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Thymus and ultrasound

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https://www.readbyqxmd.com/read/29620644/intrathyroidal-ectopic-thymus-in-children-a-benign-lesion
#1
Myung Hoon Bang, JinShik Shin, Kwan Seop Lee, Min Jae Kang
As ultrasound is commonly used these days, more and more lesions are found incidentally, including simple cysts, isoechoic nodules, and hypoechoic nodules, such as ectopic thymus. We here report the prevalence of ectopic thymus and its natural course.We retrospectively reviewed the charts of 690 subjects (342 males, 348 females) who were under 18 years old and had undergone neck or thyroid ultrasound at Hallym University Sacred Heart Hospital from January 2014 to June 2017. Ectopic thymus was defined when the incidental lesion was hypo- to iso-echoic compared to adjacent muscles with vascularity and did not have a connection to the thymus in the mediastinum...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29577488/cytomorphology-and-sonographic-features-of-ectopic-thymic-tissue-diagnosed-in-paediatric-fna-biopsies
#2
F A Escobar, L Pantanowitz, J L Picarsic, F E Craig, J P Simons, P A Viswanathan, S Yilmaz, S E Monaco
INTRODUCTION: Ectopic thymic tissue can arise as an asymptomatic neck mass, which may be detected on imaging studies. The aim of this study was to determine the incidence of ectopic thymic tissue in paediatric FNAs and to the correlate clinical, radiological and cytomorphological findings. METHODS: FNAs in children with neck and mediastinal lesions performed between January 2012 and July 2016 were reviewed for cases of ectopic thymus. These were then evaluated and correlated with the cytology findings...
March 26, 2018: Cytopathology: Official Journal of the British Society for Clinical Cytology
https://www.readbyqxmd.com/read/29556698/-specific-characteristics-of-chest-x%C3%A2-ray-in-childhood-basics-for-radiologists
#3
K Schneider
The radiographic technique of pediatric chest X‑rays is substantially different from that in adults. In nearly all cases ap/pa X‑rays are sufficient and lateral radiographs are rarely needed. In the first years of life the thymus may overshadow the heart, the great vessels and the lung hila. The most important anatomical structures essential for diagnosing pathological findings of the lungs and mediastinum are the trachea with the bifurcation and the main bronchi with the adjacent great vessels. For the assessment of distended lungs and intrathoracic consolidations, fundamental knowledge of the anatomy in childhood and malformations which can involve the airways, the lungs, the heart, as well as systemic and pulmonary vessels are indispensable...
March 19, 2018: Der Radiologe
https://www.readbyqxmd.com/read/29519406/high-velocity-pulse-biopsy-device-enables-controllable-and-precise-needle-insertion-and-high-yield-tissue-acquisition
#4
Kai-Uwe Schässburger, Stefan Paepke, Ariel Saracco, Edward Azavedo, Christina Ekström, Hans Wiksell
Minimally invasive biopsies are a cornerstone of breast cancer management with ultrasound being the preferred guidance modality. New developments in breast cancer management and advances in imaging technologies bring new challenges to current biopsy methodologies. A new biopsy device (NeoNavia® biopsy system, 14 G) was developed. It incorporates a pneumatic needle insertion mechanism that is intended to provide better control of needle progression and enable stepwise insertion without noticeable deformation or displacement of surrounding tissue as visualized under ultrasound...
February 2018: Physica Medica: PM
https://www.readbyqxmd.com/read/29429729/ultrasound-assisted-extraction-of-antimicrobial-compounds-from-thymus-daenensis-and-silybum-marianum-antimicrobial-activity-with-and-without-the-presence-of-natural-silver-nanoparticles
#5
Mohammad Safarpoor, Mehrorang Ghaedi, Arash Asfaram, Masoumeh Yousefi-Nejad, Hamedreza Javadian, Hossein Zare Khafri, Marzieh Bagherinasab
The present study is devoted to prepare a new antibacterial and antifungal agent based on in situ-synthesized silver nanoparticles at room temperature using Rosmarinus officinalis (R. officinalis) leaf extract. The Ag-NPs characterization by UV-visible, SEM, TEM and XRD revealed that the particles sizes were in the range of 10-33 nm. In this study, hydroalcoholic extracts were used with ultrasonic method. Ultrasonication has recently received attention as a novel bioprocessing tool for process intensification in many areas of downstream processing...
