scholarly journals ACCIDENTAL INGESTION OF CYLINDRICAL BATTERIES IN CHILDREN – INTERVENTIONAL OR CONSERVATIVE MANAGEMENT?

2021 ◽  
Vol 70 (2) ◽  
pp. 161-164
Author(s):  
Gabriela Păduraru ◽  
◽  
Andreea-Mădălina Nichita ◽  
Florin Filip ◽  
Elena Tataranu ◽  
...  
Keyword(s):  
Conservative Management ◽  
Clinical Picture ◽  
Rare Condition ◽  
Pediatric Emergency ◽  
The Other ◽  
Emergency Endoscopy ◽  
Endoscopic Removal ◽  
Accidental Ingestion ◽  
X Ray ◽  
Individual Basis

Ingestion of cylindrical batteries is a rare condition in children. There are no clear guidelines regarding the appropriate management of this condition. We present 2 such cases; one patient required endoscopic removal of the battery, while in the other one the battery passed spontaneously. We recommend that such cases be admitted for monitoring and treated on an individual basis, according to the clinical picture, X-ray data and the availability of pediatric emergency endoscopy.

Microchemical imaging in biomedical research

1992 ◽  
Vol 50 (2) ◽  
pp. 1118-1119
Author(s):  
P. Ingram
Keyword(s):  
Data Analysis ◽  
Electron Probe ◽  
The Other ◽  
X Ray ◽  
Cell Element ◽  
Physiological Information ◽  
Functional States ◽  
Elemental Maps ◽  
Electron Energy Loss ◽  
Secondary Ion

It is well established that unique physiological information can be obtained by rapidly freezing cells in various functional states and analyzing the cell element content and distribution by electron probe x-ray microanalysis. (The other techniques of microanalysis that are amenable to imaging, such as electron energy loss spectroscopy, secondary ion mass spectroscopy, particle induced x-ray emission etc., are not addressed in this tutorial.) However, the usual processes of data acquisition are labor intensive and lengthy, requiring that x-ray counts be collected from individually selected regions of each cell in question and that data analysis be performed subsequent to data collection. A judicious combination of quantitative elemental maps and static raster probes adds not only an additional overall perception of what is occurring during a particular biological manipulation or event, but substantially increases data productivity. Recent advances in microcomputer instrumentation and software have made readily feasible the acquisition and processing of digital quantitative x-ray maps of one to several cells.

CLINICAL CASE OF A MALIGNANT PECOMA OF THE LUNG

2019 ◽  
Vol 65 (5) ◽  
pp. 756-759
Author(s):  
Mikhail Postolov ◽  
Nadezhda Kovalenko ◽  
K. Babina ◽  
Stanislav Panin ◽  
Yelena Levchenko ◽  
...  
Keyword(s):  
Good Condition ◽  
Lung Neoplasm ◽  
Rare Condition ◽  
Epithelioid Cell ◽  
X Ray ◽  
Perivascular Epithelioid Cell ◽  
Mesenchymal Neoplasm ◽  
Preoperative Ct ◽  
Lymph Duct ◽  
The Right

Perivascular epithelioid cell tumor (PEComa) is a rare mesenchymal neoplasm characterized by expression of both mela-nocytic and smooth muscle markers. Only 10 primary malignant lung PEComas have been reported up to date. We report a 59-year-old male who presented with a lung neoplasm, found during the routine X-ray examination. Preoperative CT-scan revealed the 3,5-cm-sized mass, located at the border of the upper, middle and lower lobes of the right lung. Patient underwent a thoracotomy, resection of the upper, middle and lower lobes of the right lung accompanied with mediastinal lymphadenectomy. After surgery, chylothorax was revealed. Conservative treatment was unsuccessful, so we performed laparoscopic clipping of the thoracic lymph duct. Patient was dismissed from hospital on the 10-th day after the second operation in good condition. In this report, we intend to increase the limited knowledge relating to natural history and optimal treatment of such a rare condition as a primary malignant lung PEComa.

The Electron Effect of Aromatic Group: Control Conformation of 2-Aromatic Cyclododecanone Derivatives

2020 ◽  
Vol 24 (10) ◽  
pp. 1139-1147
Author(s):  
Yang Mingyan ◽  
Wang Daoquan ◽  
Wang Mingan
Keyword(s):  
1H Nmr ◽  
13C Nmr ◽  
Nmr Spectra ◽  
Coupling Constants ◽  
The Other ◽  
Repulsive Interaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electron Effect ◽  
Group Control

2-Phenylcyclododecanone and 2-cyclohexylcyclododecanone derivatives were synthesized and characterized by 1H NMR, 13C NMR, HR-ESI-MS and X-ray diffraction. Their preferred conformations were analyzed by the coupling constants in the 1H NMR spectra and X-ray diffraction, which showed the skeleton ring of these derivatives containing [3333]-2-one conformation, and the phenyl groups were located at the side-exo position of [3333]-2-one conformation due to the strong π-π repulsive interaction between the π- electron of benzene ring and π-electron of carbonyl group. The cyclohexyl groups were located at the corner-syn or the side-exo position of [3333]-2-one conformation depending on the hindrance of the other substituted groups. The π-π electron effect played a crucial role in efficiently controlling the preferred conformation of 2-aromatic cyclododecanone and the other 2-aromatic macrocyclic derivatives with the similar preferred square and rectangular conformations.

