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장효범,오해진,황청수,이민형 대한이비인후과학회 2023 대한이비인후과학회지 두경부외과학 Vol.66 No.6
Primitive myxoid mesenchymal tumor of infancy (PMMTI) is a rare malignant tumor that oc-curs in the soft tissue in early childhood. This malignant tumor can occur in various parts ofthe body, such as the trunk, extremity, and head & neck area, and is characterized by aggres-sive local infiltration. There is no standardized treatment so far because this tumor is very rareworldwide. Still now, the principle of treatment so far is complete surgical resection. We per-formed a surgical treatment for a 3-year-old PMMTI patient who visited the hospital with anincidentally discovered mass in the posterior neck. If surgical treatment is selected as thetreatment for PMMTI, it is thought that resection with sufficient margins during surgery willhelp reduce recurrence. In addition, since local recurrence is frequent and the average recur-rence-free duration is short, careful short-term follow-up is necessary.
내시경적 경접형동 접근법 후 발생하는 비부비동 합병증: 단일기관 연구
장효범,이재민,박다희,노환중,이치형,성순기,조규섭,문수진 대한이비인후과학회 부산,울산,경남 지부회 2022 임상이비인후과 Vol.33 No.4
Background and Objectives: The endoscopic transsphenoidal approach (TSA) is the standardized surgical approach to sella lesions providing a wider field and resulting in fewer neurosurgical complications. However, sinonasal complications are relatively less studied. This study aims to analyze sinonasal morbidities after endoscopic TSA performed by a single center. Materials and Methods: Among 154 patients who underwent endoscopic TSA from 2015 to 2022, 107 patients who were followed up for more than 3 months were included and retrospectively reviewed. Sinonasal complications including crust, discharge, septal perforation, synechia and polypoid sphenoid mucosa at postoperative 3 month were evaluated with olfactory function. The patients were subdivided into nasoseptal flap (NSF), non-NSF, 1st phase (initial 3 years, n=53) and 2nd phase (later 4 years, n=54) groups for further analysis. Results: There were 47 male (43.9%) with a mean age of 51.6 (range 15–83). The mean follow-up duration was 10.9 (range 3–46) months. Crust (28, 26.2%) was the most frequent morbidity followed by synechia (18, 16.8%), hyposmia (17, 15.9%), discharge (14, 13.1%), polypoid sphenoid mucosa and septal perforation (8, 7.5%). NSF was associated with crust formation and septal perforation (p<0.001). Olfactory function was relatively preserved at 3 month (p=0.065). Post- operative cerebrospinal fluid (CSF) leak decreased in the 2nd phase (4/54, 7.4%) compared to the 1st phase (12/53, 22.6%) (p<0.05). Conclusion: Crust was the most frequent sinonasal morbidity after endoscopic TSA followed by synechia. NSF was associated with crust and septal perforation. Post-op CSF leaks could be reduced after overcoming the learning curve of endoscopic TSA.
UHPFRCC 기둥 부재의 일축 압축 거동에 관한 실험적 연구
민경환,장효범,정준영,최홍식 한국복합신소재구조학회 2016 복합신소재구조학회 학술발표회 Vol.2016 No.04
The experimental study aims to investigate uniaxial behavior of ultra-high-performance fiber-reinforced composite (UHPFRCC) columns with compressive strengths of 180, 150, and 120 MPa. Eleven square columns and six circular columns will be constructed and tested with uniaxial load. Main variables were the amount and spacing of transverse reinforcement, and concrete compressive strength. The amount and spacing of transverse reinforcement were chosen based on the seismic design provisions of ACI Code (ACI 318-14) and CSA Standard (CSA 2014).
편측 갑상선 절제술시 배액관 유무에 따른 유용성 비교 연구
박다희,장효범,이재민,이민형,이진춘,성의숙 대한이비인후과학회 부산,울산,경남 지부회 2021 임상이비인후과 Vol.32 No.1
Background and Objectives: A thyroidectomy is an operation that can lead to life-threatening complications. The drainage after thyroidectomy has been suggested to prevent these complications. The aim of this study is to evaluate the feasibility and safety of hemithyroidectomy without drains. Materials and Methods: This retrospective casecontrol study included all hemithyroidectomies with central neck dissection (CND) or without CND performed at the single hospital from January 2015 to December 2017. The demographic data, operation times, hospital days, and postoperative complications were evaulated. Results: During the study period, Two hundred–twenty patients who were underwent hemithyroidectomy for benign or well differentiated carcinoma. The majority of patients were female (N=153, 69.5%). Drains were inserted postoperatively after 102 surgeries (46.4%) compared to 118 surgeries (53.6%) without drains. There were no significant difference in seroma, hematoma, infection, vocal cord palsy, hypocalcemia between drain group and without drain group(p>0.05). However, there were significant difference in operation times and hospital days between drain group and without drain group (p<0.001, p<0.001, respectively). Conclusions: The tumor size in drain group tended to be relatively large, and hospital days and operation times were significantly increased. However, there were no differences in postoperative complications between drain and without drain groups