1.Shigellosis - Pathogenesis and Current Epidemics.
Chul Hun Ludgerus CHANG ; Geun Am SONG ; Bok Kwon LEE
Korean Journal of Clinical Microbiology 1999;2(2):118-124
No abstract available.
Dysentery, Bacillary*
2.Two Cases of Segmental Neurofibromatosis.
Chang Geun CHO ; Il Hwan KIM ; Hae Jun SONG ; Chil Hwan OH
Korean Journal of Dermatology 1998;36(6):1083-1087
Neurofibromatosis(NF) is a disorder characterized by its relative commonness, variability, and heterogeneity. It is usually expressed as a generalized form, but is rarely localized in a limited part of the body as a segmental form. In 1981, Riccardi classified NF into 8 types and a segmental form (type V) was defined by limitation of cafe-au-lait spots and/or neurofibroma on a given unilateral segment of the body. Recently we came across two cases of typical segmental neurofibromatosis. The First case was a 53-year-old woman with localized neurofibromatosis on the right T8,9 dermatome. The Second case was a 34-year-old man with localized neurofibromatosis on the right T5,6 dermatome. There were no cafe-au-lait spots, axillary frecklings, Lisch nodules or a family history in both cases. We report these rare cases with a literature review.
Adult
;
Cafe-au-Lait Spots
;
Female
;
Humans
;
Middle Aged
;
Neurofibroma
;
Neurofibromatoses*
;
Population Characteristics
3.A Case of Umbilical Omphalomesenteric Duct Polyp.
Chang Geun CHO ; Seung Hyun HONG ; Gil Ju YI ; Hae Jun SONG ; Chil Hwan OH
Korean Journal of Dermatology 1998;36(1):107-110
A umbilical omphalomesenteric duct polyp is the result of incomplete closure of the omphalomesenteric duct, which connects the midgut with the yolk sac of the embryo. It may be associated with underlying embryologic anomalies such as Meckels diverticulum and umbilical enteric fistula, the complications of which may at times be fatal. This rare malformation should be clinically discerned from persistent granulation tissue or pyogenic granuloma. Histologically, it shows a polypoid lesion consisting of ectopic gastrointestinal epithelium with the appearance of gastric, intestinal, or colonic mucosa. We report a case of an umbilical omphalomesenteric duct polyp in an 8-year-old male patient, who had had a bright-red polyp on the umbilicus from the age of 1 month and had not had any other types of underlying abnormalities.
Child
;
Colon
;
Diverticulum
;
Embryonic Structures
;
Epithelium
;
Fistula
;
Granulation Tissue
;
Granuloma, Pyogenic
;
Humans
;
Male
;
Mucous Membrane
;
Polyps*
;
Umbilicus
;
Vitelline Duct*
;
Yolk Sac
4.INFLUENCE OF TOOTH SURFACE ROUGHNESS AND TYPE OF CEMENT ON RETENTION OF COMPLETE CAST CROWNS.
Kil Su KIM ; Chang Yong SONG ; Seung Geun AHN ; Charn Woon PARK
The Journal of Korean Academy of Prosthodontics 1999;37(4):465-473
Bond strength of luting cements to dentin is a critical consideration for success of complete cast crowns. This study was performed to evaluate the relationship between surface characteristics of teeth prepared for complete cast crowns and retention of cemented restorations. Eighty artificial crowns were cast for standardized complete crown tooth preparations accomplished with the use of a special device on recently extracted human teeth. Coarse diamond(#102R, Shofu) and superfine finishing diamond(#SF102R, Shofu) burs of similar shape were used. Crowns in each group were randomly subdivided into four subgroups of 10 for luting cements selected for this study: zinc phosphate cement (FLECK'S), polycarboxylate cement (Poly-F), reinforced glass ionomer cement (Fuji PLUS), and adhesive resin cement (Panavia 21). Retention was evaluated by measuring the tensile load required to dislodge the artificial crown from tooth preparations with an Instron testing machine, and analysed by one-way ANOVA and Student's t-test. The obtained results were as follows ; 1. When tooth preparation was done with coarse diamond bur, retentive force was diminished in order of Panavia 21, Fuji PLUS, FLECK'S, and Poly-F. Retentive forces showed the significant difference between Fuji PLUS group and FLECK'S group(p<0.001). 2. When tooth preparation was done with superfine diamond bur, retentive force was diminished in order of Fuji PLUS, Panavia 21, FLECK'S and Poly-F. Retentive forces showed the significant difference between Panavia 21 group and FLECK'S group(p<0.001). 3. Retentive force in coarse tooth surfaces was significantly higher than that in superfine tooth surface with all luting cements(p<0.001), and cement residues were almost retained with in the cast crown in all groups.
