1.Surgical Resection of Metastatic Choroidal Melanoma in the Rib and Bronchus: A case report.
Byungjoon PARK ; Yong Soo CHOI
The Korean Journal of Thoracic and Cardiovascular Surgery 2010;43(1):117-119
Choroidal melanoma is the most common primary intraocular cancer in adults. The predominant sites of metastasis that are associated with a poor prognosis are liver, lung and bone. The authors report here on a case of metastatic choroidal melanoma in the rib and bronchus, and this was all treated by surgical resection.
Adult
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Bronchi
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Choroid
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Humans
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Liver
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Lung
;
Lung Neoplasms
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Melanoma
;
Neoplasm Metastasis
;
Prognosis
;
Ribs
2.Geographic information system analysis on the distribution of patients visiting the periodontology department at a dental college hospital.
Byungjoon JEONG ; Hyun Tae JOO ; Hyun Seung SHIN ; Mi Hwa LIM ; Jung Chul PARK
Journal of Periodontal & Implant Science 2016;46(3):207-217
PURPOSE: The aim of this study is to analyze and visualize the distribution of patients visiting the periodontology department at a dental college hospital, using a geographic information system (GIS) to utilize these data in patient care and treatment planning, which may help to assess the risk and prevent periodontal diseases. METHODS: Basic patient information data were obtained from Dankook University Dental Hospital, including the unit number, gender, date of birth, and address, down to the dong (neighborhood) administrative district unit, of 306,656 patients who visited the hospital between 2007 and 2014. The data of only 26,457 patients who visited the periodontology department were included in this analysis. The patient distribution was visualized using GIS. Statistical analyses including multiple regression, logistic regression, and geographically weighted regression were performed using SAS 9.3 and ArcGIS 10.1. Five factors, namely proximity, accessibility, age, gender, and socioeconomic status, were investigated as the explanatory variables of the patient distribution. RESULTS: The visualized patient data showed a nationwide scale of the patient distribution. The mean distance from each patient's regional center to the hospital was 30.94±29.62 km and was inversely proportional to the number of patients from the respective regions. The distance from a regional center to the adjacent toll gate had various effects depending on the local distance from the hospital. The average age of the patients was 52.41±12.97 years. Further, a majority of regions showed a male dominance. Personal income had inconsistent results between analyses. CONCLUSIONS: The distribution of patients is significantly affected by the proximity, accessibility, age, gender and socioeconomic status of patients, and the patients visiting the periodontology department travelled farther distances than those visiting the other departments. The underlying reason for this needs to be analyzed further.
Epidemiology
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Geographic Information Systems*
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Humans
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Logistic Models
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Male
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Parturition
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Patient Care
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Periodontal Diseases
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Social Class
;
Spatial Regression
3.Pulmonary Embolectomy for Treatment of Pulmonary Embolism.
Byungjoon PARK ; Pyo Won PARK ; Young Mog SHIM ; Young Tak LEE ; Kay Hyun PARK ; Jhin Gook KIM ; Wook Sung KIM ; Ki Ick SUNG
The Korean Journal of Thoracic and Cardiovascular Surgery 2009;42(4):492-496
BACKGROUND: The treatment of acute pulmonary embolism is difficult, and it can be lethal when cardiogenic shock is involved with major pulmonary embolism. In the past, pulmonary embolectomy was considered as the last choice for patients with pulmonary embolism. Accordingly, we analyzed our experience with seven cases of pulmonary embolectomy as an alternative option for the early treatment of pulmonary embolism. MATERIAL AND METHOD: A retrospective analysis of medical charts of all patients who underwent pulmonary embolectomy at our hospital over the past eight years was performed. The patients were observed during their hospital stay and followed until their last visit to the outpatient department. RESULT: Among 7 patients (4 men and 3 women), 4 had massive pulmonary embolism, and 3 had submassive pulmonary embolism. An extracorporeal membrane oxygenator was inserted in 3 patients before surgery. There was no mortality, and postoperative echocardiography showed no pulmonary hypertension in 6 patients. CONCLUSION: Pulmonary embolectomy can be performed with minimal mortality. We think that the use of an extracorporeal membrane oxygenator in patients with cardiogenic shock before surgery improves survival.
Echocardiography
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Embolectomy
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Extracorporeal Membrane Oxygenation
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Humans
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Hypertension, Pulmonary
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Length of Stay
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Male
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Outpatients
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Oxygenators, Membrane
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Pulmonary Embolism
;
Retrospective Studies
;
Shock, Cardiogenic
4.Prediction of Pathologic Grade and Prognosis in Mucoepidermoid Carcinoma of the Lung Using 18F-FDG PET/CT.
