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홍종철,이형신<SUP>1<.SUP>,김성원<SUP>2<.SUP>,이강대<SUP>2<.SUP>,Jong-Chul Hong,Hyoung-Shin Lee,M.D.<SUP>1<.SUP>,Sung- Won Kim,M.D.<SUP>2<.SUP> and Kang-Dae Lee,M.D.<SUP>2<.SUP> 대한갑상선-내분비외과학회 2011 The Koreran journal of Endocrine Surgery Vol.11 No.3
Purpose: Vocal symptoms have been reported after thyroidectomy and even in the absence of injury to the recurrent laryngeal nerve or the external branch of the superior laryngeal nerve. The aim of this prospective study was to evaluate the subjective and objective voice changes in patients without laryngeal nerve injury after thyroidectomy. Methods: The subjects had undergone total thyroidectomy for differentiated thyroid carcinoma from November 2007 to December 2008. Twenty-eight subjects (males: 8, females: 20) were selected for this study. Voice analysis was prospectively evaluated in the subjects at the time of preoperation and postoperation (10.8 months for the males and 11.7 months for the females). A subjective analysis was done using the visual analogue scale (VAS, 0: no symptom, 10: severe symptoms) and objective analyses were determined by several parameters such as the fundamental frequency (Fo), jitter, shimmer and the noise to harmonic ratio (NHR) using the multi-dimensional voice program. Maximum phonation time (MPT)was performed as an aerodynamic test. Results: 3 patients (37.5%) among the males and 14 patients (70%) among the females had subjective postoperative voice change. The VAS showed a significant difference for the females (0 to 1.25±0.97, P<0.001), whereas no changes were shown for the males (0 to 0.88±1.25, P>0.05). The vocal parameters (Fo, jitter, shimmer, NHR) and MPT showed no significant changes for both the males and females (P>0.05). Conclusion: Subjective voice changes may occur after thyroidectomy without laryngeal nerve injury. Surgeons should take possible voice changes into consideration when informing patients before thyroidectomy. (Korean J Endocrine Surg 2011;11:175-178)
홍종철,박헌수,이준형<SUP>1<,SUP>,Jong-Chul Hong,M,D,Heon-Soo Park,M,D,and Joon- Hyung Lee,M,D,<SUP>1<,SUP> 대한갑상선-내분비외과학회 2011 The Koreran journal of Endocrine Surgery Vol.11 No.4
Purpose: The aim of this study was to evaluate the safety and volume reduction of ultrasonography-guided radiofrequency ablation (RFA) for benign thyroid nodules. Methods: Twelve benign thyroid nodules in 11 euthyroid patients underwent RFA between January 2010 and December 2010. RFA was carried out using an internally cooled electrode under local anesthesia. Thyroid nodule volume was evaluated before RFA and during follow-up. Results: The mean initial volume was 8.9 ml (0.4∼33.0 ml). After RFA, the mean volume was decreased to 3.6 ml (0.1∼17.0 ml) with statiscal significance (P=0.003). The mean volume reduction rate was 64.6% (25.5∼95.4%). Most patients complained of pain during or after RFA, but the pain was relieved with oral analgesics. There was vocal cord palsy in one patient, who recovered one month after RFA. Conclusion: Ultrasonography-guided RFA is a safe modality effective at reducing volume of benign thyroid nodules. (Korean J Endocrine Surg 2011;11:252-255)
후두미세수술 전후의 성대 용종 및 결절 환자의 음성분석
홍종철,이강대,김우성,장애란,김경아,권순복,Hong, Jong-Chul,Lee, Kang-Dae,Kim, Woo-Sung,Jang, Ae-Lan,Kim, Kyung-A,Kwon, Soon-Bok 대한후두음성언어의학회 2009 대한후두음성언어의학회지 Vol.20 No.1
Background and Objectives : Vocal polyps and nodules are representative chronic benign laryngeal disease. Treatment options for vocal polyp and nodule in general include voice therapy or laryngeal microsurgery. The purpose of this study was to analyze voice results before and after laryngeal microsurgery. Materials and Method: Vocal polyp and vocal nodule patients were treated by laryngeal microsurgery from March 2004 to December 2006 at Kosin University Hospital. All were women. Voice analysis studies were done before and after laryngeal microsurgery. Five measurements were performed: MPT, Fo, jitter, shimmer and NHR. Results: There was significant improvement in the vocal polyp patients regarding MPT, jitter, shimmer and NHR. Also there was significant improvement in the vocal nodule patients regarding MPT, jitter and shimmer. Conclusion: MPT, jitter, shimmer and NHR will be effective acoustic parameters in documenting the quantitative changes in the vocal polyp patients. MPT, jitter and shimmer will be effective acoustic parameters in documenting the quantitative changes in the vocal nodule patients before and after laryngeal microsurgery.