April 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29193099/cytologic-findings-of-spindle-epithelial-tumor-with-thymus-like-elements
#6
Maria N Baste Subia, Paul Digoy, Martina Hum, Zhongxin Yu, Rachel Conrad
Spindle epithelial tumor with thymus-like elements (SETTLE) is a rare and morphologically unique biphasic pediatric thyroid tumor of low malignant potential. There are less than 50 cases reported in the literature and few reported metastases. Despite the common usage of needle aspiration for thyroid and lymph node evaluation, cytologic descriptions of SETTLE are rare and tend to focus on a hypercellular biphasic appearance. We report aspirate findings of early cystic lymph node metastases in a 14-year-old girl, showing abundant matrix and low cellularity...
February 2018: Laryngoscope
https://www.readbyqxmd.com/read/29136677/thymus-growth-and-fetal-immune-responses-in-diabetic-pregnancies
#7
Katharina Warncke, Ramona Lickert, Stephanie Eitel, Karl-Philipp Gloning, Ezio Bonifacio, Eva-Maria Sedlmeier, Petra Becker, Jan Knoop, Andreas Beyerlein, Anette-Gabriele Ziegler
Type 1 diabetes (T1D) during pregnancy possibly affects the development of the thymus and the maturation of the immune system in the offspring. The aim of the ImmunDiabRisk study was to investigate thymus growth and maternal and fetal immune responses in pregnancies with and without T1D. The thymus circumferences of the fetuses of pregnant women with T1D (n=49) and without diabetes (n=59) were measured using ultrasound around the 29th gestational week and standardized for gestational age. Simultaneously, the frequencies and total numbers of cell markers were analyzed by flow cytometry in maternal peripheral blood, and at birth in umbilical cord blood...
November 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/29134304/outcome-of-thyroid-carcinoma-showing-thymus-like-differentiation-in-patients-undergoing-radical-resection
#8
Wenwu Dong, Ping Zhang, Jian Li, Liang He, Zhihong Wang, Ting Zhang, Liang Shao, Hao Zhang
BACKGROUND: Carcinoma showing thymus-like differentiation (CASTLE) is a rare malignant tumor of the thyroid. It is difficult to diagnose, and there is no universally recognized therapeutic regimen. This study aims to define the clinicopathological features and discuss the optimal management of CASTLE. METHODS: We retrospectively analyzed six patients with CASTLE who accepted surgery at the First Hospital of China Medical University between January 2010 and December 2015...
November 13, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/29057456/small-fetal-thymus-and-adverse-obstetrical-outcome-a-systematic-review-and-a-meta-analysis
#9
REVIEW
Claudia Caissutti, Alessandra Familiari, Asma Khalil, Maria E Flacco, Lamberto Manzoli, Giovanni Scambia, Angelo Cagnacci, Francesco D'antonio
INTRODUCTION: The aim of this study was to explore the association between small fetal thymus on ultrasound and adverse obstetrical outcome. MATERIAL AND METHODS: Medline, Embase, Cochrane and Web of Science databases were searched. Primary outcome was the risk of preterm birth before 37 and 34 weeks of gestation in fetuses with, compared to those without, a small thymus on ultrasound. SECONDARY OUTCOMES: occurrence of chorioamnionitis, intrauterine growth restriction, neonatal sepsis, gestational age at birth, birthweight, neonatal morbidity and preeclampsia...
February 2018: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28987375/phosphorylation-and-antiaging-activity-of-polysaccharide-from-trichosanthes-peel
#10
Min Zhang, Nana Su, Qianli Huang, Qiang Zhang, Yufen Wang, Jinglei Li, Ming Ye
Polysaccharides from Trichosanthes peel (TPP) were obtained by ultrasound-assisted extraction. TPP-1 was separated from the TPP by Sephadex G-100 column chromatography. Phosphorylation of TPP-1 was carried out and phosphorylated TPP-1 was named as PTTP-1. The results of infrared spectra, (13)C nuclear magnetic resonance spectra and (31)P nuclear magnetic resonance spectra showed that the main structure of PTPP-1 was similar to that of TPP-1 and -H2PO3 groups which were conjugated to C-6 of →4)-α-D-Manp-(1→, C-4 of →6)-α-D-Galp-(1→, C-2 and C-3 of →1)-α-L-Araf, C-2 of →1)-α-L-Araf-(3→, and C-6 and C-3 of →1)-α-D-Glcp...
