1.Evaluation of Prognostic Factors for the Parotid Cancer Treated With Surgery and Postoperative Radiotherapy
Yong-Hyub KIM ; Woong-Ki CHUNG ; Jae-Uk JEONG ; Ick Joon CHO ; Mee Sun YOON ; Ju-Young SONG ; Taek-Keun NAM ; Sung-Ja AHN ; Dong Hoon LEE ; Tae Mi YOON ; Joon Kyoo LEE ; Sang Chul LIM
Clinical and Experimental Otorhinolaryngology 2020;13(1):69-76
		                        		
		                        			 Objectives:
		                        			. To investigate the prognostic factors and treatment outcomes of primary parotid carcinoma treated with surgery and postoperative radiotherapy (PORT). 
		                        		
		                        			Methods:
		                        			. We reviewed retrospectively 57 patients with primary parotid carcinoma who were treated with surgery and PORT between 2005 and 2014. Superficial parotidectomy was performed in 19 patients, total parotidectomy in 10 patients, and total parotidectomy with lymph node dissection in 28 patients PORT on the tumor bed was performed in 41 patients, while PORT on tumor bed and ipsilateral cervical lymph nodes was performed in 16 patients. 
		                        		
		                        			Results:
		                        			. With a median follow-up of 66 months, the 5-year overall survival, disease-free survival, locoregional control, and distant control rates were 77.0%, 60.2%, 77.6%, and 72.8%, respectively. The 5-year overall survival by stage was 100%, 100%, 80.0%, and 46.4% in stage I, II, III, and IV, respectively. Recurrences at primary lesions were found in seven patients, while at cervical nodes in six patients. Distant recurrences were developed in 12 patients. No patient with the low and intermediate histologic grade developed distant failure. As prognostic factors, the histologic grade for overall survival (P=0.005), pathological T-stage (P=0.009) and differentiation grade (P=0.009) for disease-free survival, pathological T-stage for locoregional control (P=0.007), and lympho-vascular invasion (P=0.023) for distant recurrence were significant on multivariate analysis. 
		                        		
		                        			Conclusion
		                        			. This study revealed that differentiation grade, histologic grade, pathological T-stage, and lympho-vascular invasion were significant independent prognostic factors on clinical outcomes. 
		                        		
		                        		
		                        		
		                        	
2.Comparison of Skin Graft for the Defect of the Radial Forearm Free Flap
Joon Kyoo LEE ; Sung Ho YOON ; Tae Gu KANG ; Jae Gu KIM ; Hee Young KIM ; Hye Rin LIM ; Se Hyun JEONG ; Kyeong Suk PARK
Korean Journal of Otolaryngology - Head and Neck Surgery 2019;62(9):515-519
		                        		
		                        			
		                        			BACKGROUND AND OBJECTIVES: This study compared two types of skin graft reconstruction for the defect of the radial forearm free flap. SUBJECTS AND METHOD: Ten cases of split-thickness skin graft (STSG) harvested from the thigh were analyzed. Also, ten cases of full-thickness skin graft (FTSG) harvest from the inguinal area applied with vacuum-assisted closure (VAC) system were analyzed. RESULTS: The defect size of the radial forearm was increased more in the STSG group than in the FTSG group (p<0.05). Skin grafts were recovered completely sooner in the FTSG group than in the STSG group although it was not statistically significant (p=0.082). Five complications (pruritus, hypertrophic scar) were found in the donor site in the STSG group (p<0.05). FTSG gave better scores according to the Vancouver Scar Scale in terms of pigmentation, pliability, and height (p<0.05). CONCLUSION: FTSG harvested from the inguinal area with the application of VAC system has many advantages for the defect of the radial forearm free flap although it is usually used for smaller size defects than for STSGs.
		                        		