현대건축에서의 생태학적 디자인의 원리와 의미에 관한 연구
홍종철(Hong Jong-Chul),심우갑(Shim Woo-Gab) 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
This study is to correct the misused meaning of 'Environment-friendly' and 'Ecological'. To establish clear notion of ecological design, it is to be proposed five principle of ecological design by conceptualization of organism. By result of design principle analysis. first, whole unity means that integrate relation with surrounding through organism structure of analogy and inserted architecture. second, circulation of material and energy has economical meaning through circulation of nature element. third, Variety of organic composition regards architecture as organism and it means that adapt in various form in surrounding environment. forth, evolution and growth mean that correspond variable in environment through natural growth concept. fifth, reciprocity by context could mean interchange system that is physical and visible in surrounding environment through conservation of past topography and active introduction of nature. In conclusion, ecological design have access method that is atomized by each principle, and have various meaning by application to contemporary architecture.
경구강 CO<SUB>2</SUB> 레이저로 절제한 비기능성 설갑상선 1예
박헌수,홍종철,Heon Soo Park,M.D.,Ph.D. and Jong Chul Hong,M.D.,Ph.D. 대한갑상선-내분비외과학회 2012 The Koreran journal of Endocrine Surgery Vol.12 No.1
Lingual thyroid, characterized by presence of thyroid tissue at the base of the tongue in the region between the circumvallate papillae and the epiglottis, is the most common location for ectopic thyroid tissue. Excision of the lingual thyroid is rarely necessary. When a lingual thyroid becomes symptomatic, removal is advocated. Minimally invasive surgical techniques have been proposed for more than two decades. The use of CO<SUB>2</SUB> laser for removal of lingual thyroid offers advantages over traditional open approaches. We experienced a case of non-functioning lingual thyroid which caused dysphagia in the patient. We successfully excised it with CO<SUB>2</SUB> laser via transoral approach without any complications. (Ko</SUB>rean J Endocrine Surg 2012;12:28-30)
이차성 부갑상선 기능항진증과 연관되어 발생한 상완골의 갈색종 1예
서지원,고태경,홍종철,박헌수,Ji Won Seo,Tae Kyung Koh,Jong Chul Hong,Heon Soo Park 대한갑상선-내분비외과학회 2013 The Koreran journal of Endocrine Surgery Vol.13 No.2
Brown tumor is a bone disease that arises in the setting of increased osteoclastic activity and fibroblastic proliferation in the involved bone. It is well recognized as serious complication of hyperparathyroidism. Brown tumor is uncommon, and brown tumor with secondary hyperparathyroidism resulting from chronic renal failure has rarely been reported. We recently experienced a case of a 28-year-old Korean woman with chronic renal failure caused by chronic glomerulonephritis, on hemodialysis for nine years. She has been hospitalized with left shoulder pain for two years. Image studies showed multiple cystic masses, and both suspicious marked thinning and partial destruction of the cortex on the head of the left humerus. Histopathologic analysis of the mass lesion showed a fibrotic capsule, hemosiderin pigmentation, and giant cell, all characteristic of brown tumor. A subtotal parathyroidectomy was done without surgery of the bony lesion (brown tumor), with successful results. We report this case with a brief review of the literature.
조규상,박헌수,홍종철,Kyu Sang Cho,Heon Soo Park,Jong Chul Hong 대한갑상선-내분비외과학회 2014 The Koreran journal of Endocrine Surgery Vol.14 No.4
Ultrasound guided fine needle aspiration (FNA) of thyroid nodules is a very common procedure. Its diagnostic adequacy rate is approximately 70%. The adequacy rate for core needle biopsy (CNB) is approximately 80%, so that it was significantly higher than that of FNA. CNB is clinically useful in selected patients when a prior FNA reading is nondiagnostic. Complications from FNA and CNB are rare. We report on two cases of a hematoma of the neck caused by thyroid CNB with a review of literature.
이형신(Hyoung Shin Lee),홍종철(Jong Chul Hong),유태현(Tai Hyun Yu),이환호(Hwan Ho Lee) 대한두경부종양학회 2006 대한두경부 종양학회지 Vol.22 No.2
Schwannomas are benign tumors arising from the nerve sheaths of peripheral, autonomic and cranial nerves. Between 25% and 45% of all schwannomas occur in the head and neck region but only 4% involve the nasal cavity and paranasal sinus. Moreover, schwannoma of the pterygopalatine fossa is extremely rare. We present a case of schwannoma of the pterygopalatine fossa in a 43-year-old woman. The patient was surgically managed with endoscopic transnasal approach combined with transantral approach. After 16 months, the patient shows no evidence of recurrence.