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https://www.readbyqxmd.com/read/29665210/endoscopic-ultrasound-diagnosis-of-merkel-cell-carcinoma-metastasizing-to-pancreas
#1
Juliana Pinho, Diana Montezuma, Paula Monteiro, Mário Dinis-Ribeiro, Pedro Bastos
Merkel cell carcinoma (MCC) is a rare and aggressive primary neuroendocrine tumor of the skin, with a high propensity for local, regional and distant spread1 . However, distant metastasis of MCC to the pancreas are rarely seen. EUS-FNA is an effective tool in the evaluation and differential diagnosis of pancreatic mass lesions3 . Differentiating metastatic pancreatic tumors, especially Merkel cell carcinoma, from primary pancreatic tumor will influence clinical management and therapeutic strategies2 . This article is protected by copyright...
April 17, 2018: Cytopathology: Official Journal of the British Society for Clinical Cytology
https://www.readbyqxmd.com/read/29660532/imaging-in-testicular-epidermoid-cysts
#2
Renwei Liu, Zhengxian Lei, Nengxue Chen, Jinzhi Fang, Yuzhong Zhang
OBJECTIVE: To evaluate the utility of findings on ultrasound and magnetic resonance imaging (MRI) for the preoperative diagnosis of testicular epidermoid cysts (TEC). METHODS: The medical records of five patients treated for TEC at our institution between July 2010 and May 2017 were retrospectively reviewed. RESULTS: Imaging revealed a target or onion skin appearance on ultrasonography and MRI. Pathological examinations showed "bread slag-like" materials within the TEC...
April 5, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29651451/toward-dynamic-lumbar-puncture-guidance-using-needle-based-single-element-ultrasound-imaging
#3
Haichong K Zhang, Younsu Kim, Melissa Lin, Mateo Paredes, Karun Kannan, Abhay Moghekar, Nicholas J Durr, Emad M Boctor
Lumbar punctures (LPs) are interventional procedures that are used to collect cerebrospinal fluid. Since the target window is small, physicians have limited success conducting the procedure. The procedure is especially difficult for obese patients due to the increased distance between bone and skin surface. We propose a simple and direct needle insertion platform, enabling image formation by sweeping a needle with a single ultrasound element at the tip. The needle-shaped ultrasound transducer can not only sense the distance between the tip and a potential obstacle, such as bone, but also visually locate the structures by combining transducer location tracking and synthetic aperture focusing...
April 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29642798/a-retrospective-study-of-a-new-n-butyl-2-cyanoacrylate-glue-ablation-catheter-incorporated-with-application-guiding-light-for-the-treatment-of-venous-insufficiency-twelve-month-results
#4
Turhan Yavuz, Altay Nihat Acar, Huseyin Aydın, Evren Ekingen
Objective This study aims to present the early results of a retrospective study of the use of novel n-butyl-2-cyanoacrylate (VenaBlock)-based nontumescent endovenous ablation with a guiding light for the treatment of patients with varicose veins. Methods Patients with lower limb venous insufficiency were treated with n-butyl-2-cyanoacrylate (VenaBlock Venous Closure System) between April 2016 and July 2016. The study enrolled adults aged 21-70 years with symptomatic moderate to severe varicosities (C2-C4b) and great saphenous vein reflux lasting longer than 0...
January 1, 2018: Vascular
https://www.readbyqxmd.com/read/29628840/lumbar-epidural-depth-using-transverse-ultrasound-scan-and-its-correlation-with-loss-of-resistance-technique-a-prospective-observational-study-in-indian-population
#5
Amit Kumar Chauhan, Rohan Bhatia, Sanjay Agrawal
Background and Objectives: The objective of the present study was to evaluate the skin-epidural space distance as assessed by ultrasonography and conventional loss of resistance (LOR) technique and to find the correlation of epidural depth with body mass index (BMI). Methods: Ninety-eight patients of either sex, American Society of Anesthesiology I/II, BMI <30 kg/m2 requiring lumbar epidural for surgery were enrolled. The epidural space was assessed with a curvilinear ultrasound (US) probe, 2-5 MHz, in the transverse plane at L3-L4 intervertebral space...