		                        		
		                        		
		                        			Cicatrix
		                        			;
		                        		
		                        			Forearm
		                        			;
		                        		
		                        			Free Tissue Flaps
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Methods
		                        			;
		                        		
		                        			Negative-Pressure Wound Therapy
		                        			;
		                        		
		                        			Pigmentation
		                        			;
		                        		
		                        			Pliability
		                        			;
		                        		
		                        			Reconstructive Surgical Procedures
		                        			;
		                        		
		                        			Skin Transplantation
		                        			;
		                        		
		                        			Skin
		                        			;
		                        		
		                        			Thigh
		                        			;
		                        		
		                        			Tissue Donors
		                        			;
		                        		
		                        			Transplants
		                        			
		                        		
		                        	
3.Guidelines for the Surgical Management of Oral Cancer: Korean Society of Thyroid-Head and Neck Surgery
Young hoon JOO ; Jae keun CHO ; Bon seok KOO ; Minsu KWON ; Seong keun KWON ; Soon young KWON ; Min su KIM ; Jeong kyu KIM ; Heejin KIM ; Innchul NAM ; Jong lyel ROH ; Young min PARK ; Il seok PARK ; Jung je PARK ; Sung chan SHIN ; Soon hyun AHN ; Seongjun WON ; Chang hwan RYU ; Tae mi YOON ; Giljoon LEE ; Doh young LEE ; Myung chul LEE ; Joon kyoo LEE ; Jin choon LEE ; Jae yol LIM ; Jae won CHANG ; Jeon yeob JANG ; Man ki CHUNG ; Yuh seok JUNG ; Jae gu CHO ; Yoon seok CHOI ; Jeong seok CHOI ; Guk haeng LEE ; Phil sang CHUNG
Clinical and Experimental Otorhinolaryngology 2019;12(2):107-144
		                        		
		                        			
		                        			Korean Society of Thyroid-Head and Neck Surgery appointed a Task Force to provide guidance on the implementation of a surgical treatment of oral cancer. MEDLINE databases were searched for articles on subjects related to “surgical management of oral cancer” published in English. Results were restricted to systematic reviews, randomized control trials/controlled clinical trials, and observational studies. The quality of evidence was rated with use RoBANS (Risk of Bias Assessment Tool for Nonrandomized Studies) and AMSTAR (A Measurement Tool to Assess the Methodological Quality of Systematic Reviews). Evidence-based recommendations for practice were ranked according to the American College of Physicians grading system. Additional directives are provided as expert opinions and Delphi questionnaire when insufficient evidence existed. The Committee developed 68 evidence-based recommendations in 34 categories intended to assist clinicians and patients and counselors, and health policy-makers. Proper surgical treatment selection for oral cancer, which is directed by patient- and subsite-specific factors, remains the greatest predictor of successful treatment outcomes. These guidelines are intended for use in conjunction with the individual patient's treatment goals.
		                        		
		                        		
		                        		
		                        			Advisory Committees
		                        			;
		                        		
		                        			Bias (Epidemiology)
		                        			;
		                        		
		                        			Carcinoma, Squamous Cell
		                        			;
		                        		
		                        			Counseling
		                        			;
		                        		
		                        			Expert Testimony
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Mouth Neoplasms
		                        			;
		                        		
		                        			Neck
		                        			;
		                        		
		                        			Republic of Korea
		                        			
		                        		
		                        	
4.Intensity-modulated radiotherapy for stage I glottic cancer: a short-term outcomes compared with three-dimensional conformal radiotherapy
Ick Joon CHO ; Woong Ki CHUNG ; Joon Kyoo LEE ; Min Cheol LEE ; Jayeong PAEK ; Yong Hyub KIM ; Jae Uk JEONG ; Mee Sun YOON ; Ju Young SONG ; Taek Keun NAM ; Sung Ja AHN ; Dong Hoon LEE ; Tae Mi YOON ; Sang Chul LIM
Radiation Oncology Journal 2019;37(4):271-278
		                        		