October 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28732981/sonochemical-effect-on-two-new-ruthenium-ii-complexes-with-ligand-e-n-6-bromopyridin-2-yl-methylene-4-methylthio-aniline-precursors-for-synthesis-of-ruo-2-nanoparticles
#11
Chang Jin, Fahime Bigdeli, Kuan-Guan Liu, Hosein Ghasempour, Mao-Lin Hu, Ali Morsali
Two novel Ru(II) complexes [(η6 -p-cymene)RuCl(L2)]PF6 (R2) and [(η6 -C6 H6 )RuCl(L2)]PF6 (R4), with ligand (E)-N-((6-bromopyridin-2-yl)methylene)-4-(methylthio)aniline (L2), were synthesized and characterized by elemental analysis,1 H NMR,13 C NMR and IR spectroscopy. Based on X-ray crystallography studies, complexes R2 and R4 have coordination environments with formulated (η6 -p-cymene)Ru(N2 Cl) and (η6 -C6 H6 )Ru(N2 Cl), respectively. The thermal stabilities of compounds R2 and R4 were studied by thermal gravimetric (TG) and differential scanning calorimetry (DSC)...
November 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28569558/persistent-left-superior-vena-cava-in-fetuses-an-autopsy-series
#12
Deepa Ramakrishnan, Shanthi Chidambarathanu, Lata Murli, John Micheal, Sujatha Jagadeesh, Indrani Suresh, Suresh Seshadri
OBJECTIVE: To review fetal autopsy reports with persistent left superior vena cava (PLSVC) and identify its associations. MATERIALS AND METHODS: Autopsy reports of all fetuses diagnosed with PLSVC in our center from January 2011 to December 2015 were reviewed. Fetuses less than 15 weeks gestational age along with autolyzed and damaged hearts were excluded from the study. The study group was compared with controls during this period. RESULTS: Prenatal ultrasound detection rate of PLSVC was 13...
August 2017: Fetal and Pediatric Pathology
https://www.readbyqxmd.com/read/28511686/intrathymic-injection-of-hematopoietic-progenitor-cells-establishes-functional-t-cell-development-in-a-mouse-model-of-severe-combined-immunodeficiency
#13
Andrea Z Tuckett, Raymond H Thornton, Richard J O'Reilly, Marcel R M van den Brink, Johannes L Zakrzewski
BACKGROUND: Even though hematopoietic stem cell transplantation can be curative in patients with severe combined immunodeficiency, there is a need for additional strategies boosting T cell immunity in individuals suffering from genetic disorders of lymphoid development. Here we show that image-guided intrathymic injection of hematopoietic stem and progenitor cells in NOD-scid IL2rγnull mice is feasible and facilitates the generation of functional T cells conferring protective immunity...
May 16, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28440352/intrathyroidal-ectopic-thymus-in-children-a-sonographic-survey
#14
Adnan Kabaalioğlu, Murat Alp Öztek, Uğur Kesimal, Kağan Çeken, Emel Durmaz, Ali Apaydın
AIMS: Intrathyroidal ectopic thymus (IET) is being increasingly reported in the radiology literature. Most of the reports are of individual cases or small series and prevalence and natural course of the pathology is not well known. The purpose of this study is to establish the prevalence of IET in children and report long term follow-up results. MATERIAL AND METHODS: In 180 children who were examined by ultrasound (US) for other reasons, 7 patients were indentified with IET...
April 22, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28393508/-cervical-thymic-cyst-in-childhood
#15
M Haro-García, J Crespo Del Hierro, R de la Fuente-Cañibano, M A Alañón-Fernández
Cervical thymus cyst is a rare cause of neck mass in children. . Approximately 90 cases have been described, and just a few have been published in Spanish literature. They usually appear in early children and are diagnosed as brachial cyst. We report the case of a 6 year old boy with a swelling on the right side of the neck. The swelling had appeared a few months before. Ultrasound examination of a neck mass and MRI showed a cystic mass compatible with possible branchial cyst. Excision of the tumor was performed...
