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추성욱(Sung Wook Choo),이재욱(Jae Wook Lee),이장규(Jang Kyu Lee),김성준(Sung Jun Kim),이덕영(Duck Young Lee),박경현(Gyeng Hyen Park),허충(Chung Hur),이진관(Jin Kwan Lee) 대한내과학회 1998 대한내과학회지 Vol.54 No.5
N/A Background: Primary epiploic appendagitis is rarely diagnosed preoperatively and usually results from torsion with subsequent infarction epiploic appendage. Until recent years no diagnostic procedures or clinical symptoms were pathognomic for this disease and the most common pre-operative diagnosis were acute diverticulitis and appendicitis. Rapid advance of imaging technique, especially ultrasound, makes it possible to get image of diseased epiploic appandage. Also primary epiploic appendagitis occurs more frequently than it has been suggested in the literature. Therefore authors analyzed and reviewed clinical features and radiological findings of 15 cases with primary epiploic appen4agitis to give attention to the acute epiploic appendagitis as one of the ways for diagnosing the acute abdominal pain that has unclear diagnosis, thinking that the rapid diagnosis will helpful to escaping the unnecessary operations. Methods: This study included twelve men and three women (aged 20-60years). Surgery was done in two patients, one misdiagnosed for acute appendicitis and another for acute diverticulitis with abscess. Follow up examinations were performed with US and CT (n=3), with US, CT and MHI (n-2) and with clinical course (n=13). Results: All patients had localized abdominal pain and tenderness, mostly in the left lower quadrants (n=12). Duration of pain was 3.3 days (1-15days). Two patients had mild fever and two patients had nausea. Leukocytosis was found in four patients. In all cases US revealed a solid hyperechoic (n=13) or isoechoic (n=2) non-compressible ovoid mass with hypoechoic rim The masses were located under the site of maximum tenderness. CT and MRI finding were compatible with US. Conclusion: Primary epiploic appendagitis can be diagnosed pre-operatively using recent imaging technique, and US finding is fairly characteristic. This disorder is not so rare entity as previously known and must be included in the differential diagnosis of acute unexplained abdominal pain in adults.
추성욱,김경남,김광만,이원유,박용수,이상배 대한치과기재학회 1998 대한치과재료학회지 Vol.25 No.3
Esthetic has become an indispensable factors to consider when choosing a orthodontic fixed appliances. However, most of the brackets used on orthodontics are made of metallic materials because those esthetic alternatives showed several controversies like brittleness, deformation and discoloration. The AISI austenitic classes, 303, 304, 316 and 317 type of stainless steels are frequently used for orthodontic metallic brackets fabrication. The composition of this type of alloy is 18 wt% of chrome, 8 wt% of nickel, 2 to 3 wt% of molybdenum and low carbon contents. They seemed to show relatively good characteristics to fabricate the orthodontic brackets in previous study. But in hostile condition such as low pH containing chlorine ion like saliva they might to be attacked by localized corrosion. The purposes of this study were to evaluate the microstructure, microhardness, corrosion resistance, frictional resistance and cytotoxocity of 316L(MD), AISI 304(AC) and experimentally produced super stainless stell bracket(SS). The results from this study were as follows; 1. MD and AC showed (Cr, Fe)23C6 precipitating in austenite matrix. SS showed small ferrite island forming in matrix. 2. SS showed the highest polarization resistance(Rp). SS seemed to have the highest corrosion resistance since SS showed 0.9 ×10-3 MPY, MD showed 3.7 ×10-3 MPY and AC showed 7.4×10-3 MPY. 3. The friction resistance decreased from 3 days to 4 weeks for SS(p<0.05). MD showed significant differences for the measurement of 3 days, 2 weeks and 4 weeks. AD did not showed significant differences to 3 days but increased at 2 weeks(p<0.05). 4. SS seemed to have the best biocompatibility since SS showed response index of 0/1 (mild), AC showed 1/2 (mild+) at cytotoxicity test. According to these results, SS seemed to have sufficient characteristics to fabricate the orthodontic brackets and superior corrosion resistance compare to AISI 300 type stainless steel which could lower the chance of nickel allergic reaction.
조기위암 수술 후 문합부에 발생한 원발성 위방선균증 1예
이재욱,이장규,이진관,박경현,허충,추성욱 대한소화기내시경학회 1996 Clinical Endoscopy Vol.16 No.5
Primary gastric actinomycosis is an extremely rare disease and less than 20 cases are reported in literature. We experienced a case of gastric actinomycosis in the 63-year-old woman who had subtotal gastrectomy for early gastric cancer(type IIc) 7 month ago. Endoscopic biopsy from elevated lesion on stoma was found to show the neutrophilic infiltration and sulfur granule. She placed on tetracycline for 30 days. Follow up endoscopy showed no abnormality. We report this case with literature review.