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이우찬,노승무,장일성,배진선,손기섭 충남대학교 의과대학 지역사회의학연구소 1991 충남의대잡지 Vol.18 No.2
A clinical study of Tobramycin was performed for prophylactic and therapeutic uses in various diseases. 1. Of 30 cases of postoperative patients, in which Tobra^(R) used, 26 cases(86.7%) were cured without infection, and three cases(3.3%) were improved after mild postoperative infections. 2. Tobra^(R) had good antibacterial action agianst E.coli, Pseudomonas, Enterococcus, Klebsiella and Staphylococcus. 3. Hepatotoxicity, nephrotoxicity, ototxicity and other adverse effects of Tobramycin were not developed in this study.
허광식,손현화,김동규,박찬국,김만우,김정용,기근홍 조선대학교 부설 의학연구소 2000 The Medical Journal of Chosun University Vol.25 No.1
Primary unruptured appendiceal mucocele is a rare disease. It is very difficult to diagnose preoperatively because of the rarity of classical symptoms and low incidence. Usually it is discovered incidentally during abdominal ultrasonography(US), computed tomography(CT), or appendectomy for acute appendicitis. If untreated, one type of mucoceles may rupture producing a potentially fatal entity known as pseudomyxoma peritonei, therefore preoperative diagnosis is very important. With the advent of colonoscopy, abdominal US and CT, it has been possible to preoperatively diagnose mucocele of appendix. We experienced a case of appendiceal mucocele in a 60 year-old woman who had symptoms of lower abdominal discomfort and right lower quadrant abdominal pain, and it was diagnosed preoperatively by colonoscopy, abdominal US and CT. So we present this case with review of literature.
Son, Seong,Yoo, Chan Jong,Lee, Sang Gu,Kim, Eun Young,Park, Chan Woo,Kim, Woo Kyung The Korean Neurosurgical Society 2013 Journal of Korean neurosurgical society Vol.54 No.3
Objective : The objectives of the present study were to characterize the natural course of initially non-operated traumatic acute subdural hematoma (ASDH) and to identify the risk factors of hematoma progression. Methods : Retrospective analysis was performed using sequential computed tomography (CT) images maintained in a prospective observational database containing 177 ASDH cases treated from 2005 to 2011. Patients were allocated to four groups as followings; 136 (76.8%) patients to the spontaneous resolution group, 12 (6.8%) who underwent operation between 4 hours and 7 days to the rapid worsening group (RWG), 24 (13.6%) who experienced an increase of hematoma and that underwent operation between 7 and 28 days to the subacute worsening group (SWG), and 5 (2.8%) who developed delayed aggravation requiring surgery from one month after onset to the delayed worsening group (DWG). Groups were compared with respect to various factors. Results : No significant intergroup difference was found with respect to age, mechanism of injury, or initial Glasgow Coma Scale. The presence of combined cerebral contusion or subarachnoid hemorrhage was found to be a significant prognostic factor. Regarding CT findings, mixed density was common in the RWG and the SWG. Midline shifting, hematoma thickness, and numbers of CT slices containing hematoma were significant prognostic factors of the RWG and the SWG. Brain atrophy was more severe in the SWG and the DWG. Conclusion : A large proportion of initially non-operated ASDHs worsen in the acute or subacute phase. Patients with risk factors should be monitored carefully for progression by repeat CT imaging.
Analysis of premature death of Sprague-Dawley rats in carcinogenicity studies
Son, Woo-Chan,Kim, Bae-Hwan The Korean Society of Veterinary Science 2004 大韓獸醫學會誌 Vol.44 No.3
To help the interpretation of causes of death, it is critical that the background incidence of factors contributing to death be recorded and archived. Information was gathered from the control groups of 19 rat carcinogenicity studies. All cases of death occurring within the 2-year period were reviewed. Out of 1124 males and 1084 females, 720 male (64.1%) and 689 female (63.6%) decedents were recorded. There was no difference in the probability of survival between two sexes. Analysis of factors contributing to death revealed that 400 males (48.7%) had neoplastic changes, 189 males (23.0%) had non-neoplastic lesions, and 232 males (28.3%) died from unknown causes. In females, these figures were 627 (76.4%), 62 (7.6%) and 132 (16.0%), for neoplastic, non-neoplastic and unknown findings, respectively. It could be suggested that the risk of death by non-neoplastic reasons was higher in the males than in the females, whereas females were more likely to be affected by tumours. In the neoplastic causes of death, pituitary tumours were the most common in both sexes, followed by mammary tumours in females, and haemopoietic tumours in males. In non-neoplastic cause of death, renal diseases were the most common in both sexes, followed by skin diseases and cardiovascular diseases in males, and skin diseases and poditis in males. A relatively large number of animals (28.3% in males and 16.0% in females) were found dead, without any significant clinical or histologically identifiable cause. Most of the animals with pituitary tumours were killed in extremis and the proportion of females (70.1%) being greater than males (46.8%). There were no case which died by accident, and also only minimal incidence which died by bleeding procedures.
