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Yosuke Akamatsu,Santiago Gomez-Paz,Daniel A. Tonetti,David Vergara-Garcia,Viraj M. Moholkar,Anna Luisa Kuhn,Kohei Chida,Jasmeet Singh,Katyucia de Macedo Rodrigues,Francesco Massari,Justin M. Moore,Chr 대한뇌혈관외과학회 2022 Journal of Cerebrovascular and Endovascular Neuros Vol.24 No.3
Objective: Transarterial Onyx embolization is the mainstay of intracranial non-cavernous dural arteriovenous fistulas (dAVFs) treatment. Although the dural arterial supply varies depending on the location, the impact of arterial access on treatment outcomes has remained unclear. The aim of this study was to characterize factors as sociated with complete obliteration following transarterial Onyx embolization, with a special focus on arterial access routes and dAVF location.Methods: A retrospective analysis of the patients who underwent transarterial Onyx embolization for intracranial dAVFs at two academic institutions was performed. Patients with angiographic follow-up were considered eligible to investigate the impact of the arterial access on achieving complete obliteration.Results: Sixty-eight patients underwent transarterial Onyx embolization of intracranial dAVFs. Complete obliteration was achieved in 65% of all treated patients and in 75% of those with cortical venous reflux. Multivariable analysis identified middle meningeal artery (MMA) access to be a significant independent predictive factor for complete obliteration (OR, 2.32; 95% CI, 1.06-5.06; <i>p</i>=0.034). Subgroup analysis showed that supratentorial and lateral cerebellar convexity dAVFs (OR, 5.72, 95% CI, 1.89-17.33, <i>p</i>=0.002), and Borden type III classification at pre-treatment (OR, 3.13, 95% CI, 1.05- 9.35, <i>p</i>=0.041), were independent predictive factors for complete obliteration following embolization through the MMA.Conclusions: MMA access is an independent predictive factor for complete obliteration following transarterial Onyx embolization for intracranial non-cavernous dAVFs. It is particularly effective for supratentorial and lateral cerebellar convexity dAVFs and those that are Borden type III.
Poster Session:PS 0572 ; Oncology : Lung Cancer with Revealing Skin Metastasis
( Miguel Arderius ),( Nayive Gomez ),( David Fortes ),( Alda Jordao ),( Gloria Silva ) 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1
Introduction: Skin metastization is an uncommon manifestation of carcinomas (3-4% incidence in some series). Lung origin is more common in men (24 versus 4% in women, in recent meta-analysis), being the fi rst manifestation in 0.8% of cases. It appears in advanced stage and has poor prognosis. Case Presentation: 78 year old man, smoker, went to the ER because of the appearance, in the last 3 months, of 2 cutaneous nodules in the thorax, with progressive enlargement and infi ammatory signs. Concomitantly, he showed asthenia, adynamia, anorexia, exertional dyspnea and weight loss (10kg), symptoms the patient didn`t quite value, showing a very good Performance Status (Karnofsky scoring 70%). In observation, 2 solid subcutaneous nodules (3cm), parasternal, violaceous, ulcerated, non adherent, painful; and 2 similar nodules, smaller and non ulcerated, palpable in the inguinal regions. In the thorax radiography, peribronchial mass on the right, with irregular contour. Thoraco-abdomino-pelvic CT showed a perihilar mass (8cm) in the right lung, obliterating the anterior segment of the superior lobe; pulmonary artery compression; mediastinal pleura invasion; multiple adenomegalies; adrenal gland metastization; and subcutaneous masses in the anterior thoracic wall, abdominal wall and gluteal region. Analytically, elevated NSE (142μg/L). Bronchofi broscopy revealed complete bronchial obstruction, with the biopsy confi rming a Small Cell Carcinoma. The biopsies from the skin lesions had a mixed pattern (Combined Small Cell and Large Cell Neuroendocrine Carcinoma). He was discharged to Pneumological Oncology, where he started chemotherapy. Conclusion: Despite the fact that skin metastasis are rare, it`s timely recognition may be critical to the prognosis. The Internist should therefore be aware of its existence. In this case, the patient kept a good performance status despite the advanced disease.
Jordan Nantais,Muhammad Mansour,Charles de Mestral,Shiva Jayaraman,David Gomez Korean Association of Hepato-Biliary-Pancreatic Su 2022 Annals of hepato-biliary-pancreatic surgery Vol.26 No.3
Backgrounds/Aims: Biliary colic is a common cause of emergency department (ED) visits; however, the natural history of the disease and thus the indications for urgent or scheduled surgery remain unclear. Limitations of previous attempts to elucidate this natural history at a population level are based on the reliance on the identification of biliary colic via administrative codes in isolation. The purpose of our study was to validate the use of International Statistical Classification of Diseases and Related Health Problems codes, 10th Revision, Canadian modification (ICD-10-CA) from ED visits in adequately differentiating patients with biliary colic from those with other biliary diagnoses such as cholecystitis or common bile duct stones. Methods: We performed a retrospective validation study using administrative data from two large academic hospitals in Toronto. We assessed all the patients presenting to the ED between January 1, 2012 and December 31, 2018, assigned ICD-10-CA codes in keeping with uncomplicated biliary colic. The codes were compared to the individually abstracted charts to assess diagnostic agreement. Results: Among the 991 patient charts abstracted, 26.5% were misclassified, corresponding to a positive predictive value of 73% (95% confidence interval 73%–74%). The most frequent reasons for inaccurate diagnoses were a lack of gallstones (49.8%) and acute cholecystitis (27.8%). Conclusions: Our findings suggest that the use of ICD-10 codes as the sole means of identifying biliary colic to the exclusion of other biliary pathologies is prone to moderate inaccuracy. Previous investigations of biliary colic utilizing administrative codes for diagnosis may therefore be prone to unforeseen bias.
Layered Division Multiplexing With Multi-Radio-Frequency Channel Technologies
Garro, Eduardo,Gimenez, Jordi Joan,Sung Ik Park,Gomez-Barquero, David [Institute of Electrical and Electronics Engineers 2016 IEEE transactions on broadcasting Vol.62 No.2
<P>The advanced television system committee (ATSC) is to release the next-generation U.S. digital terrestrial television standard, known as ATSC 3.0. Layered division multiplexing (LDM) is one of the new physical layer technologies included in the standard, which enables the efficient provision of mobile and fixed services by superposing two independent signals with different power levels. ATSC 3.0 has also adopted a novel transmission technique known as channel bonding (CB), which splits the data of a service into two sub-streams that are modulated and transmitted over two radio-frequency (RF) channels. This paper investigates the potential use cases, implementation aspects, and performance advantages, for combining LDM with CB and also with the multi-RF channel technology time frequency slicing (TFS) introduced in digital video broadcasting-terrestrial second generation (DVB-T2) (as an informative annex) and digital video broadcasting-next generation handheld (DVB-NGH) which allows distributing the data of a service across two or more RF channels by means of time slicing and frequency hopping.</P>