No abstract available.

Implant prosthodontics is beneficial for edentulous patients in enhancing the support, retention, stability, phonation and so on. Various types of prosthesis supported by implant, including implant retained- or supported-overdenture for the removable type and ceramo-metal and fixed prostheses with processed acrylic teeth for the fixed type, are frequently used. Treatment planning for the prosthesis with implant must be made after considering individual characteristics such as form of residual ridge, soft tissue, interocclusal relationship, economic status. Fixed prosthesis with processed acrylic teeth (also known as 'implant hybrid prosthesis' or 'bone anchored bridge') has the advantages of both removable and fixed prosthesis such as proper soft tissue profile, esthetic outcome, increased masticatory efficiency and psychological stability. The 73-years-old female patient came to the department of prosthodontics, Dental hospital of Yonsei University. She was diagnosed with Kennedy class I partial edentulism in the maxilla and complete edentulism in the mandible. This article reports a satisfactory clinical and esthetic outcome of full mouth rehabilitation using removable partial denture in the maxilla and implant hybrid prosthesis in the mandible.
Chimera ; Dental Prosthesis, Implant-Supported ; Denture, Partial, Removable ; Female ; Humans ; Mandible ; Maxilla ; Mouth ; Mouth Rehabilitation ; Phonation ; Porphyrins ; Prostheses and Implants ; Prosthodontics ; Retention (Psychology) ; Tooth

Malignant deciduoid mesothelioma is a rare malignant neoplasm occurring in the peritoneum of young women. We report a case of malignant deciduoid mesothelioma that occurred in the omentum of a 47-year-old woman. The patient had never exposed to asbestos and had no history of cesarean section. The lesions were multiple infiltrative nodules affected the peritoneal cavity, omentum, and surface of the uterus with both ovaries. Microscopically, the nodules were composed of mesothelial cells similar to decidual cells
Asbestos ; Cesarean Section ; Female ; Humans ; Mesothelioma* ; Middle Aged ; Omentum ; Ovary ; Peritoneal Cavity ; Peritoneum ; Pregnancy ; Uterus

Objective: Suicidal ideation (SI) precedes actual suicidal event. Thus, it is important for the prevention of suicide to screen the individualswith SI. This study aimed to identify the factors associated with SI and to build prediction models in Korean adults using machinelearning methods. Methods: The 2010–2013 dataset of the Korea National Health and Nutritional Examination Survey was used as the training dataset(n=16,437), and the subset collected in 2015 was used as the testing dataset (n=3,788). Various machine learning algorithms were appliedand compared to the conventional logistic regression (LR)-based model. Results: Common risk factors for SI included stress awareness, experience of continuous depressive mood, EQ-5D score, depressivedisorder, household income, educational status, alcohol abuse, and unmet medical service needs. The prediction performances of themachine learning models, as measured by the area under receiver-operating curve, ranged from 0.794 to 0.877, some of which were betterthan that of the conventional LR model (0.867). The Bayesian network, LogitBoost with LR, and ANN models outperformed the conventionalLR model. Conclusion A machine learning-based approach could provide better SI prediction performance compared to a conventional LRbasedmodel. These may help primary care physicians to identify patients at risk of SI and will facilitate the early prevention of suicide.Psychiatry Investig 2020;17(4):331-340

The clinical manifestations of leukemic patients who have temporal bone infiltration are acute mastoiditis, hearing impairment, tinnitus, dizziness, otorrhea, retro-auricular mass and facial nerve palsy. Otologic manifestations of leukemic patients have also been reported several times. However, reports about temporal bone infiltration by leukemic cells after complete remission have been rare, and there have not yet been any reports about both temporal bone infiltration that has been confirmed by mastoid biopsy after remission. We recently experienced a case of recurring acute myelogenous leukemia in both temporal bones after a complete remission and report it with a review of the literature.
Biopsy ; Dizziness ; Facial Nerve ; Hearing Loss ; Humans ; Leukemia ; Leukemia, Myeloid, Acute* ; Mastoid ; Mastoiditis ; Paralysis ; Temporal Bone* ; Tinnitus