Chest X-ray (mania) in pediatric emergency departments

10.2223/1158 ◽  
2004 ◽  
Vol 80 (2) ◽  
pp. 163-166
Author(s):  
Jayme Murahovschi
Keyword(s):  
Emergency Departments ◽  
Pediatric Emergency ◽  
X Ray ◽  
Chest X Ray

Spontaneous Pneumomediastinum: Uncommon Cause of Air Leak in Late Preterm Neonate

2021 ◽  
Vol 35 (2) ◽  
pp. 93-94
Author(s):  
Jyotsna Bhushan ◽  
Shagufta Iqbal ◽  
Abhishek Chopra
Keyword(s):  
Respiratory Distress ◽  
Conservative Management ◽  
Preterm Neonate ◽  
Late Preterm ◽  
Intravenous Fluids ◽  
X Rays ◽  
Blood Gas ◽  
X Ray ◽  
Spontaneous Pneumomediastinum ◽  
Chest X Ray

A clinical case report of spontaneous pneumomediastinum in a late-preterm neonate, chest x-ray showing classical “spinnaker sail sign,” which was managed conservatively and had excellent prognosis on conservative management. Respiratory distress in a preterm neonate is a common clinical finding. Common causes include respiratory distress syndrome, transient tachypnea of the newborn, pneumonia, and pneumothorax. Pneumomediastinum is not very common cause of respiratory distress and more so spontaneous pneumomediastinum. We report here a preterm neonate with spontaneous pneumomediastinum who had excellent clinical recovery with conservative management. A male baby was delivered to G3P1A1 mother at 34 + 6 weeks through caesarean section done due to abruptio placenta. Apgar scores were 8 and 9. Maternal antenatal history was uneventful and there were no risk factors for early onset sepsis. Baby had respiratory distress soon after birth with Silverman score being 2/10. Baby was started on oxygen (O2) by nasal prongs through blender 0.5 l/min, FiO2 25%, and intravenous fluids. Blood gas done was normal. Possibility of transient tachypnea of newborn or mild hyaline membrane disease was kept. Respiratory distress increased at 20 h of life (Silverman score: 5), urgent chest x-ray done revealed “spinnaker sign” suggestive of pneumomediastinum, so baby was shifted to O2 by hood with FiO2 being 70%. Blood gas repeated was normal. Baby was managed conservatively on intravenous fluids and O2 by hood. Baby was gradually weaned off from O2 over next 5 days. As respiratory distress decreased, baby was started on orogastric feed, which baby tolerated well and then was switched to oral feeds. Serial x-rays showed resolution of pneumomediastinum. Baby was discharged on day 7 of life in stable condition on breast feeds and room air.

scholarly journals Acute otitis media in an infant complicated with osteoarthritis of temporomandibular joint and sub-periosteal abscess of the clavicle

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Kaoutar Cherrabi ◽  
Hind Cherrabi
Keyword(s):  
Septic Arthritis ◽  
Temporomandibular Joint ◽  
Nutritional Assessment ◽  
Acute Otitis Media ◽  
Clinical Signs ◽  
Rare Condition ◽  
Pediatric Emergency ◽  
Ear Infections ◽  
The Right

Abstract Background Otomastoiditis is a very frequent affection and a current complication of mal-treated benign ear infections in children. However, this a very rare case of the association of two rare complications of otomastoiditis in a newborn. On the one hand, septic arthritis of the temporomandibular joint which is a very rare condition that is difficult to diagnose, and when unrecognized or not treated accordingly, it can resolve in serious infectious complication and or definitive injury to the temporomandibular joint. On the other hand, osteomyelitis of the clavicle is also very rare, and only a few cases have been cited in the literature concerning infants. Case presentation This 46-day-old infant was brought to pediatric emergency consultation for 2 swelling inflammatory bulges, one in the right mastoid and pre-auricular regions, and another in the right basi-cervical area. The infant was hypertrophic febrile, hypotonic, and pale. He had preserved archaic reflexes. Besides, blood test showed an inflammatory syndrome, inflammatory anemia, and no other abnormalities. Upon supplementary computed tomodensitometry exam, the diagnosis of a combination of septic arthritis of the right temporomandibular joint and sub-periosteal abscess of the ipsilateral clavicle in a context of hypotrophy and malnutrition was suspected. A pus sample was obtained for bacteriological evaluation, after which the infant had a course of intravenous associated antibiotics, along with nutritional assessment and management. Surgical drainage of both collections was performed. The 6-month follow-up was satisfactory, without clinical signs of functional impact on temporomandibular joint, or acromioclavicular joint. Conclusion This work stresses the necessity of thorough clinical examination of infants even in cases of benign ear infections, as well as the importance of adapted treatment and follow-up, which could allow early diagnosis, appropriate treatment, or even prevention of severe complications that can be associated with such benign conditions.

