A total of 47 preoperative CT scans in patients with renal cell carcinoma were retrospectively reviewed and compared with surgical findings to assess the accuracy of CT for determining the perinephric tumor extension. CT criteria for perinephric extension were hazy ill-defined tumor margin, perirenal nodule and fascial thickening. Regardless of the tumor stage, the accuracy of CT in detecting perinephric extension was 76.6%(36/47), with a sensitivity of 88.9% (16/18) and specificity of 68.9% (20/29). The cause of understaging (n=2) was microscopic infiltration of the perinephric space. The causes of overstaging were tumor infiltration to the renal capsule (n=5), partial adhesion with the perinephric fat (n=3) and renal vein thrombosis (n=1). A smooth clear tumor margin is highly reliable sign for stage I but infiltrative findings onto renal capsule and perirenal fat could be considered stage I.
Carcinoma, Renal Cell ; Humans ; Renal Veins ; Retrospective Studies ; Sensitivity and Specificity ; Thrombosis ; Tomography, X-Ray Computed

A total of 47 preoperative CT scans in patients with renal cell carcinoma were retrospectively reviewed and compared with surgical findings to assess the accuracy of CT for determining the perinephric tumor extension. CT criteria for perinephric extension were hazy ill-defined tumor margin, perirenal nodule and fascial thickening. Regardless of the tumor stage, the accuracy of CT in detecting perinephric extension was 76.6%(36/47), with a sensitivity of 88.9% (16/18) and specificity of 68.9% (20/29). The cause of understaging (n=2) was microscopic infiltration of the perinephric space. The causes of overstaging were tumor infiltration to the renal capsule (n=5), partial adhesion with the perinephric fat (n=3) and renal vein thrombosis (n=1). A smooth clear tumor margin is highly reliable sign for stage I but infiltrative findings onto renal capsule and perirenal fat could be considered stage I.
Carcinoma, Renal Cell ; Humans ; Renal Veins ; Retrospective Studies ; Sensitivity and Specificity ; Thrombosis ; Tomography, X-Ray Computed

Coagulants have been used for a long time to promote the hemostasis during operation. We have carried out the study to see the effect of the thromboplastin preparation. Thrombokinase, on the coagulation mechanism, thrombin time, partial thromboplastin time, Ca++, and operation time and amount of bleeding in the twenty patients undergoing laminectomy or femur fracture operation. The patients were divided into two groups, in the control group(n=10), disllied water 20ml, and in the Thrombokinase group(n=10), 20ml of Thrombokinase(4 amles) was administered intravenously during 5 minutes. The results were as follows: 1) Prothrombin time and partial thromboplastin time were significantly prolonged in the control group compared to the Thrombokinase group(p<0.05). 2) In the Thrombokinase group, the duration of operation was shorter and the amount of blood loss was less than in the control group, but there was no significant statistical difference(p>0.05).3) There was no change in either blood pressure or pulse rate and also no side reaction during or after the Thromobkinase injection.
Blood Coagulation* ; Blood Pressure ; Coagulants ; Factor Xa* ; Femur ; Heart Rate ; Hemorrhage ; Hemostasis ; Humans ; Laminectomy ; Partial Thromboplastin Time ; Prothrombin Time ; Thrombin Time ; Thromboplastin* ; Water

STATEMENT OF PROBLEM: Although zirconium oxide ceramics are more and more commonly used in restorative dentistry, for many clinical applications only limited data can be found in the literature. However, it is quite clear that hydrofluoric acid etching is impossible with zirconia ceramics. Therefore, other bonding techniques are required in order to lute these materials adhesively. PURPOSE: The purpose of this study was to evaluate the effects of surface treatments on shear bond strengths between two resin cements and a zirconia ceramic. MATERIALS AND METHODS: Experimental industrially manufactured yttrium-oxide-partially-stabilized zirconia ceramic discs (Adens, Korea) were used for this study. The ceramic specimens divided into five experimental groups and a control group (as received). Five surface treatments were studied. 1) sandblasting with 110 micrometer Al2O3 at 3 bars pressure 13 seconds at a distance of 10mm, 2) flame-treated with the Silano-Pen for 5 s/cm2, 3) grinding with a diamond bur, 4) sandblasting + Silano-Pen treatment, 5) diamond bur preparation+ Silano-Pen treatment. Acrylic plastic tube (5 mm in height and 3 mm in diameter) were filled with composite to fabricate composite cylinders. The composite cylinders were bonded to the ceramic specimens with either Superbond C & B or Panavia F resin luting agents. All cemented specimens were tested under shear loading until fracture on universal testing machine at a crosshead speed 1mm/min, the maximum load at fracture was recorded. Shear bond strength data were analyzed with oneway analysis of variance and Tukey HSD tests (p<.05). Treated ceramic surfaces and fracture surfaces after shear testing were examined morphologically using scanning electron microscope. Results: Ceramic surface treatment with Silano-Pen after sandblasting improved the bond strength of Superbond C & B resin cement. Superbond CandB resin cement at Silano-Pen after sandblasting(27.4 +/- 3.8 MPa) showed statistically higher shear bond strength than the others. CONCLUSION: Within the limitation of this study, Superbond C & B resin cement are suitable for cementation of zirconia ceramics and flame-treated with the Silano-Pen after sandblasting is required to enhance the bond strength.
Cementation ; Ceramics* ; Dental Cements ; Dental Instruments ; Dentistry ; Hydrofluoric Acid ; Plastics ; Resin Cements* ; Zirconium

