1.Clinical analysis of unstable thoracolumbar fractures and fracture-dislocation using transpedicular screws.
Won Sik CHOY ; Chang Hyun BAIK ; Sung Soo CHO ; Hyun Jong PARK ; Dong Hoo KOH
The Journal of the Korean Orthopaedic Association 1991;26(3):719-727
No abstract available.
2.Hereditary Ovarian Cancer: Report of 6 Families.
Soon Beom KANG ; Jae Hoo KWEONG ; Chang Won KOH ; Yong Sang SONG ; Hyo Pyo LEE ; Jae Gahb PARK
Korean Journal of Gynecologic Oncology and Colposcopy 1995;6(3):204-213
Hereditary ovarian cancer accounts for about 5% to 10% of the total ovarian cancer bnurden, The discase has been observed in context with three types of hereditary ovarian cancer prone syndrome : (1) site-specific ovarian cancer, (2) hereditary breast/ivarian cancer syndrome, (3) hereditary nonpolyposis colorectal cancer(Lynch syndrome II). Each of these syndmmcs is chracterized by autosomal dominant transmission of cancer, sigrdficant early age of onset, and exeess of multiple Iprimary cancers. Auuthor expxeriencecl six families with hereditaty ovarian cancer, two families with a site-spxific. ovarian cancer and four with a breast/ovarian cancer syndrome, and report these families.
Age of Onset
;
Chymopapain
;
Humans
;
Ovarian Neoplasms*
3.Hereditary Ovarian Cancer: Report of 6 Families.
Soon Beom KANG ; Jae Hoo KWEONG ; Chang Won KOH ; Yong Sang SONG ; Hyo Pyo LEE ; Jae Gahb PARK
Korean Journal of Gynecologic Oncology and Colposcopy 1995;6(3):204-213
Hereditary ovarian cancer accounts for about 5% to 10% of the total ovarian cancer bnurden, The discase has been observed in context with three types of hereditary ovarian cancer prone syndrome : (1) site-specific ovarian cancer, (2) hereditary breast/ivarian cancer syndrome, (3) hereditary nonpolyposis colorectal cancer(Lynch syndrome II). Each of these syndmmcs is chracterized by autosomal dominant transmission of cancer, sigrdficant early age of onset, and exeess of multiple Iprimary cancers. Auuthor expxeriencecl six families with hereditaty ovarian cancer, two families with a site-spxific. ovarian cancer and four with a breast/ovarian cancer syndrome, and report these families.
Age of Onset
;
Chymopapain
;
Humans
;
Ovarian Neoplasms*
4.Comparative study on the activation status of eosinophils in exerise- and allergen-induced asthma.
Young Yull KOH ; Jung Hwan CHOI ; Chan Hoo PARK ; Sun Young LEE ; Chang Keun KIM ; Jin Hwa JEONG
Korean Journal of Allergy 1997;17(3):286-298
Exercise is one of the most ubiquitous triggers of acute bouts of asthma. Late asthmatic responses(LARs) have been described following strenuous exercise, as in allergen-induced asthma. However, most studies have reported that airway responsiveness is not increased after exercise, even in subjects with LAR to exercise. This suggests that LAR after exercise may not be associated with inflammatory changes in the airways. We have frequently seen asthmatic children whose complaint is that symptoms are exacerbated at night after strenuous daytime exercise. Furthermore, airway responsiveness to allergen was reported to increase after LAR to exercise. Therefore, it is crucial to know whether exercise can induce airway inflammation, as in allergen-induced asthma. As an indirect measure to investigate it, we measured the activation status of eosinophil granulocyte in the peripheral blood during the early and late phase of exercise- or allergen-induced asthma. Eight subjects who showed early asthmatic response(EAR) and LAR(group 1), or EAR only (group 2) to allergen (Dermatophagoides pteronyssinus) challenge were selected. Similarly eight subjects who showed EAR and LAR(group 3), or EAR only (group 4) to exercise were selected. Blood samples were drawn at baseline, the early phase, the late phase, and 24 hours after each stimuli. Eosinofphil cationic protein (ECP) was measured in the serum. Eosinophil granulocytes were separated and the production of leukotriene C4 (LTC4) from purified eosinophfis was measured after stimulation with the calciumionophore. Serum levels of ECP were unchanged at EAR after allergen or exercise challenge. In the dual responder to allergen (group 1), serum ECP level was elevated at LAR and 24 hours after allergen challenge, as compared with the baseline level. On the other hand, in the dual responder to exercise (group 3), it remained unaltered up to 24 hours after exercise challenge. Eosinophils at EAR after allergen or exercise challenge in each group generated the similar amounts of LTC4 as baseline values. In group 1, the production of LTC4 was slightly increased though not significantly at LAR, and significantly increased 24 hours after allergen challenge. In group 3, it was increased significantly at LAR, but restored to the baseline values at 24 hours after exercise challenge. These results indicate that not only allergen but also exercise can activate eosinophils in accordance with LAR. The present findings suggest that LAR to exercise may also have the potential to induce airway eosinophilic inflammation although its duration may be shorter than that of LAR to allergen. Therefore exercise should be understood not only as a triggering factor of bronchoconstriction but also as one that incites or deteriorates airway inflammation.