PURPOSE: The purpose of the current in vitro study was to evaluate the transfer of metal to both alumina and cobalt-chrome (Co-Cr) heads that were scraped by a titanium alloy surface under different load conditions. MATERIALS AND METHODS: Alumina and Co-Cr heads were scraped by an acetabular metal shell under various loads using a creep tester. Microstructural changes in the scraped area were visualized with a scanning electron microscope and chemical element changes were assessed using an energy dispersive X-ray spectrometry. Changes in the roughness of the scraped surface were evaluated by a three-dimensional surface profiling system. RESULTS: Metal transfer to alumina and Co-Cr heads began to be detectable at a 10~15 kg load, which could be exerted by one-handed force. At loads of 30, 50 kg, fissures occurred on the head surfaces in addition to metal transfer. CONCLUSION: This study reveals that metallic debris was transferred from the titanium alloy acetabular shell to both alumina and Co-Cr heads by minor scraping. When the contact force increased, scratching of the head surface occurred in addition to the transfer of metal. The results of this study suggest that the greatest possible effort should be made to protect femoral heads, regardless of material, from contact with metallic surfaces during total hip arthroplasty.
Acetabulum* ; Alloys ; Aluminum Oxide* ; Arthroplasty, Replacement, Hip ; Head* ; Spectrometry, X-Ray Emission ; Titanium

BACKGROUND: Although hepatitis B surface antigen (HBsAg) rapid test based on immunochromatographic assay (ICA) is now widely used, the test has not been evaluated sufficiently enough to validate its performance. Thus, it is important to summarize the clinical performance of the test kits. In this study, we performed meta-analysis for the performance of the HBsAg rapid tests. METHODS: PubMed database was searched using keywords about the accuracy of diagnostic tests for hepatitis B virus (HBV) infection. Two investigators assessed methodological quality utilizing standards for reporting of diagnostic accuracy studies (STARD) checklist. After performing a heterogeneity test, we obtained pooled sensitivity and specificity. Positive and negative predictive values (PPV and NPV) were simulated according to HBV prevalence. RESULTS: A total of 38 studies was selected from 10 papers. The quality scores ranged from 3 to 13 (median, 8). Kappa value was good (0.85). The performance of the 38 studies was heterogeneous. When 33 studies with better quality from 7 papers were re-selected, the pooled sensitivity and specificity were 98.07% (95% confidence interval, CI: 97.67-98.47%) and 99.56% (95% CI: 99.21-99.91%), respectively. With an HBV prevalence of 5%, PPV and NPV were predicted to be 92.14% and 99.90%, respectively. CONCLUSIONS: In view of high HBV prevalence in Korea, it is thought that the HBsAg rapid test can be used for HBV screening in small-sized laboratories or for epidemiologic studies. This study should be helpful in establishing a guideline for the proper performance evaluation of the HBsAg rapid tests.
Chromatography/methods ; Hepatitis B/*diagnosis ; Hepatitis B Surface Antigens/*blood ; Humans ; Sensitivity and Specificity ; Time Factors

Lipomas are the most common benign tumors of adipose tissue among adults. Lipomas can occur almost anywhere in the trunk, extremities, mediastinum, and pelvis, but retroperitoneal lipomas are extremely rare. It should be distinguished from well differentiated liposarcoma in order to provide the appropriate treatment and follow up. We experienced a case of 60-year-old patient with large retroperitoneal lipoma mimicking liposarcoma causing palpable abdominal mass and pain. Abdominal computerized tomography (CT) showed 33x22 cm sized bulky fat-containing mass with contrast enhanced solid portion in right retroperitoneum. Positron emission tomograpgy (PET) revealed increased 18F-FDG uptake at solid portion shown in abdominal CT. Imaging studies confirmed a high index of suspicion on liposarcoma. Laparotomy showed a large encapsulating tumor arising from retroperitoneum with fat necrosis. Pathologic examination of resected specimen revealed normal mature adipocytes without atypical cells, compatible with lipoma.
Fluorodeoxyglucose F18/diagnostic use ; Humans ; Lipoma/*diagnosis/pathology ; Liposarcoma/diagnosis ; Male ; Middle Aged ; Positron-Emission Tomography ; Retroperitoneal Neoplasms/*diagnosis/pathology ; Tomography, X-Ray Computed