		                        			
		                        			PURPOSE: To investigate the differences in treatment outcomes between two radiation techniques, intensity-modulated radiotherapy (IMRT) and three-dimensional conformal radiotherapy (3DCRT).MATERIALS AND METHODS: We retrospectively analyzed 160 (IMRT = 23, 3DCRT = 137) patients with stage I glottic cancer treated from January 2005 through December 2016. The IMRT was performed with TomoTherapy (16 patients), volumetric-modulated arc therapy (6 patients), and step-and-shoot technique (1 patient), respectively. The 3DCRT was performed with bilateral parallel opposing fields. The median follow-up duration was 30 months (range, 31 to 42 months) in the IMRT group and 65 months (range, 20 to 143 months) in the 3DCRT group.RESULTS: The 5-year overall survival and 3-year local control rates of the 160 patients were 95.7% and 91.4%, respectively. There was no significant difference in 3-year local control rates between the IMRT and 3DCRT groups (94.4% vs. 91.0%; p = 0.587). Thirteen of 137 patients in the 3DCRT group had recurrences. In the IMRT group, one patient had a recurrence at the true vocal cord. Patients treated with IMRT had less grade 2 skin reaction than the 3DCRT group, but this had no statistical significance (4.3% vs. 21.2%; p = 0.080).CONCLUSION: IMRT had comparable outcomes with 3DCRT, and a trend of less acute skin reaction in stage I glottic cancer patients
		                        		
		                        		
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Glottis
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Laryngeal Neoplasms
		                        			;
		                        		
		                        			Radiotherapy, Conformal
		                        			;
		                        		
		                        			Radiotherapy, Intensity-Modulated
		                        			;
		                        		
		                        			Recurrence
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Skin
		                        			;
		                        		
		                        			Vocal Cords
		                        			
		                        		
		                        	
5.Comparison of Skin Graft for the Defect of the Radial Forearm Free Flap
Joon Kyoo LEE ; Sung Ho YOON ; Tae Gu KANG ; Jae Gu KIM ; Hee Young KIM ; Hye Rin LIM ; Se Hyun JEONG ; Kyeong Suk PARK
Korean Journal of Otolaryngology - Head and Neck Surgery 2019;62(9):515-519
		                        		
		                        			 BACKGROUND AND OBJECTIVES:
		                        			This study compared two types of skin graft reconstruction                for the defect of the radial forearm free flap.                SUBJECTS AND METHOD: Ten cases of split-thickness skin graft (STSG) harvested from the thigh were                analyzed. Also, ten cases of full-thickness skin graft (FTSG) harvest from the inguinal area applied                with vacuum-assisted closure (VAC) system were analyzed.            
		                        		
		                        			RESULTS:
		                        			The defect size of the radial forearm was increased more in the STSG group                than in the FTSG group (p<0.05). Skin grafts were recovered completely sooner in the FTSG group than                in the STSG group although it was not statistically significant (p=0.082). Five complications (pruritus,                hypertrophic scar) were found in the donor site in the STSG group (p<0.05). FTSG gave better scores                according to the Vancouver Scar Scale in terms of pigmentation, pliability, and height (p<0.05).            
		                        		
		                        			CONCLUSION
		                        			FTSG harvested from the inguinal area with the application of VAC system                has many advantages for the defect of the radial forearm free flap although it is usually used for                smaller size defects than for STSGs.             
		                        		
		                        		
		                        		
		                        	
6.Fractionated Stereotactic Radiosurgery for Brain Metastases Using the Novalis Tx® System
Tae Kyoo LIM ; Woo Kyung KIM ; Chan Jong YOO ; Eun Young KIM ; Myeong Jin KIM ; Gi Taek YEE
Journal of Korean Neurosurgical Society 2018;61(4):525-529
		                        		
		                        			
		                        			OBJECTIVE: To evaluate the efficacy of fractionated stereotactic radiosurgery (FSRS) performed using the Novalis Tx® system (BrainLAB AG, Feldkirchen, Germany; Varian Medical Systems, Palo Alto, CA, USA) for brain metastases.METHODS: Between March 2013 and July 2016, 23 brain metastases patients were admitted at a single institute. Twenty-nine lesions too large for single session stereotactic radiosurgery or located in the vicinity of eloquent structures were treated by FSRS. Based on the results obtained, we reviewed the efficacy and toxicity of FSRS for the treatment of brain metastases.RESULTS: The most common lesion origin was lung (55%) followed by breast (21%). Median overall survival was 10.0 months (95% confidence interval [CI], 4.9–15.0), and median progression-free survival was 10.0 months (95% CI, 2.1–13.9). Overall survival rates at 1 and 2 years were 58.6% and 36.0%, respectively. Local recurrence and neurological complications affecting morbidity each occurred in two cases.CONCLUSION: FSRS using the Novalis-Tx® system would appear to be an effective, safe noninvasive treatment modality for large and eloquently situated brain metastases. Further investigation is required on a larger number of patients.
		                        		