Asthma*
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Bronchoconstriction
;
Child
;
Ear
;
Eosinophils*
;
Granulocytes
;
Hand
;
Humans
;
Inflammation
;
Leukotriene C4
5.Posterior Screw Fixation in Previously Augmented Vertebrae with Bone Cement: Is It Inapplicable?
Jae Hoo PARK ; Chang Il JU ; Seok Won KIM
Journal of Korean Neurosurgical Society 2018;61(1):114-119
OBJECTIVE: The purpose of this study was to determine the feasibility of screw fixation in previously augmented vertebrae with bone cement. We also investigated the influence of cement distribution pattern on the surgical technique.METHODS: Fourteen patients who required screw fixation at the level of the previous percutaneous vertebroplasty or balloon kyphoplasty were enrolled in this study. The indications for screw fixation in the previously augmented vertebrae with bone cement included delayed complications, such as cement dislodgement, cement leakage with neurologic deficits, and various degenerative spinal diseases, such as spondylolisthesis or foraminal stenosis. Clinical outcomes, including pain scale scores, cement distribution pattern, and procedure-related complications were assessed.RESULTS: Three patients underwent posterior screw fixation in previously cemented vertebrae due to cement dislodgement or progressive kyphosis. Three patients required posterior screw fixation for cement leakage or displacement of fracture fragments with neurologic deficits. Eight patients underwent posterior screw fixation due to various degenerative spinal diseases. It was possible to insert screws in the previously augmented vertebrae regardless of the cement distribution pattern; however, screw insertion was more difficult and changed directions in the patients with cemented vertebrae exhibiting a solid pattern rather than a trabecular pattern. All patients showed significant improvements in pain compared with the preoperative levels, and no patient experienced neurologic deterioration as seen at the final follow-up.CONCLUSION: For patients with vertebrae previously augmented with bone cement, posterior screw fixation is not a contraindication, but is a feasible option.
Constriction, Pathologic
;
Follow-Up Studies
;
Humans
;
Kyphoplasty
;
Kyphosis
;
Neurologic Manifestations
;
Osteoporosis
;
Spinal Diseases
;
Spine
;
Spondylolisthesis
;
Vertebroplasty
6.Association Between Socioeconomic Status and All-Cause Mortality After Breast Cancer Surgery: Nationwide Retrospective Cohort Study.
Mi Jin PARK ; Woojin CHUNG ; Sunmi LEE ; Jong Hyock PARK ; Hoo Sun CHANG
Journal of Preventive Medicine and Public Health 2010;43(4):330-340
OBJECTIVES: This study aims to evaluate and explain the socioeconomic inequalities of all-cause mortality after breast cancer surgery in South Korea. METHODS: This population based study included all 8868 females who underwent radical mastectomy for breast cancer between January 2002 and June 2003. Follow-up for mortality continued from January 2002 to June 2006. The patients were divided into 4 socioeconomic classes according to their socioeconomic status as defined by the National Health Insurance contribution rate. The relationship between socioeconomic status and all-cause mortality after breast cancer surgery was assessed using the Cox proportional hazards model with adjusting for age, the Charlson's index score, emergency hospitalization, the type of hospital and the hospital ownership. RESULTS: Those in the lowest socioeconomic status group had a significantly higher hazard ratio of 2.09 (95% CI =1.50 - 2.91) compared with those in the highest socioeconomic group after controlling for all the identifiable confounding variables. For all-cause mortality after radical mastectomy, all the other income groups showed significantly higher 3-year mortality rates than did the highest income group. CONCLUSIONS: The socioeconomic status of breast cancer patients should be considered as an independent prognostic factor that affects all-cause mortality after radical mastectomy, and this is possibly due to a delayed diagnosis, limited access or minimal treatment leading to higher mortality. This study may provide tangible support to intensify surveillance and treatment for breast cancer among low socioeconomic class women.