OBJECTIVES: This study is intended to evaluate the effects of promotion of periodontal health in the elderly, through professional toothbrushing and education on the use of the interdental brush, using the Gingival Bleeding Index and the Patient Hygiene Performance Index (PHP index). METHODS: The study was conducted on 87 participants, who had given the informed consent to participate in the study at a general hospital 'B' in Busan from June to August, 2011. After assessing the general health condition and the medical history of the participants, the Watanabe toothbrushing method was used for professional toothbrushing on four different visits, along with imparting of education on the use of the interdental brush for self-management. The periodontal health of the participants was assessed based on the extent of gingival bleeding, by using the Gingival Bleeding Index, and the degree of plaque accumulation, by using the Patient Hygiene Performance Index. The data thus obtained was analyzed using Statistical Analysis Systems (SAS) (ver 9.13), followed by frequency analysis, analysis of variance (ANOVA), and the mixed effect model. RESULTS: The average gingival bleeding index was 1.65 at the commencement of the study and 1.25, 0.88, and 0.65, after the first, second and third trial, respectively. The PHP index of dental plaque was 2.90 prior to commencement of the study, 2.79, 2.77, and 2.76 after the first, second, and third trials, respectively, thus significantly improving with every successive visit. Gingival bleeding index and PHP index significantly reduced with every visit, regardless of age, smoking habits, or systemic chronic diseases such as diabetes, hypertension, central nervous system or cardiovascular diseases. CONCLUSIONS: Education on the use of the interdental brush and professional tooth brushing promotes periodontal health, regardless of the chronic diseases seen in the elderly. Education on self-management of oral health, along with professional care at regular intervals should be recommended to effectively maintain periodontal health in the elderly.
Aged ; Central Nervous System ; Chronic Disease ; Dental Plaque ; Hemorrhage ; Hospitals, General ; Humans ; Hygiene ; Hypertension ; Informed Consent ; Oral Health ; Self Care ; Smoke ; Smoking ; Tooth ; Toothbrushing

Myoepithelial carcinoma is a rare malignant tumor of the salivary glands with an incidence of less than 1%. Most cases arise in the parotid gland but have also been described in the submandibular gland and in the minor salivary glands. Myoepithelial carcinoma shows almost exclusively tumor cells with myoepithelial differentiation, although epithelial-myoepithelial carcinoma is characterized by a biphasic cell population represented by myoepithelial and ductal epithelial cells. Although myoepithelial carcinoma arising in the maxillary sinus has been reported, there is no report of myoepithelial carcinoma that has originated from inferior turbinate. We report, with a review of literature, a 72-year-old female patient diagnosed as myoepithelial carcinoma that has originated from the inferior turbinate of left nasal cavity.
Aged ; Epithelial Cells ; Female ; Humans ; Incidence ; Maxillary Sinus ; Myoepithelioma ; Nasal Cavity ; Parotid Gland ; Salivary Glands ; Salivary Glands, Minor ; Submandibular Gland ; Turbinates

PURPOSE: The study was done to examine undergraduate student' suicidal ideation and to identify influences of individual characteristics including psychological resilience and self-control on suicidal ideation. METHODS: Data were collected from 400 students in 11 universities in D city from May 1 to June 30, 2011. Data were analyzed with t-test, one-way ANOVA and Pearson' correlation using SPSS 19.0. RESULTS: Of the students, 11.3% reported suicidal ideation levels higher than average. Woman students and those with high career anxiety, perceived poor health condition and bad relationships showed higher points on suicidal ideation. Suicidal ideation was also negatively correlated with psychological resilience and self-control. CONCLUSION: Over 10.0% of students need careful attention on suicidal ideation, especially counselling service related to suicide prevention for students with poor health, high career anxiety, and bad relationships. Various programs should be developed to promote psychological resilience to improve health and relationships, as well as job guidance for students. It is also suggested the students' experiences be examined to determine how they overcame suicidal ideation.
Anxiety ; Female ; Humans ; Resilience, Psychological* ; Suicidal Ideation* ; Suicide