		                        		
		                        		
		                        			Brain Neoplasms
		                        			;
		                        		
		                        			Brain
		                        			;
		                        		
		                        			Breast
		                        			;
		                        		
		                        			Disease-Free Survival
		                        			;
		                        		
		                        			Germany
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Lung
		                        			;
		                        		
		                        			Neoplasm Metastasis
		                        			;
		                        		
		                        			Radiosurgery
		                        			;
		                        		
		                        			Recurrence
		                        			;
		                        		
		                        			Survival Rate
		                        			
		                        		
		                        	
7.Imaging Findings of Venous Malformation in Neck
Dong Hoon LEE ; Tae Mi YOON ; Joon Kyoo LEE ; Sang Chul LIM
Chonnam Medical Journal 2018;54(1):76-77
		                        		
		                        			
		                        			No abstract available.
		                        		
		                        		
		                        		
		                        			Neck
		                        			
		                        		
		                        	
8.Supraclavicular Lymph Node Excision Biopsy in Patients with Suspected Supraclavicular Lymph Node Metastasis of Lung Cancer: Experience in a Tertiary Hospital
Dong Hoon LEE ; Tae Mi YOON ; Joon Kyoo LEE ; Sang Chul LIM
Chonnam Medical Journal 2017;53(1):69-72
		                        		
		                        			
		                        			The aim of this study was to evaluate the usefulness and accuracy of supraclavicular lymph node excision biopsy in the diagnosis of suspected supraclavicular lymph node metastasis of lung cancer. A retrospective review was performed to evaluate patients with suspected supraclavicular lymph node metastasis of lung cancer who underwent supraclavicular lymph node excision biopsy from January 2011 to July 2014. Forty-six patients with suspected supraclavicular lymph node metastasis of lung cancer underwent supraclavicular lymph node excision biopsy, which diagnosed benign diseases in 6 patients and malignant diseases in 40 patients. Supraclavicular lymph node excision biopsy was usually performed on patients during their first clinical visit under local anesthesia. For diagnosing suspected lung cancer, supraclavicular lymph node excision biopsy had a diagnostic sensitivity of 100%, specificity of 97.6%, positive-predictive value of 83.3%, negative-predictive value of 100%, and accuracy of 97.8%. No major complication resulted from surgical intervention. Supraclavicular lymph node excision biopsy is a useful and accurate adjunct for the evaluation of suspected supraclavicular lymph node metastasis of lung cancer in a tertiary hospital.
		                        		
		                        		
		                        		
		                        			Anesthesia, Local
		                        			;
		                        		
		                        			Biopsy
		                        			;
		                        		
		                        			Diagnosis
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Lung Neoplasms
		                        			;
		                        		
		                        			Lung
		                        			;
		                        		
		                        			Lymph Node Excision
		                        			;
		                        		
		                        			Lymph Nodes
		                        			;
		                        		
		                        			Lymphatic Metastasis
		                        			;
		                        		
		                        			Neck
		                        			;
		                        		
		                        			Neoplasm Metastasis
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Sensitivity and Specificity
		                        			;
		                        		
		                        			Tertiary Care Centers
		                        			
		                        		
		                        	
9.Invasive Fungal Sinusitis of the Sphenoid Sinus.
Dong Hoon LEE ; Tae Mi YOON ; Joon Kyoo LEE ; Young Eun JOO ; Kyung Hwa PARK ; Sang Chul LIM
Clinical and Experimental Otorhinolaryngology 2014;7(3):181-187
		                        		