Adult
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Aged
;
Breast Neoplasms/diagnosis/mortality/*surgery
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Cohort Studies
;
Female
;
Humans
;
Mastectomy, Radical/mortality
;
Middle Aged
;
*Mortality
;
Prognosis
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Republic of Korea/epidemiology
;
Retrospective Studies
;
Risk Factors
;
Socioeconomic Factors
7.Improvement in Clinical Performance of Interns and Residents through Clinical Skills Assessment of the Korean Medical Licensing Examination.
Su Mi KIM ; Incheol PARK ; Hoo Sun CHANG ; Eun Cheol PARK
Korean Journal of Medical Education 2012;24(4):329-338
PURPOSE: To evaluate the clinical performance through the Korean Medical Licensing Examination clinical skills assessment (KMLE CSA) this survey was done. METHODS: A survey of 130 interns and residents (46 applicants and 84 non-applicants for the KMLE CSA) at a university hospital in Seoul was conducted in January and February 2012. The data were gathered using a structured and self-administered questionnaire. For the items that assessed the clinical performance of these subjects, we selected 15 items that are mostly frequently used by Delphi's technique, and difficult procedural skills based on the results of medical students' performance. We also used subcomponents of the clinical problems test of the KMLE CSA. RESULTS: The total score on the KMLE CSA improved by 1.33 points (a perfect score is 10), 1.49 points for procedural skills, and 0.84 points for clinical problems by multiple regression analysis. The variables that influenced clinical skills were sex (females had 0.86 more points than males), experience in military or public services (1.04 points higher than persons without experience), and type of school (graduates of medical school had 1.41 more points than graduates of professional graduate school). CONCLUSION: Implementation of the KMLE CSA improved the clinical performance of medical graduates.
Clinical Competence
;
Humans
;
Licensure
;
Military Personnel
;
Schools, Medical
;
Surveys and Questionnaires
8.Management of Severe Bilateral Ureteropelvic Junction Obstruction in Neonates with Prenatally Diagnosed Bilateral Hydronephrosis.
Jongwon KIM ; Sungwoo HONG ; Chang Hoo PARK ; Hongzoo PARK ; Kun Suk KIM
Korean Journal of Urology 2010;51(9):653-656
PURPOSE: The management of prenatally detected bilateral ureteropelvic junction obstruction (UPJO) remains controversial. We attempted to develop a treatment plan for patients with severe bilateral UPJO. MATERIALS AND METHODS: We evaluated the records of 13 patients with prenatally diagnosed grade 3 or more bilateral hydronephrosis that led to the postnatal diagnosis of severe bilateral UPJO. Ultrasonography and (99m)technetium mercaptoacetyltriglycine ((99m)Tc-MAG3) renal scans were performed within 1 month. Four renal units had grade 3 and 22 had grade 4 hydronephrosis. All 13 patients were managed by unilateral pyeloplasty, and the patients' mean age was 3 months. At 1 month postoperatively, we decided whether delayed surgery in the opposite renal unit was necessary according to the findings of ultrasonography and (99m)Tc-MAG3 scans. RESULTS: Of 13 patients, 11 underwent initial pyeloplasty on renal units with more severe hydronephrosis or lower relative renal function (RRF) on (99m)Tc-MAG3 scans. The remaining 2 patients simultaneously underwent percutaneous nephrostomy on renal units with a lower RRF and initial pyeloplasty on renal units with a higher RRF. In 5 patients, contralateral hydronephrosis had spontaneously improved at 1 month postoperatively, and 8 patients underwent delayed contralateral pyeloplasty at 2 months postoperatively. CONCLUSIONS: In children with severe bilateral UPJO, the non-operated renal units with grade 3 and some with grade 4 hydronephrosis improved spontaneously after unilateral pyeloplasty. Therefore, delayed pyeloplasty of the opposite side should be considered at 1 month following initial pyeloplasty.