April 2018: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/29622044/ultrasound-shear-wave-elastography-of-breast-lesions-correlation-of-anisotropy-with-clinical-and-histopathological-findings
#6
Ya-Ling Chen, Yi Gao, Cai Chang, Fen Wang, Wei Zeng, Jia-Jian Chen
BACKGROUND: Ultrasound shear-wave elastography (SWE) may increase specificity of breast lesion assessment with ultrasound, but elasticity measurements may change with transducer orientation, defined as anisotropy. In this study, we aimed to observe the anisotropy of SWE of breast lesions, and its correlation with clinical and histopathological findings. METHODS: This retrospective study was approved by institutional review board. From June 2014 to June 2015, a total of 276 women (mean age, 48...
April 5, 2018: Cancer Imaging: the Official Publication of the International Cancer Imaging Society
https://www.readbyqxmd.com/read/29620041/primary-mucinous-carcinoma-of-skin-with-a-trichoadenomatous-component-a-rare-case-report
#7
Athota Kavitha, Chennamsetty Kavya, Kovi Sneha, Chennamsetty Teja
Primary mucinous carcinoma of the skin is a rare subtype of eccrine sweat gland tumors. Differentiating it from metastatic adenocarcinomas is important in the management of this condition. We report the case of a 55-year-old female presenting with a painless nodule, which was subsequently diagnosed as primary mucinous carcinoma of skin with a trichoadenomatous component. The possibility of a metastatic adenocarcinoma was ruled out by performing ultrasound abdomen, total body computed tomography, mammogram and colonoscopy...
April 4, 2018: Indian Journal of Dermatology, Venereology and Leprology
https://www.readbyqxmd.com/read/29606996/structural-changes-of-subcutaneous-tissue-valued-by-ultrasonography-in-patients-with-cellulitis-following-treatment-with-the-pnkcelulitis-%C3%A2-program
#8
Esther Roe, Esther Serra, German Guzman, Ignacio Sajoux
Background: Poor eating habits, a sedentary lifestyle, and limited physical activity are predisposing factors for the development of cellulite. The PnKCelulitis® Programme (Pronokal Group, Barcelona, Spain) is a new approach to the treatment of cellulite that combines dietary guidelines, physical exercise, and the application of an anti-cellulite cream. Objective: We sought to objectively and via cutaneous ultrasound assess the benefit of the new multidisciplinary anti-cellulite treatment program and to evaluate any visual changes in the appearance of the skin...
March 2018: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/29601620/multi-center-double-blind-vehicle-controlled-clinical-trial-of-an-alpha-and-beta-defensin-containing-anti-aging-skin-care-regimen-with-clinical-histopathologic-immunohistochemical-photographic-and-ultrasound-evaluation
#9
Amy Taub, Vivian Bucay, Gregory Keller, Jay Williams, Darius Mehregan
BACKGROUND/OBJECTIVES: Anti-aging strategies utilizing stem cells are in the forefront. Alpha and beta defensins are natural immune peptides that have been shown to activate an LGR6-positive stem cell locus in the hair follicle, identified as the source of most new epidermal cells during acute wound healing. We investigated the ability of biomimetic alpha and beta defensin molecules, supplemented with supportive cosmetic ingredients, formulated into three skin care products, at improving the structure and function of aging skin...
April 1, 2018: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29600202/late-and-vague-presentation-of-septic-arthritis-of-hip-in-a-ivdrug-abuser
#10
Anantha Krishnan Raghupathi, Avinash Joshi
Introduction: Septic arthritis of the hip is a rare entity in acute presentation of hip pain in adults. Even though hip is the second most commonly affected joint, adult patients with septic arthritis not related to a surgical procedure represent <0.00001% of total acute admissions. Case Report: We present a 32-year-old female intravenous drug abuser, positive for Hepatitis B and C who had started to inject her femoral veins 2 years ago. She presented with a 10 weeks history of radiating pain in the leg which was full, constant and diffuse in nature with hip stiffness...