		                        			
		                        			OBJECTIVE: This study was conducted to present the clinical outcome of invasive fungal sinusitis of the sphenoid sinus and to analyze clinical factors influencing patient survival. METHODS: A retrospective review of 12 cases of invasive fungal sphenoiditis was conducted. RESULTS: Cases were divided into acute fulminant invasive fungal spheonoidits (n=4) and chronic invasive fungal sphenoiditis (n=8). The most common underlying disease was diabetes mellitus (n=9). The most common presenting symptoms and signs included visual disturbance (100%). Intracranial extension was observed in 8 patients. Endoscopic debridement and intravenous antifungals were given to all patients. Fatal aneurysmal rupture of the internal carotid artery occurred suddenly in two patients. The mortality rate was 100% for patients with acute fulminant invasive fungal sphenoiditis and 25% for patients with chronic invasive fungal sphenoiditis. In survival analysis, intracranial extension was evaluated as a statistically significant factor (P=0.027). CONCLUSION: The survival rate of chronic invasive fungal sphenoiditis was 75%. However, the prognosis of acute fulminant invasive fungal sphenoiditis was extremely poor despite the application of aggressive treatment, thus, a high index of suspicion should be required and new diagnostic markers need to be developed for early diagnosis of invasive fungal sinusitis of the sphenoid sinus.
		                        		
		                        		
		                        		
		                        			Aneurysm
		                        			;
		                        		
		                        			Carotid Artery, Internal
		                        			;
		                        		
		                        			Debridement
		                        			;
		                        		
		                        			Diabetes Mellitus
		                        			;
		                        		
		                        			Early Diagnosis
		                        			;
		                        		
		                        			Fungi
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Mortality
		                        			;
		                        		
		                        			Prognosis
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Rupture
		                        			;
		                        		
		                        			Sinusitis*
		                        			;
		                        		
		                        			Sphenoid Sinus*
		                        			;
		                        		
		                        			Survival Rate
		                        			
		                        		
		                        	
10.Vascular Leiomyoma in the Head and Neck Region: 11 Years Experience in One Institution.
Tae Mi YOON ; Hyung Chae YANG ; Yoo Duk CHOI ; Dong Hoon LEE ; Joon Kyoo LEE ; Sang Chul LIM
Clinical and Experimental Otorhinolaryngology 2013;6(3):171-175
		                        		
		                        			
		                        			OBJECTIVES: Vascular leiomyoma is an uncommon benign tumor of smooth muscle origin that arises from the muscularis layer of blood vessel walls. We report our experiences with the clinical manifestations, pathologic characteristics, and management of vascular leiomyoma in the head and neck. METHODS: The clinical records of 12 patients with vascular leiomyoma of the head and neck in the 11-year period were reviewed retrospectively. RESULTS: The 12 patients included nine men and three women. The locations of the tumors were variable, including nasal cavity, auricle, hard palate, upper lip, upper eyelid, and supraclavicular space. All but three patients reported an asymptomatic spherical mass; the other three patients complained of intermittent epistaxis or unilateral nasal obstruction resulting from the tumor originating in the nasal cavity. All tumors were painless. Computed tomography consistently revealed a well-defined, intensely enhanced small mass on the mucosa. No case was dignosed corretly as vascular leiomyoma before surgical excision. All patients underwent localized surgical excision of the tumor without recurrence. Five of 12 tumors (42%) were of solid type, four (33%) were of venous type, and three (25%) were of cavernous in histological classification. The histologic type was not related to gender, site of occurrence, and presence of pain. CONCLUSION: Vascular leiomyoma presents as a small, painless mass in various locations of the head and neck region. Localized surgical excision is the only way to make the diagnosis and yields excellent results.
		                        		
		                        		
		                        		
		                        			Angiomyoma
		                        			;
		                        		
		                        			Blood Vessels
		                        			;
		                        		
		                        			Caves
		                        			;
		                        		
		                        			Epistaxis
		                        			;
		                        		
		                        			Eyelids
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Glycosaminoglycans
		                        			;
		                        		
		                        			Head
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Lip
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Mucous Membrane
		                        			;
		                        		
		                        			Muscle, Smooth
		                        			;
		                        		
		                        			Nasal Cavity
		                        			;
		                        		
		                        			Nasal Obstruction
		                        			;
		                        		
		                        			Neck
		                        			;
		                        		
		                        			Palate, Hard
		                        			;
		                        		
		                        			Recurrence
		                        			
		                        		
		                        	
            
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