Adhesives
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Crowns*
;
Dental Instruments
;
Dentin
;
Glass Ionomer Cements
;
Humans
;
Polycarboxylate Cement
;
Resin Cements
;
Tooth Preparation
;
Tooth*
;
Zinc Phosphate Cement
5.Metal Failure of Pedicle Screw System.
Kyu Yeol LEE ; Chul Hong KIM ; Chang Geun SONG
Journal of Korean Society of Spine Surgery 2002;9(2):157-163
STUDY DESIGN: The metal failure of pedicle screw system followed by posterolateral or posterior fusion used in variable cases(spine fracture, degenerative disorder of spine, deformity of spine) was analyzed retrospectively. PURPOSE: The goal of this study was to analyze frequency and clinical consequence of pedicle screw fixation system failure in the treatment of different etiology(spine fracture, degenerative disorder, deformity of spine) and to evaluate affected factors in metal failure. MATERIALS AND METHODS: We performed survivorship analysis on 442 patients treated with pedicle screw system from September 1990 to December 1999. The average follow-up period was 54 months(from 18 months to 129 months). As affected factors, some variables such as etiology, kinds of system and extent of fusion were subjected to analyzed their influence on metal failure. We also performed analysis about relationship between metal failure and clinical results. We defined the metal failure as 1) breakage of screw or rod 2) screw bending above 5 degrees 3) dissociation of rod-screw coupling system and 4) screw pull out from vertebral body or pedicle. RESULTS: We found out 33 cases of metal failure: among 2786 screws, 41 screws had a problem. The metal failure rate was different between each etiology ; 12 cases in fracture(10%), 21 cases in degenerative disorder(6.9%). There was also difference between a kinds of implants; 13 cases in side assembling type(5.4%), 20 cases in back open type(10.5%). However, there were no difference according to extent of fusion; 6 cases in one segment(6.9%), 21 cases in two segments(8.1%), 6 cases in more than three segments(6.3%). Among the overall patients with metal failure (33 cases), only eight patients were complaint significant symptoms. And three of this eight patients were improved after reoperation The mean interval to metal failure was 14.4 months from operation. CONCLUSION: The metal failure was more common in spine fracture(p<0.05) and back open type pedicle system(p<0.05). However, there was no relationship with extent of fusion(p>0.05). And metal failure did not significantly affect the clinical results(p>0.05).
Congenital Abnormalities
;
Follow-Up Studies
;
Humans
;
Reoperation
;
Retrospective Studies
;
Spine
;
Survival Rate
6.A Case of Intracardiac Migration of Distal Ventriculo-Peritonal(V-P) Shunt Catheter.
Byung Joo KIM ; Seung Heon CHA ; Dong June PARK ; Geun Sung SONG ; Chang Hwa CHOI ; Young Woo LEE
Journal of Korean Neurosurgical Society 2000;29(2):270-273
No abstract available.
Catheters*
7.A Study on Changes of Serum HDL-Cholesterol Level in Some Diseases.