scholarly journals Adhesion of Triple-Negative Breast Cancer Cells under Fluorescent and Soft X-ray Contact Microscopy

2021 ◽  
Vol 22 (14) ◽  
pp. 7279
Author(s):  
Paulina Natalia Osuchowska ◽  
Przemysław Wachulak ◽  
Wiktoria Kasprzycka ◽  
Agata Nowak-Stępniowska ◽  
Maciej Wakuła ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Breast Cancer Cells ◽  
Cell Imaging ◽  
Triple Negative ◽  
The Other ◽  
Promising Technique ◽  
X Ray ◽  
Microscopy Technique ◽  
Cancer Cell Adhesion

Understanding cancer cell adhesion could help to diminish tumor progression and metastasis. Adhesion mechanisms are currently the main therapeutic target of TNBC-resistant cells. This work shows the distribution and size of adhesive complexes determined with a common fluorescence microscopy technique and soft X-ray contact microscopy (SXCM). The results presented here demonstrate the potential of applying SXCM for imaging cell protrusions with high resolution when the cells are still alive in a physiological buffer. The possibility to observe the internal components of cells at a pristine and hydrated state with nanometer resolution distinguishes SXCM from the other more commonly used techniques for cell imaging. Thus, SXCM can be a promising technique for investigating the adhesion and organization of the actin cytoskeleton in cancer cells.

scholarly journals Automatic Evaluation of the Lung Condition of COVID-19 Patients Using X-ray Images and Convolutional Neural Networks

2021 ◽  
Vol 11 (1) ◽  
pp. 28
Author(s):  
Ivan Lorencin ◽  
Sandi Baressi Šegota ◽  
Nikola Anđelić ◽  
Anđela Blagojević ◽  
Tijana Šušteršić ◽  
...  
Keyword(s):  
Neural Networks ◽  
Convolutional Neural Networks ◽  
Clinical Picture ◽  
Data Augmentation ◽  
Lower Amount ◽  
Training Procedure ◽  
X Ray ◽  
Severe Clinical Picture ◽  
Lung Condition

COVID-19 represents one of the greatest challenges in modern history. Its impact is most noticeable in the health care system, mostly due to the accelerated and increased influx of patients with a more severe clinical picture. These facts are increasing the pressure on health systems. For this reason, the aim is to automate the process of diagnosis and treatment. The research presented in this article conducted an examination of the possibility of classifying the clinical picture of a patient using X-ray images and convolutional neural networks. The research was conducted on the dataset of 185 images that consists of four classes. Due to a lower amount of images, a data augmentation procedure was performed. In order to define the CNN architecture with highest classification performances, multiple CNNs were designed. Results show that the best classification performances can be achieved if ResNet152 is used. This CNN has achieved AUCmacro¯ and AUCmicro¯ up to 0.94, suggesting the possibility of applying CNN to the classification of the clinical picture of COVID-19 patients using an X-ray image of the lungs. When higher layers are frozen during the training procedure, higher AUCmacro¯ and AUCmicro¯ values are achieved. If ResNet152 is utilized, AUCmacro¯ and AUCmicro¯ values up to 0.96 are achieved if all layers except the last 12 are frozen during the training procedure.

scholarly journals X-ray variability of the HMXB Cen X-3: evidence for inhomogeneous accretion flows.

2020 ◽  
Author(s):  
G Sanjurjo-Ferrín ◽  
J M Torrejón ◽  
K Postnov ◽  
L Oskinova ◽  
J J Rodes-Roca ◽  
...  
Keyword(s):  
Equivalent Width ◽  
Compact Star ◽  
Timing Analysis ◽  
Roche Lobe ◽  
The Other ◽  
Emission Lines ◽  
High Mass ◽  
X Ray ◽  
Accretion Flows ◽  
Inner Radius

Abstract Cen X-3 is a compact high mass X-ray binary likely powered by Roche lobe overflow. We present a phase-resolved X-ray spectral and timing analysis of two pointed XMM-Newton observations. The first one took place during a normal state of the source, when it has a luminosity LX ∼ 1036 erg s−1. This observation covered orbital phases φ = 0.00 − 0.37, i.e. the egress from the eclipse. The egress lightcurve is highly structured, showing distinctive intervals. We argue that different intervals correspond to the emergence of different emitting structures. The lightcurve analysis enables us to estimate the size of such structures around the compact star, the most conspicuous of which has a size ∼0.3R*, of the order of the Roche lobe radius. During the egress, the equivalent width of Fe emission lines, from highly ionized species, decreases as the X-ray continuum grows. On the other hand, the equivalent width of the Fe Kα line, from near neutral Fe, strengthens. This line is likely formed due to the X-ray illumination of the accretion stream. The second observation was taken when the source was 10 times X-ray brighter and covered the orbital phases φ = 0.36 − 0.80. The X-ray lightcurve in the high state shows dips. These dips are not caused by absorption but can be due to instabilities in the accretion stream. The typical dip duration, of about 1000 s, is much longer than the timescale attributed to the accretion of the clumpy stellar wind of the massive donor star, but is similar to the viscous timescale at the inner radius of the accretion disk.

Sign in / Sign up

Export Citation Format

Share Document