PURPOSE: To investigate the correlations between parameters of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) and prognostic factors in rectal cancer. MATERIALS AND METHODS: We studied 29 patients with rectal cancer who underwent gadolinium contrast-enhanced, T1-weighted DCE-MRI with a three Tesla scanner prior to surgery. Signal intensity on DCE-MRI was independently measured by two observers to examine reproducibility. A time-signal intensity curve was generated, from which four semiquantitative parameters were calculated: steepest slope (SLP), time to peak (Tp), relative enhancement during a rapid rise (Erise), and maximal enhancement (Emax). Morphologic prognostic factors including T stage, N stage, and histologic grade were identified. Tumor angiogenesis was evaluated in terms of microvessel count (MVC) and microvessel area (MVA) by morphometric study. As molecular factors, the mutation status of the K-ras oncogene and microsatellite instability were assessed. DCE-MRI parameters were correlated with each prognostic factor using bivariate correlation analysis. A p-value of <0.05 was considered significant. RESULTS: Erise was significantly correlated with N stage (r=-0.387 and -0.393, respectively, for two independent data), and Tp was significantly correlated with histologic grade (r=0.466 and 0.489, respectively). MVA was significantly correlated with SLP (r=-0.532 and -0.535, respectively) and Erise (r=-0.511 and -0.446, respectively). MVC was significantly correlated with Emax (r=-0.435 and -0.386, respectively). No significant correlations were found between DCE-MRI parameters and T stage, K-ras mutation, or microsatellite instability. CONCLUSION: DCE-MRI may provide useful prognostic information in terms of histologic differentiation and angiogenesis in rectal cancer.
Adult ; Aged ; Aged, 80 and over ; Cell Differentiation ; Contrast Media/*pharmacology ; DNA Mutational Analysis ; Female ; Gadolinium/pharmacology ; Genes, ras ; Humans ; Magnetic Resonance Imaging/*methods ; Male ; Microcirculation ; Microsatellite Instability ; Middle Aged ; Neoplasm Staging ; Neovascularization, Pathologic ; Prognosis ; Rectal Neoplasms/*diagnosis/genetics/*pathology ; Retrospective Studies ; Time Factors

Gastric cavernous hemangioma is a relatively rare benign gastric disease. Gastric hemangiomas are most commonly encountered in adulthood, although they can occur in any age group. While surgical resection is the curative treatment, endoscopic resection can be performed for treatment of selected cases. The patient was a 53-year-old male who was referred for evaluation of incidentally detected gastric subepithelial tumor with dense vascularity and oozing on the apex of the lesion. An EUS revealed a homogenously hypoechoic mass confined to the submucosal layer that showed no continuity with adjacent vessels, and there was no regional lymphadenopathy. Endoscopic submucosal dissection was successfully performed with en bloc resection. The final diagnosis was benign cavernous hemangioma of the stomach.
Hemangioma ; Hemangioma, Cavernous ; Humans ; Male ; Middle Aged ; Stomach ; Stomach Diseases

Following the implementation of a long-term care insurance system for the elderly in Korea, many nursing homes have been established and many more patients than ever before have been living at nursing homes. Despite the fact that this is a high-risk group vulnerable to hip fractures, no study has yet been conducted in Korea on hip fracture incidence rates and prognoses among patients residing at nursing homes. We recently studied 46 cases of hip fracture in nursing homes; more specifically, we investigated the most common conditions under which fractures occur, and examined the degree of recovery of ambulatory ability and the mortality within 1 yr. Among those who had survived after 1 yr, the number of non-functional ambulators increased from 8 hips before hip fracture to 19 hips at final post-fracture follow-up. These individuals showed poor recovery of ambulatory ability, and the number who died within one year was 11 (23.9%), a rate not significantly different from that among community-dwelling individuals. It was evident that hip-joint-fracture nursing home residents survived for similar periods of time as did those dwelling in the community, though under much more uncomfortable conditions. The main highlight of this report is that it is the first from Korea on nursing home residents' ambulatory recovery and one-year mortality after hip fracture. The authors believe that, beginning with the present study, the government should collect and evaluate the number of hips fractured at nursing facilities in order to formulate criteria that will help to enable all patients to select safer and better-quality nursing facilities for themselves or their family members.
Aged ; Aged, 80 and over ; Body Mass Index ; Cerebrovascular Disorders/etiology ; Dementia/etiology ; Female ; Hip Fractures/complications/*epidemiology/mortality ; Humans ; Insurance, Long-Term Care ; Kaplan-Meier Estimate ; Male ; Nursing Homes ; Odds Ratio ; Parkinson Disease/etiology ; Republic of Korea/epidemiology ; Risk Factors