November 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/29595535/-jelly-vac-for-negative-pressure-therapy-for-complex-wound-closure-a-report-of-two-cases
#11
Patrick F Bergin, Jason R Wild, Timothy G Weber
CASE: A 35-year-old man sustained an open calcaneal fracture with bone loss, and a 57-year-old woman sustained an avulsion of the entirety of the plantar skin. Both patients were treated with multiple debridements and soft-tissue coverage. "Jelly-VAC" (vacuum-assisted closure) therapy was used after each debridement and during the soft-tissue coverage. CONCLUSION: Jelly-VAC therapy is a promising alternative that allows negative-pressure therapy with the use of ultrasound jelly to prevent air leakage into the wound...
January 2018: JBJS Case Connector
https://www.readbyqxmd.com/read/29576939/detection-of-linear-features-including-bone-and-skin-areas-in-ultrasound-images-of-joints
#12
Artur Bąk, Jakub Segen, Kamil Wereszczyński, Pawel Mielnik, Marcin Fojcik, Marek Kulbacki
Identifying the separate parts in ultrasound images such as bone and skin plays a crucial role in the synovitis detection task. This paper presents a detector of bone and skin regions in the form of a classifier which is trained on a set of annotated images. Selected regions have labels: skin or bone or none. Feature vectors used by the classifier are assigned to image pixels as a result of passing the image through the bank of linear and nonlinear filters. The filters include Gaussian blurring filter, its first and second order derivatives, Laplacian as well as positive and negative threshold operations applied to the filtered images...
2018: PeerJ
https://www.readbyqxmd.com/read/29573792/in-situ-comparison-of-a-mode-ultrasound-tracking-system-and-skin-mounted-markers-for-measuring-kinematics-of-the-lower-extremity
#13
Kenan Niu, Thomas Anijs, Victor Sluiter, Jasper Homminga, André Sprengers, Marco A Marra, Nico Verdonschot
Skin-mounted marker based motion capture systems are widely used in measuring the movement of human joints. Kinematic measurements associated with skin-mounted markers are subject to soft tissue artifacts (STA), since the markers follow skin movement, thus generating errors when used to represent motions of underlying bone segments. We present a novel ultrasound tracking system that is capable of directly measuring tibial and femoral bone surfaces during dynamic motions, and subsequently measuring six-degree-of-freedom (6-DOF) tibiofemoral kinematics...
March 10, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29572055/prospective-evaluation-of-predictors-of-testis-atrophy-after-surgery-for-testis-torsion-in-children
#14
Gwen M Grimsby, Bruce J Schlomer, Vani S Menon, Lauren Ostrov, Melise Keays, Kunj R Sheth, Carlos Villanueva, Candace Granberg, Daniel Dajusta, Martinez Hill, Emma Sanchez, Clanton B Harrison, Micah A Jacobs, Berk Burgu, Halim Hennes, Linda A Baker
OBJECTIVE: To prospectively correlate pain duration, red scrotal skin, ultrasound appearance of testis, and intra-operative testis color to future testis atrophy after acute testicular torsion. METHODS: Consecutive children 2 months to18 years old with unilateral acute scrotum were enrolled in a NIH trans-cutaneous near infrared spectroscopy study, with a sub-group analysis of the true torsion group. Presence/absence of red scrotal skin, pain duration, testicular heterogeneity on pre-operative ultrasound, and intra-operative testis color based on a novel visual chart 5 minutes after detorsion were recorded...
March 20, 2018: Urology
https://www.readbyqxmd.com/read/29570068/fully-automatic-three-dimensional-ultrasound-imaging-based-on-conventional-b-scan
#15
Qinghua Huang, Bowen Wu, Jiulong Lan, Xuelong Li
Robotic ultrasound systems have turned into clinical use over the past few decades, increasing precision and quality of medical operations. In this paper, we propose a fully automatic scanning system for three-dimensional (3-D) ultrasound imaging. A depth camera was first used to obtain the depth data and color data of the tissue surface. Based on the depth image, the 3-D contour of the tissue was rendered and the scan path of ultrasound probe was automatically planned. Following the scan path, a 3-D translating device drove the probe to move on the tissue surface...
