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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.
핀레이의 〈리틀 스파르타〉 정원에 나타난 문학과 회화의 에크프라시스
황주영(HWANG Juyoung) 현대미술학회 2020 현대미술학 논문집 Vol.24 No.1
본 연구는 정원 예술에 나타난 문학과 회화의 에크프라시스를 검토한다. 수사학에서 시작된 에크프라시스는 문학과 회화의 상호 매체성으로 확장된다. 18세기 영국의 문인들은 정원과 시, 회화가 형태는 다를지라도 ‘자매 예술(sister arts)’로서 각기 고유한 방식으로 비슷한 감상 효과를 준다고 보았다. 20세기 후반에 들어 다시 정원 예술이 부활했고, 새로운 시도가 나타난다. 이 중 이언 해밀턴 핀레이의 〈리틀 스파르타〉 정원은 문학과 미술, 정원이 통섭하며 독특한 의미를 생성하고, 다양한 해석을 이끈다. This study investigates the literary and pictorial ekpharsis in the garden art. Having been emerged from the rhetoric, the ekphrasis extended into intermediality between literature and painting. And the idea of ‘Sister Arts’-poetry, painting, and gardening- was developed by the literati of the 18th Century England. New wave of the garden art was revived in the late 20th Century, and few examples including the Little Sparta of Ian Hamilton Finlay creates original meanings and leads various interpretation.
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.