Child
;
Humans
;
Hydronephrosis
;
Infant, Newborn
;
Nephrostomy, Percutaneous
;
Ureteral Obstruction
9.Restoration for the foregut surgery: bridging gaps between foregut surgery practice and academia
Ye-lim SHIN ; Shin-Hoo PARK ; Yeongkeun KWON ; Chang Min LEE ; Sungsoo PARK
Journal of Minimally Invasive Surgery 2021;24(4):175-179
Foregut surgery largely involves benign diseases, and not only malignant diseases. However, for foregut surgeons in Asia, this fact has not been extensively utilized in their clinical practice due to the high burden of gastric cancer surgery. Although the prevalence of gastroesophageal reflux disease (GERD) in Eastern Asia, including Korea, is increasing, antireflux surgery (ARS) is still a fairly rare procedure in Korea. ARS is effective as proton pump inhibitors and is cost-effective compared to continuous double-dose proton pump inhibitors in patients with severe GERD. Therefore, we should focus on ARS as a treatment option for GERD also in Asian population. Similarly, although bariatric/metabolic surgery is effective in weight reduction and diabetes mellitus (DM) remission in patients with morbid obesity or DM, bariatric/metabolic surgery is only performed in a limited number of patients. Given that the prevalence of obesity and DM is continuously increasing in Korea, bariatric/metabolic surgery should become an interest among Korean foregut surgeons and should be considered a treatment for obesity and DM. Furthermore, there are new surgical fields that can control both benign and malignant diseases. Oncometabolic surgery is a field under foregut surgery that treats both malignant and benign components of a condition, an example being the control of metabolic syndrome while performing gastric cancer surgery. Therefore, in future gastric cancer treatment, oncometabolic surgery can be applied to patients with gastric cancer accompanied by obesity or metabolic syndrome.
10.Economic Burden of Cancer in Korea during 2000-2010.
Kwang Sig LEE ; Hoo Sun CHANG ; Sun Mi LEE ; Eun Cheol PARK
Cancer Research and Treatment 2015;47(3):387-398
PURPOSE: This study estimated the economic burden of cancer in Korea during 2000-2010 by cancer site, gender, age group, and cost component. MATERIALS AND METHODS: Data came from national health insurance claims data and information from Statistics Korea. Based on the cost of illness method, this study calculated direct, morbidity and mortality cost of cancer in the nation during 2000-2010 by cancer site, gender, and age group. RESULTS: With an average annual growth rate of 8.9%, the economic burden of cancer in Korea increased from 11,424 to 20,858 million US$ (current US dollars) during 2000-2010. Colorectal, thyroid, and breast cancers became more significant during the period, i.e., the 5th/837, the 11th/257, and the 7th/529 in 2000 to the 3rd/2,210, the 5th/1,724, and the 6th/1,659 in 2010, respectively (rank/amount in million US$ for the total population). In addition, liver and stomach cancers were prominent during the period in terms of the same measures, i.e., the 1st/2,065 and the 2nd/2,036 in 2000 to the 1st/3,114 and the 2nd/3,046 in 2010, respectively. Finally, the share of mortality cost in the total burden dropped from 71% to 51% in Korea during 2000-2010, led by colorectal, thyroid, breast, and prostate cancers during the period. These results show that the economic burden of cancer in Korea is characterized by an increasing importance of chronic components. CONCLUSION: Incorporation of distinctive epidemiological, sociocultural contexts into Korea's cancer control program, with greater emphasis on primary prevention such as sodium-controlled diet and hepatitis B vaccination, may be needed.
Aging
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Breast
;
Cost of Illness
;
Diet
;
Hepatitis B
;
Humans
;
Incidence
;
Korea
;
Liver
;
Mortality
;
National Health Programs
;
Primary Prevention
;
Prostatic Neoplasms
;
Stomach Neoplasms
;
Thyroid Gland
;
Vaccination