy-from-macro-to-micro-imaging-of-radiation-induced-pulmonary-fibrosis
#13
Jessica R Perez, Norma Ybarra, Frederic Chagnon, Monica Serban, Gabriel Pare, Olivier Lesur, Jan Seuntjens, Issam El Naqa
Radiation-induced pulmonary fibrosis (RIPF) is a debilitating side effect of radiation therapy (RT) of several cancers including lung and breast cancers. Current clinical methods to assess and monitor RIPF involve diagnostic computed tomography (CT) imaging, which is restricted to anatomical macroscopic changes. Confocal laser endomicroscopy (CLE) or fluorescence endomicroscopy (FE) in combination with a fibrosis-targeted fluorescent probe allows to visualize RIPF in real-time at the microscopic level. However, a major limitation of FE imaging is the lack of anatomical localization of the endomicroscope within the lung...
December 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29234836/trans-urethral-ureteral-stent-replacement-technique-trust-10-year-experience-in-1168-patients
#14
Gianpaolo Carrafiello, Andrea Coppola, Giuseppe De Marchi, Federico Fontana, Filippo Piacentino, Mario Petrillo, Alessandro Taborelli, Salvatore Alessio Angileri, Genti Xhepa, Nicola Macchione, Alessandro Bacuzzi, Alberto Marconi, Anna Maria Ierardi
OBJECTIVES: To affirm technical success, clinical success and safety of fluoroscopically guided transurethral replacement of double-J (DJ) ureteral stents. METHODS: From January 2005 to December 2015, in a follow-up period ranging from 9 to 73 months, we replaced 6167 DJ ureteral stents in 3221 procedures in 1168 patients. All the procedures were performed in the angiography suite under fluoroscopic control. RESULTS: Technical success was achieved in 97...
December 12, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29230533/regulation-of-type-i-collagen-expression-by-microrna-29-following-ionizing-radiation
#15
Hiroyuki Yano, Ryoji Hamanaka, Miki Nakamura-Ota, Juan Juan Zhang, Noritaka Matsuo, Hidekatsu Yoshioka
Radiation-induced fibrosis (RIF) is thought to involve the excessive accumulation of collagen and other extracellular matrix components; previously, we reported that ionizing radiation increased the type I collagen expression and that transforming growth factor (TGF)-β was involved in this increase through activating its downstream mediator, Smad3. A recent study found that microRNAs (miRNAs)-small, noncoding sequences approximately 20 nucleotides long-negatively regulate the gene expression posttranscriptionally, and it has been suggested that miRNAs play essential roles in cellular processes, including fibrosis...
December 11, 2017: Radiation and Environmental Biophysics
https://www.readbyqxmd.com/read/29229412/long-term-voice-outcome-following-radiation-versus-laser-microsurgery-in-early-glottic-cancer
#16
Yue Ma, Rebecca Green, Daniel McCabe, Leanne Goldberg, Peak Woo
OBJECTIVES: Long-term voice outcome (LTVO) after radiation (XRT) or trans-oral laser microsurgery (TLM) is unclear. This study is a multi-modality analysis of LTVO following XRT or TLM in patients with early glottic cancer. We hypothesize that as compared with TLM, LTVO is worse in the XRT group because of progressive fibrosis in the glottic tissue MATERIAL AND METHODS: One hundred and two patients with early glottic carcinoma (carcinoma in situ, T1, T2) were included. Multi-modality voice analyses were performed with self-perception using Voice Handicap Index-10, objective analysis using Analysis of Dysphonia in Speech and Voice Software (Cepstral Spectral Index of Dysphonia score for Consensus Auditory-Perceptual Evaluation of Voice sentences), and perceptual rating by two blinded speech language pathologists (GRBAS scale)...
December 8, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/29223018/targeting-oxidant-dependent-mechanisms-for-the-treatment-of-respiratory-diseases-and-their-comorbidities
#17
REVIEW
Neil C Thomson
Oxidative stress is implicated in the pathogenesis of respiratory diseases, such as COPD and its comorbidities, asthma, idiopathic pulmonary fibrosis and radiation pneumonitis. Antioxidants drugs, such as small molecule thiols, nuclear erythroid-2 related factor 2 activators and catalytic enzyme mimetics have been developed to target oxidant-dependent mechanisms. The therapeutic effects of antioxidants have been generally disappointing. A small number of antioxidants are approved for clinical use, such as the small molecule thiol N-acetyl-l-cysteine for chronic obstructive pulmonary disease, and in the United States, the superoxide dismutase mimetic AEOL 10150 for severe radiation pneumonitis...
December 6, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/29222262/pediatric-leukemia-susceptibility-disorders-manifestations-and-management
#18
REVIEW
Lisa J McReynolds, Sharon A Savage
The clinical manifestations of inherited susceptibility to leukemia encompass a wide phenotypic range, including patients with certain congenital anomalies or early-onset myelodysplastic syndrome (MDS) and some with no obvious medical problems until they develop leukemia. Leukemia susceptibility syndromes occur as a result of autosomal dominant, autosomal recessive, or X-linked recessive inheritance, or de novo occurrence, of germline pathogenic variants in DNA repair, ribosome biogenesis, telomere biology, hematopoietic transcription factors, tumor suppressors, and other critical cellular processes...
December 8, 2017: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/29221318/lung-densitometry-why-how-and-when
#19
REVIEW
Mario Mascalchi, Gianna Camiciottoli, Stefano Diciotti
Lung densitometry assesses with computed tomography (CT) the X-ray attenuation of the pulmonary tissue which reflects both the degree of inflation and the structural lung abnormalities implying decreased attenuation, as in emphysema and cystic diseases, or increased attenuation, as in fibrosis. Five reasons justify replacement with lung densitometry of semi-quantitative visual scales used to measure extent and severity of diffuse lung diseases: (I) improved reproducibility; (II) complete vs. discrete assessment of the lung tissue; (III) shorter computation times; (IV) better correlation with pathology quantification of pulmonary emphysema; (V) better or equal correlation with pulmonary function tests (PFT)...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29218616/noninvasive-assessment-of-hepatic-sinusoidal-obstructive-syndrome-using-acoustic-radiation-force-impulse-elastography-imaging-a-proof-of-concept-study-in-rat-models
#20
So Hyun Park, Seung Soo Lee, Ji-Youn Sung, Kiyong Na, Hyoung Jung Kim, So Yeon Kim, Beom Jin Park, Jae Ho Byun
OBJECTIVES: To determine the feasibility of acoustic radiation force impulse (ARFI) elastography in the evaluation of hepatic sinusoidal obstruction syndrome (SOS) in rat models. METHODS: Rat SOS models of various severities were created by monocrotaline gavage (n = 40) or by intraperitoneal injection of 5-fluorouracil, leucovorin and oxaliplatin (FOLFOX) (n = 16). Liver shear-wave velocity (SWV) was measured using ARFI elastography. Liver samples were analysed for the SOS score, steatosis, lobular inflammation and fibrosis...
December 7, 2017: European Radiology
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