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Endovascular Management of Hepatic Artery Pseudoaneurysms: A Case Series
Pui Lam Cheung,Yat Sing Lee,Chong Boon Tan,Hin Yue Lau,Chi Wai Siu,Chik Xing Chan,Wai Tat Chan,Cheuk Him Ho 대한혈관외과학회 2023 Vascular Specialist International Vol.39 No.1
Although rare, hepatic artery aneurysms are associated with a high morbidity and mortality, necessitating a prompt diagnosis. A significant proportion of hepatic artery aneurysms are pseudoaneurysms, and the major risk factors of which have already been identified in previous literatures. Presentation can be variable, but diagnosis almost relies entirely on computed tomography and digital subtraction angiography. The endovascular approach has progressively become the preferred option due to its better performance when compared to the traditional surgical approach. However, formulation of an endovascular treatment plan for these lesions remains difficult as multiple factors should be considered to identify the best endovascular treatment modality. Five cases of pseudoaneurysm due to recent Whipple operation, hepatobiliary infections, and underlying malignancy are presented in this article to illustrate the effectiveness and complexity of endovascular treatment in this disease entity.
( Pui-tak Lee ) 부경대학교 글로벌지역학연구소 2017 Journal of Global and Area Studies(JGA) Vol.1 No.2
The primary concern of this paper is to examine the business networks of Cantonese merchants in the period of 1850s-1910s, based on what the merchants recorded by themselves in the family correspondences and the wills (the probate jurisdiction, the Supreme Court of Hong Kong, Hong Kong Record Series 144). These materials are informative of the testators’ life stories such as origins of emigration, family details, occupation, involvement of businesses, and location of residence. From these materials emerges the networking pattern that made the Cantonese merchants successful at home and overseas. To examine the hidden aspect of cross border networks of Cantonese, this paper will focus on the following issues: How did the Cantonese successfully extend and maintain their networks of business from Guangdong to Hong Kong, South China, Southeast Asia, Australia and North America? To what extent were the family networks interwoven with the business networks and were they effective in helping production, circulation, and consumption? Above all, did the Cantonese overseas network tell us something unique about Chinese practice of capitalism?
Cognition, Metacognition, and Metacognitive Theory : A Critical Analysis
Pui-wan Cheng 대한사고개발학회 1999 The International Journal of Creativity & Problem Vol.9 No.1
This paper offers a critical analysis of the validity and utility of metacognition as an independent construct for psychological studies. To examine the construct validity of metacognition, the relationship between cognition and metacognition is first analyzed and the conceptual issues involved in the study of metacognition are then examined. To demonstrate the construct utility of metacognition, theoretical perspectives from different areas of psychological studies with a metacognitive focus are presented. It is concluded that metacognition, with its emphasis on the superordinate role of awareness and control in directing cognitive activities and its linkage to motivational correlates, is a valid and useful concept that generates important insights into the conditions and mechanisms of human performance.
A Lethal Sequelae of Spinal Infection Complicating Surgery and Radiotherapy for Head and Neck Cancer
Jason Pui Yin Cheung,Kin Cheung Mak,Helen Hoi Lun Tsang,Keith Dip-Kei Luk 대한척추외과학회 2015 Asian Spine Journal Vol.9 No.4
Patients who have undergone neck dissection and radiotherapy are at risk of cervical spine infections. Furthermore, previous radiotherapy and cervical spine infections can lead to fistula formation to the subarachnoid space and intracranial infection. This report discusses the serious consequences of a missed cervical spine infection including cerebrospinal fluid fistula formation and persistent central nervous system infection, and serves as a reminder to clinicians of the possible association between cervical spine infections and prior head and neck surgery and radiotherapy. In all such cases, the posterior pharyngeal wall should be inspected during followup. Despite the appearance of an intracranial infection, the cervical spine should be investigated, especially if the response to appropriate antibiotics is suboptimal.
Jason Pui Yin Cheung,Prudence Wing Hang Cheung,Chee Kidd Chiu,Chris Yin Wei Chan,Mun Keong Kwan 대한척추외과학회 2019 Asian Spine Journal Vol.13 No.1
Study Design: Surgeon survey. Purpose: To study the various surgical practices of different surgeons in the Asia–Pacific region. Overview of Literature: Given the diversity among Asia–Pacific surgeons, there is no clear consensus on the preferred management strategies for cervical myelopathy. In particular, the role of prophylactic decompression for silent cervical spinal stenosis is under constant debate and should be addressed. Methods: Surgeons from the Asia–Pacific Spine Society participated in an online questionnaire comprising 50 questions. Data on clinical diagnosis, investigations and outcome measures, approach to asymptomatic and silent cervical spinal stenosis, guidelines for surgical approach, and postoperative immobilization were recorded. All parameters were analyzed by the Mantel–Haenszel test. Results: A total of 79 surgeons from 16 countries participated. Most surgeons used gait disturbance (60.5%) and dyskinetic hand movement (46.1%) for diagnosis. Up to 5.2% of surgeons would operate on asymptomatic spinal stenosis, and 18.2% would operate on silent spinal stenosis. Among those who would not operate, most (57.1%) advised patients on avoidance behavior and up to 9.5% prescribed neck collars. For ossification of the posterior longitudinal ligament (OPLL), anterior removal was most commonly performed for one-level disease (p <0.001), whereas laminoplasty was most commonly performed for two- to four-level disease (p =0.036). More surgeons considered laminectomy and fusion for multilevel OPLL. Most surgeons generally preferred to use a rigid neck collar for 6 weeks postoperatively (p <0.001). Conclusions: The pooled recommendations include prophylactic or early decompression surgery for patients with silent cervical spinal stenosis, particularly OPLL. Anterior decompression is primarily suggested for one- or two-level disease, whereas laminoplasty is preferred for multilevel disease.