Byungjoon PARK ; Hong Kwan KIM ; Yong Soo CHOI ; Jhingook KIM ; Jae Il ZO ; Joon Young CHOI ; Young Mog SHIM
Korean Journal of Radiology 2015;16(4):929-935
OBJECTIVE: The maximum standardized uptake value (SUVmax) of pulmonary mucoepidermoid carcinoma (PMEC) in fluorine-18fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) was evaluated as a preoperative predictor of pathologic grade and survival rate. MATERIALS AND METHODS: Twenty-three patients who underwent preoperative PET/CT and complete resection for PMEC were enrolled. The optimal cut-off SUVmax for tumor grade was calculated as 6.5 by receiver operating characteristic curve. The patients were divided into a high SUV group (n = 7) and a low SUV group (n = 16). Clinicopathologic features were compared between the groups by chi2 test and overall survival was determined by Kaplan-Meier analysis. RESULTS: The mean SUVmax was 15.4 +/- 11.5 in the high SUV group and 3.9 +/- 1.3 in the low SUV group. All patients except one from the low SUV group had low grade tumors and all had no nodal metastasis. The sensitivity and specificity of SUVmax from PET/CT for predicting tumor grade was 85.7% and 93.8%, respectively. During the follow-up period (mean, 48.6 +/- 38.7 months), four patients from the high SUV group experienced cancer recurrence, and one died of cancer. In contrast, none of the low SUV group had recurrence or mortality. Five-year overall survival rate was significantly higher in the low SUV group (100% vs. 71.4%, p = 0.031). CONCLUSION: Pulmonary mucoepidermoid carcinoma patients with high SUVmax in PET/CT had higher tumor grade, more frequent lymph node metastasis and worse long-term outcome. Therefore, PMEC patients with high uptake on PET/CT imaging might require aggressive mediastinal lymph node dissection and adjuvant therapies.
Adolescent
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Adult
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Aged
;
Aged, 80 and over
;
Carcinoma, Mucoepidermoid/*pathology/radiography
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Female
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Fluorodeoxyglucose F18/metabolism
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Humans
;
Kaplan-Meier Estimate
;
Lung Neoplasms/*pathology/radiography
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Lymph Nodes/pathology/radiography
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Lymphatic Metastasis
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Male
;
Mediastinum/radiography
;
Middle Aged
;
Neoplasm Grading
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Neoplasm Recurrence, Local/pathology/radiography
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Positron-Emission Tomography/*methods
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Prognosis
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ROC Curve
;
Retrospective Studies
;
Sensitivity and Specificity
;
Survival Rate
;
Tomography, X-Ray Computed/*methods
;
Young Adult
5.Pneumonectomy for Clinical Stage I Non-Small Cell Lung Cancer in Elderly Patients over 70 Years of Age.
Tae Ho KIM ; Byungjoon PARK ; Jong Ho CHO ; Hong Kwan KIM ; Yong Soo CHOI ; Kwhan Mien KIM ; Young Mog SHIM ; Jaeil ZO ; Jhingook KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 2015;48(4):252-257
BACKGROUND: Lobectomy is the generally accepted standard treatment for early-stage non-small cell lung cancer (NSCLC). However, especially in elderly patients, it is often necessary to perform pneumonectomy in order to maximize the likelihood of curative treatment, although pneumonectomy is a challenging procedure. METHODS: We analysed patients who were clinically diagnosed with stage I NSCLC and underwent pneumonectomy with curative intent from 2004 to 2011. The patients were divided into an elderly group (> or =70 years) and a younger group (<70 years). We retrospectively analysed the outcomes of these groups of patients in order to characterize the role of pneumonectomy as a treatment for elderly patients with clinical stage I NSCLC. RESULTS: Thirty patients younger than 70 years of age (younger group) and fourteen patients 70 years of age or older (elderly group) who underwent pneumonectomy were enrolled in the present study. The median follow-up period was 35 months (range, 0 to 125 months). The perioperative mortality rate (within 90 days after the operation) was 7.1% in the elderly group and 6.7% in the younger group (p=0.73). No significant differences between the two groups were observed regarding the occurrence of pneumonia, acute respiratory distress syndrome, cardiac arrhythmia, bronchopleural fistula, and vocal cord paralysis. The overall five-year survival rate was 79.4% in the younger group and 35.7% in the elderly group, which was a significant difference (p=0.018). The five-year disease-free survival rate was 66.7% in the younger group and 35.7% in the elderly group, but this difference was not statistically significant (p=0.23). CONCLUSION: Although elderly patients with early stage lung cancer showed a worse long-term survival rate after pneumonectomy than younger patients, the outcomes of elderly patients were similar to those of younger patients in terms of perioperative mortality and postoperative complications. Patients should not be denied pneumonectomy solely due to old age.
Aged*
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Arrhythmias, Cardiac
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Carcinoma, Non-Small-Cell Lung*
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Disease-Free Survival
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Fistula
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Follow-Up Studies
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Geriatrics
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Humans
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Lung Neoplasms
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Mortality
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Pneumonectomy*
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Pneumonia
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Postoperative Complications
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Respiratory Distress Syndrome, Adult
;
Retrospective Studies
;
Survival Rate
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Vocal Cord Paralysis