Background: This study aimed to 1) assess the effect of total hip arthroplasty (THA) on coronal limb alignment, namely, the hip–knee–ankle angle (HKA), 2) identify factors that determine changes in the HKA, and 3) determine whether alignment changes influence the knee joint space width. Methods: We retrospectively evaluated 266 limbs of patients who underwent THA. Three types of prostheses with neck shaft angles (NSAs) of 132°, 135°, and 138° were used. Several radiographic parameters were measured in the preoperative and final radiographs (at least 5 years after THA). A paired t-test was used to confirm the effect of THA on HKA change.Multiple regression analysis was performed to identify radiographic parameters related to HKA changes following THA and changes in knee joint space width. Subgroup analyses were performed to reveal the effect of NSA change on the HKA change, and the proportion of total knee arthroplasty usage and changes in radiographic parameters between maintained joint space and narrowed joint space groups were compared. Results: The preoperative mean HKA was 1.4° varus and increased to 2.7° varus after THA.This change was related to changes in the NSA, lateral distal femoral angle, and femoral bowing angle. In particular, in the group with a decrease in NSA of > 5°, the preoperative mean HKA was largely changed from 1.4° varus to 4.6° varus after THA. The prostheses with NSA of 132° and 135° also led to greater varus HKA changes than those with an NSA of 138°. Narrowing of the medial knee joint space was related to changes in the varus direction of the HKA, decrease in NSA, increase in femoral offset. Conclusion A large reduction in NSA can lead to considerable varus limb alignment after THA, which can have adverse effects on the medial compartment of the ipsilateral knee.

BACKGROUND/OBJECTIVES: Benign prostatic hypertrophy (BPH) is a major cause of abnormal overgrowth of the prostate mainly in the elderly. Corni Fructus has been reported to be effective in the prevention and treatment of various diseases because of its strong antioxidant effect, but its efficacy against BPH is not yet known. This study was designed to evaluate the therapeutic efficacy of Corni Fructus water extract (CF) in testosterone-induced BPH rats. MATERIALS/METHODS: To induce BPH, rats were intraperitoneal injected with testosterone propionate (TP). Rats in the treatment group were orally administered with CF with TP injection, and finasteride, which is a selective inhibitor of 5α-reductase type 2, was used as a positive control. RESULTS: Our results showed that the increased prostate weight and histopathological changes in BPH model rats were suppressed by CF treatment. CF, similar to the finasteride-treated group, decreased the levels of testosterone and dihydrotestosterone by TP treatment in the serum, and it also reduced 5α-reductase expression and concentration in prostate tissue and serum, respectively. In addition, CF significantly blocked the expression of the androgen receptor (AR), AR co-activators, and proliferating cell nuclear antigen in BPH rats, and this blocking was associated with a decrease in prostate-specific antigen levels in serum and prostate tissue. CONCLUSIONS: These results suggest that CF may weaken the BPH status through the inactivation of at least 5α-reductase and AR activity and may be useful for the clinical treatment of BPH.
Aged ; Animals ; Antioxidants ; Cornus* ; Dihydrotestosterone ; Finasteride ; Humans ; Proliferating Cell Nuclear Antigen ; Prostate ; Prostate-Specific Antigen ; Prostatic Hyperplasia* ; Rats* ; Receptors, Androgen* ; Testosterone ; Testosterone Propionate ; Water