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Clinical and Radiological Characteristics of Angiomatous Meningiomas
( Juyoung Hwang ),( Doo-sik Kong ),( Ho Jun Seol ),( Do-hyun Nam ),( Jung-il Lee ),( Jung Won Choi ) 대한뇌종양학회·대한신경종양학회·대한소아뇌종양학회 2016 Brain Tumor Research and Treatment Vol.4 No.2
Background Angiomatous meningioma is a rare histological subtype of meningioma. Therefore, this specific medical condition is rarely reviewed in the literature. In the present work, we report the clinical and radiological features with postoperative outcomes of angiomatous meningioma. Methods This retrospective study included the patients who were pathologically diagnosed with angiomatous meningioma after surgical resection between February 2010 and September 2015 in our institute. We analyzed the clinical data, radiological manifestation, treatment and prognosis of all patients. Results The 15 patients (5 males and 10 females) were diagnosed with angiomatous meningioma during the study period. The median age of patients at the time of surgery was 63 years (range: 40 to 80 years). According to Simpson classification, 7, 5, and 3 patients achieved Simpson grade I, II, and IV resection, respectively. In the follow-up period, recurrence was noted in one patient. Ten out of the 15 patients showed homogeneous enhancement. Two patients demonstrated cystic changes. There was no occurrence of calcification or hemorrhage in our patients. Characteristically, 14 out of 15 patients showed signal voids of vessels. Significant peritumoral edema was observed in the majority of tumors (67%). Conclusion Angiomatous meningiomas are rare benign meningioma. Brain images of angiomatous meningioma usually demonstrate signal void signs and peritumoral edema. In the present study, angiomatous meningiomas showed good prognosis after surgical resection.
( Juyoung Hwang ),( Ho Jun Seol ),( Do-hyun Nam ),( Jung-il Lee ),( Min Ho Lee ),( Doo-sik Kong ) 대한뇌종양학회·대한신경종양학회·대한소아뇌종양학회 2016 Brain Tumor Research and Treatment Vol.4 No.2
Background Non-functioning pituitary adenomas (NFPA) invading into the cavernous sinus are surgically challenging. To decrease recurrence rate, surgeon makes a strong endeavor to resect tumor gross totally. However, gross total resection (GTR) is difficult to achieve with cavernous sinus invasion. Recently, a new classification system for cavernous invasion of pituitary adenomas was suggested. The aim of this study is to validate this new classification system and to identify limitations and consid-erations in designing treatment strategies for patients with NFPA involving the cavernous sinus. Methods Between January 2000 and January 2012, 275 patients who underwent operation for NFPA were enrolled in the study. Median age was 50 years (15-79 years). There were 145 males and 130 females. The median follow-up duration was 4 years (range 1-12.5 years). Results Related to extent of tumor removal, GTR was obtained in 184 patients (66.9%), near total resection (NTR) was obtained in 45 patients (16.3%), and sub-total resection (STR) was obtained in 46 patients (16.7%) of a total 275 patients. There were statistically significant differences between the extent of resection and the new Knosp classification (p<0.001). In the high-grade group of the new Knosp classification, there was no difference in recurrence between patients who underwent GTR or NTR only and those who underwent STR with adjuvant radiation therapy (p=0.515). Conclusion In case of high risk of surgical complications, STR with adjuvant radiation therapy can be considered as an alternative strategy for safe treatment of cavernous-invading adenomas.
Juyoung Hwang,Kyung-Il Jo,Je Young Yeon,Seung-Chyul Hong,Jong-Soo Kim 대한뇌혈관외과학회 2016 Journal of Cerebrovascular and Endovascular Neuros Vol.18 No.2
We present two patients with a dural arteriovenous fistula (dAVF) of the ophthalmic sheath who developed progressive exophthalmos, conjunctival chemosis, and visual loss. These symptoms mimic those of cavernous sinus dAVFs. Dural AVFs of the ophthalmic sheath are extremely rare and their clinical management is controversial. We successfully treated these two patients by transvenous coil embolization. Transvenous embolization appears to be a safe and effective method to treat dAVFs of the ophthalmic sheath.
18세기 후반 프랑스에서의 픽처레스크 정원미학의 확산과 특성
황주영(HWANG Juyoung) 프랑스문화예술학회 2021 프랑스문화예술연구 Vol.77 No.-
본 연구는 18세기 계몽주의 시대 프랑스에서의 픽처레스크 정원미학 이론의 전개 양상을 추적하고, 이를 당시 실제로 조성된 정원과 비교하여 그 관계를 조망함을 목표로 한다. 영국 풍경화식 정원의 주요 미학원리인 픽처레스크는 계몽주의 철학자들을 통해 프랑스에 소개되었고, 루소의 『신 엘로이즈』에 등장하는 낭만적인 정원 묘사는 보다 자연스러운 정원에 대한 취향을 확산시켰다. 1770년대에 들어 픽처레스크 정원의 주요 논고들이 프랑스에서 연이어 출간되었고, 이를 바탕으로 하는 픽처레스크 혹은 영국-중국식 정원도 조성되기 시작한다. 본 연구는 영국과 구분되는 프랑스의 픽처레스크 논의와 정원의 사례를 조망하며, 에르므농빌과 데제르 드 레, 몽소를 대표적 사례로 제시한다. 이 정원들은 순수한 자연과 조화를 이룬 삶의 이상으로 제시되었고, 전 세계를 모아 놓은 환상의 세계, 귀족들의 여흥을 위한 배경 등으로 활용되었다.
응급환자의 골든타임 내 구급차 도착률 향상을 위한 구급차 배치 및 재배치 최적화 사례 연구
황주영(Juyoung Hwang),김나영(Nayoung Kim),한진일(Jinil Han) 한국경영과학회 2020 經營 科學 Vol.37 No.3
Emergency medical systems are an essential part of the modern healthcare system, and systematic decision-making is essential to respond quickly to emergency medical services. This paper discusses the issue of deploying and relocating ambulances at a strategic and tactical level to improve the arrival rate of ambulances within golden time after an emergency. To this end, we propose integer programming formulations that determine the relocation of existing ambulances and the deployment of new ambulances simultaneously to minimize ambulance travel distance. Our case study is conducted on real-world instances from three regions of Gyeongsangnam-do, Korea. The results of the case study show that the solutions obtained from our models can reduce the distance traveled by ambulances, and therefore can be used effectively to develop plans for the deployment and relocation of ambulances in practice.