July 10, 2016: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
https://www.readbyqxmd.com/read/28288591/correlates-of-thymus-size-and-changes-during-treatment-of-children-with-severe-acute-malnutrition-a-cohort-study
#16
Maren Johanne Heilskov Rytter, Hanifa Namusoke, Christian Ritz, Kim F Michaelsen, André Briend, Henrik Friis, Dorthe Jeppesen
BACKGROUND: The impairment of immune functions associated with malnutrition may be one reason for the high mortality in children with severe acute malnutrition (SAM), and thymus atrophy has been proposed as a marker of this immunodeficiency. The aim of this study was to identify nutritional and clinical correlates of thymus size in children with SAM, and predictors of change in thymus size with nutritional rehabilitation. METHODS: In an observational study among children aged 6-59 months admitted with SAM in Uganda, we measured thymus area by ultrasound on hospital admission to treatment with F75 and F100, on hospital discharge and after 8 weeks of nutritional rehabilitation with ready-to-use therapeutic food, as well as in well-nourished healthy children...
March 14, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28271526/sonographic-measurement-of-the-fetal-thymus-relationship-with-maternal-obesity
#17
Melahat Yildirim, Ali Ipek, Gulcan Dauletkazin, Busra Demir Cendek, Saniye Gezegen, Raziye Desdicioglu, Ayse Filiz Avsar Yavuz
BACKGROUND: The purpose of this study was to evaluate the influence of maternal obesity on the size of the fetal thymus. METHODS: The study population consisted of 138 pregnant women who were divided into two groups based on their body mass index (BMI): Normal-weight group (n = 97; BMI: 18-25 kg/m(2) ) and obese group (n = 41; BMI: ≥ 30 kg/m(2) ). All participants underwent routine second-trimester prenatal ultrasound (US) screening at 20-25 weeks of gestation...
March 8, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/27976570/aberrant-cervical-thymus-and-the-role-of-ultrasonography-a-case-report
#18
Emre Ünal, Hanife Gülden Düzkalır, Seray Kurt-Güney, Emek Tolga Işıldak
Ectopic/aberrant cervical thymic tissue is a rare cause of neck mass and usually detected incidentally. Aberrant thymic tissue can occur anywhere in the course of thymic descent from the angle of the mandible to the superior mediastinum. We report a case of aberrant cervical thymus demonstrated by ultrasound.
2016: Turkish Journal of Pediatrics
https://www.readbyqxmd.com/read/27942480/diagnostic-imaging-of-benign-and-malignant-neck-masses-in-children-a-pictorial-review
#19
REVIEW
Ruth Elizabeth Brown, Srikrishna Harave
Neck masses are frequently encountered in pediatric medicine, and can present a diagnostic dilemma for the clinicians involved. There are several means by which neck masses in children can be subdivided, for example by age at presentation, anatomical location including compartments and fascia of the neck, their classical appearance when imaged, or by etiology. When imaging children the clinicians must be mindful of radiation exposure and as such ultrasound (US) is often attempted first. Cross sectional imaging can be helpful for problem solving with CT being particularly useful for assessing the patient in more acute scenarios, for example when there is airway compromise...
October 2016: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/27862004/sonographic-measurement-of-fetal-thymus-size-in-uncomplicated-singleton-pregnancies
#20
Chayada Tangshewinsirikul, Panyu Panburana
PURPOSE: To establish sonographic reference ranges of the normal fetal thymus size between 17 and 38 weeks of gestational age (GA). METHODS: The study was conducted between April 1 and December 31, 2013. Low-risk singleton pregnancies without obstetrical and medical complications at the GAs between 17 and 38 weeks were recruited for thymus measurement. The fetal thymus was identified on transabdominal sonography at the three-vessel view. Maximal transverse diameter, perimeter, and thymus/thoracic ratio were measured...
March 4, 2017: Journal of Clinical Ultrasound: JCU
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