April 2018: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/29563748/merkel-cell-carcinoma
#16
Shravan Shanbhag, Amol Amonkar
Merkel cell carcinoma is a primary neuroendocrine tumour of the skin arising from the dermis and extending into the subcutis, occurring commonly in sun-exposed areas of the head and neck of the elderly. Clinically, non-specific erythematous or violaceous firm nodules or small plaques which may be surrounded by small adjacent satellite tumours are seen. Diagnosis of Merkel cell carcinoma is difficult by light microscopy alone and need of ancillary techniques like electron microscopy and immunohistochemistry may be necessary...
March 2018: Indian Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29561416/necrotizing-fasciitis-after-scrotum-skin-injury-in-an-infant-a-case-report
#17
Z X Ren, C L Liu, Q Zhang, F Xu, Y N Zheng, X J Li, J Yang
RATIONALE: Necrotizing fasciitis (NF) is a life-threatening situation that is rare in children, especially infants, and early diagnosis is challenging. Timely identification and broad-spectrum antibiotic and supportive treatment before surgical debridement are very important for survival and may reduce scar formation. PATIENT CONCERNS: A previously healthy 4-month-old infant was admitted to our pediatric intensive care unit (PICU) with a history of fever and cough for 5 days and extreme swelling of the scrotum for one day...
March 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29559330/the-synergistic-fungicidal-effect-of-low-frequency-and-low-intensity-ultrasound-with-amphotericin-b-loaded-nanoparticles-on-c-albicans-in-vitro
#18
Min Yang, Shuang Xie, Vishnu Prasad Adhikari, Yu Dong, Yonghong Du, Dairong Li
It is difficult to effectively eradicate C. albicans using traditional antifungal agents, mainly because the low permeability of the C. albicans cell wall creates strong drug resistance. The aim of this study was to investigate the synergistic fungicidal effect and the underlying mechanisms of low-frequency and low-intensity ultrasound combined with a treatment of amphotericin B-loaded nanoparticles (AmB-NPs) against C. albicans. AmB-NPs were prepared by a poly(lactic-co-glycolic acid) (PLGA) double emulsion method...
March 17, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29558359/-mondor-s-disease-or-systemic-sclerosis-diagnostic-and-therapeutic-dilemmas
#19
Olga Kostrzewa, Paweł Kołodziej, Maria Majdan, Robert Zwolak, Anna Górak, Krzysztof Bar
In this article we have presented a case of 31-year-old male with thickening of the skin and tender cord of superficial veins of the penis and laboratory findings of the high titer of PM/Scl-100 antibodies in the serum. The patient was referred to the Rheumatology Department due to suspected systemic sclerosis. The HRCT scan of his lungs revealed fibrous degeneration and ground-glass opacity in the lower lobes. Capillaroscopy showed abnormalities, which were not typical for systemic sclerosis. In Doppler ultrasound examination of penis, superficial dorsal and circumflex veins thrombosis and inflammatory infiltration were observed...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29556769/sequential-high-intensity-focused-ultrasound-hifu-ablation-in-the-treatment-of-benign-multinodular-goitre-an-observational-retrospective-study
#20
Brian H H Lang, Yu-Cho Woo, Keith Wan-Hang Chiu
OBJECTIVES: Assessing the efficacy and safety of sequential high-intensity focused ultrasound (HIFU) ablation in a multinodular goitre (MNG) by comparing them with single HIFU ablation. METHODS: One hundred and four (84.6%) patients underwent single ablation of a single nodule (group I), while 19 (15.4%) underwent sequential ablation of two relatively-dominant nodules in a MNG (group II). Extent of shrinkage per nodule [by volume reduction ratio (VRR)], pain scores (by 0-10 visual analogue scale) during and after ablation, and rate of vocal cord palsy (VCP), skin burn and nausea/vomiting were compared between the two groups...
March 19, 2018: European Radiology
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