Spontaneous Ovarian Cyst Occuring in CD-1 Mice during 2-year Carcinogenic Test
Woo-Chan Son 한국실험동물학회 2004 Laboratory Animal Research Vol.20 No.1
Spontaneous ovarian pathology of the mouse is well documented elsewhere in the literature. However, naturally occurring ovarian cystic lesions and its detailed incidence have not been made well. This report is intended to establish a general incidence profile of ovarian cysts in aged CD-1 mice. Data from 10 mouse 2-year carcinogenicity studies conducted between 1990 and 2003 at Huntingdon Life Sciences, UK, were collected and evaluated. The analysis was confined to ovaries in control groups. Cystadenoma (0.4%) and cysts (59.9%) were the most common tumour and non-neoplastic findings, respectively. The most frequently occurring cyst was follicular cyst (59.4%), followed by corpus luteal cyst (34.8%) and parovarian cyst (3.8%).
Idiopathic canine polyarteritis in control beagle dogs from toxicity studies
Woo-Chan Son 대한수의학회 2004 Journal of Veterinary Science Vol.5 No.2
It is sometimes difficult to assess the relevance of polyarteritis with treatment-related lesions in dog toxicity studies, as number of dogs used in a toxicity study is small and the lesions are similar to those seen in spontaneous diseases. This report is intended to establish a general profile of idiopathic canine polyarteritis in beagle dogs. Data from a total of 40 dog studies including 4-, 13- or 52-weeks studies conducted between 1990 and 2003 at Huntingdon Life Sciences, UK, were collected and analysed. There was no death by this disease and also no prominent clinical signs related to this disease. Histologically, males tended to develop polyarteritis more frequently than in females and epididymis is the most probable tissues, followed by thymus and heart. Dogs in two studies showed higher incidences of these lesions, whereas animals in the other studies did not exhibited, suggesting that genetic predilection plays an important role in this disease.
Son, Seong,Lee, Sang-Gu,Kim, Woo-Kyung,Park, Chan-Woo,Yoo, Chan-Jong The Korean Neurosurgical Society 2014 Journal of Korean neurosurgical society Vol.56 No.3
Objective : In Korea, early vertebroplasty (EVP) or delayed vertebroplasty (DVP, which is performed at least 2 weeks after diagnosis) were performed for the treatment of acute osteoporotic compression fracture (OCF) of the spine. The present study compared the outcomes of two surgical strategies for the treatment of single-level acute OCF in the thoracolumbar junction (T12-L2). Methods : From 2004 to 2010, 23 patients were allocated to the EVP group (EVPG) and 27 patients to the DVP group (DVPG). Overall mean age was $68.3{\pm}7.9$ and minimum follow-up period was 1.0 year. Retrospective study of clinical and radiological results was conducted. Results : No significant differences in baseline characteristics were observed between the two groups. As expected, mean duration from onset to vertebroplasty and mean duration of hospital stay were significantly longer in the DVPG ($17.1{\pm}2.1$ and $17.5{\pm}4.2$) than in the EVPG ($3.8{\pm}3.3$ and $10.8{\pm}5.1$, p=0.001). Final clinical outcome including visual analogue scale (VAS), Oswestry Disability Index, and Odom's criteria did not differ between the two groups. However, immediate improvement of the VAS after vertebroplasty was greater in the EVPG ($5.1{\pm}1.3$) than in the DVPG ($4.0{\pm}1.0$, p=0.002). The proportion of cement leakage was lower in the EVPG (30.4%) than in the DVPG (59.3%, p=0.039). In addition, semiquantitative grade of cement interdigitation was significantly more favorable in the EVPG than in the DVPG (p=0.003). Final vertebral body collapse and segmental kyphosis did not differ significantly between the two groups. Conclusion : Our findings suggest that EVP achieves a better immediate surgical effect with more favorable cost-effectiveness.