Hang Geun PARK ; Woong Shik SHIN ; Kyeung Hwan YOU ; Jong Soo LEE ; Young Woo LEE ; Chang Sup SONG
Korean Circulation Journal 1987;17(3):471-478
A study on changes of serum HDL-cholesterol level in various diseased states was performed. Diseased groups were nephrotic syndrome, liver cirrhosis, hyperthyroidism, hypothyroidism and chronic alcoholism. Following results were obtained. 1) Compared to normal control group, levels of HDL-cholesterol in nephrotic syndrome were lower but the difference was significant statistically. 2) In liver cirrhosis, the result showed much lower levels than normal control group with high significance. 3) In both hyper-and hypothyroidism group, the levels of HDL-cholesterol were significantly lower than normal control group. 4) In chronic alcoholism, the levels were significantly higher than normal control group. 5) Except for the group of chronic alcoholism, the levels of HDL- cholesterol were higher in female groups than male groups, but was of no significance statistically.
Alcoholism
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Cholesterol
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Female
;
Humans
;
Hyperthyroidism
;
Hypothyroidism
;
Liver Cirrhosis
;
Male
;
Nephrotic Syndrome
8.Bilateral aorto-renal bypasses: report of one case.
Young Chul YOON ; Jung Geun SONG ; Chul Hyun PARK ; Shin Yeong LEE ; Sang Joon OH ; Chang Ho KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 1992;25(2):200-204
No abstract available.
9.Understanding Nutritional Support in Digestive Diseases.
Dong Kyung CHANG ; Geun Am SONG
The Korean Journal of Gastroenterology 2015;65(6):333-335
The prevalence of hospital malnutrition is still high in patients with digestive diseases, especially for those suffering from cancer and bowel diseases which cause malabsorption. It is well known that malnutrition is associated with delayed wound healing, impaired immunity, infection, increased complication, and poor convalenscence. Recently, nutrition screening and assessment by nutrition support team has become essential for nutrition management, and gastroenterologists comprise a dominant member of the nutrition support team. In critically ill patients and older people with chronic disease, nutritional support with enteral feeding and early feeding contributes to recovery and rehabilitation of patients. Securing enteral feeding routes, such as feeding tube insertion and placement of percutaneous endoscopic gastrostomy/jejunostomy, is an essential part of nutrition care that should be accomplished by gastroenterologists without much difficulty. It will also be necessary to recommend nutrition care as one of the clinical routines in gastrointestinal clinical practices. Therefore, education on nutrition care is strongly required as a part of gastroenterologist's training.
Critical Illness
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Digestive System Diseases/*pathology
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Enteral Nutrition
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Humans
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Malnutrition/*prevention & control
;
*Nutritional Support
10.Chondrosarcoma Arising from Benign Bone Tumor due to Malignant Transformation.
Wan hyeong CHO ; Won Seok SONG ; Chang Bae KONG ; Yun Suk HONG ; Jung Dong LEE ; Dae Geun JEON
The Journal of the Korean Bone and Joint Tumor Society 2011;17(1):17-22
PURPOSE: We analyzed the oncological outcome and prognostic factor of the chondrosarcoma arising from benign bone tumor due to malignant transformation. MATERIALS AND METHODS: From April 1986 to April 2009, 18 cases were considered eligible. We analyzed retrospectively the patient's characteristics and prognostic factors that affect to the local recurrence and distant metastasis. RESULTS: As classified by primary benign bone tumor, 4 cases were solitary osteochondroma, 11 cases were multiple osteochondromatosis and 3 cases were multiple enchondromatosis. The mean follow-up period was 85 months. The 5-year disease free survival rate of 18 patients was 85.9%. Their overall MSTS score was 25.2 (84%). There were local recurrence in 3 cases and no distant metastasis. We found that tumor location and surgical margin affected to the prognosis significantly. CONCLUSION: In secondary chondrosarcoma patients, the prognosis was good relatively and tumor location and surgical margin are important prognosis factor.
Chondrosarcoma
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Disease-Free Survival
;
Enchondromatosis
;
Follow-Up Studies
;
Humans
;
Neoplasm Metastasis
;
Osteochondroma
;
Osteochondromatosis
;
Prognosis
;
Recurrence
;
Retrospective Studies