No abstract available.
Nasal Polyps*

When clinicians faced with an insufficient volume of supporting bone on ideally esthetic and biomechanical position for dental implantation, guided bone regeneration(GBR) was indicated. Although GBR has wide application at clinic, proper time of membrane removal remains qustionable in using non-resorbable membrane, such as non-expanded polytetrafluoroethylene(PTFE). The aim of this study was to compare the effect of maintenance period of PTFE membrane on bone regeneration in rabbit calvarial defects. Eight adult New Zealand white female rabbits were used in this study. Four defects were surgically made in their calvaria. Using a trephine bur, 4 'through and through' defects were created and classified into 3 groups, which were consisted of control group(no graft), experimental group 1(autogenous bone)and experimental group 2(deproteinized bovine bone; OCS-B(R)). The defects were covered with PTFE membrane(Cytoplast(R)). Membranes were removed after 1, 2, 4 and 8 weeks post-GBR procedure in 2 rabbits repectively. All rabbits were sacrificed after 8 week post-GBR procedure. Specimens were harvested and observed histologically. The results were as follow; 1) The use of graft material and membrane was necessary in GBR procedure. 2) When PTFE membranes were removed early, the most favorable bone regeneration was revealed in experimental group I, followed by experimental group II and control group. 3) On GBR, it is recommended that membrane should maintain for 4 weeks with autogenous graft. As well, the use of xenograft need longer maintenance period than autogenous bone. Further evaluations will be needed, such as histomorphologic research, more species and different kinds of graft materials. And on the basis of these studies, clinical researches would be required.
Adult ; Bone Regeneration* ; Dental Implantation ; Dental Implants ; Female ; Heterografts ; Humans ; Membranes* ; New Zealand ; Polytetrafluoroethylene ; Rabbits ; Skull ; Transplants

Wernicke's encephalopathy is a reversible but potentially critical disease caused by thiamine deficiency. Most patients complain of symptoms such as ophthalmoplegia, ataxia and confusion. Heavy alcohol drinking is commonly associated with the disease, but other clinical conditions also can provoke it. In pregnant women, hyperemesis gravidarum can lead to the depletion of body thiamine due to poor oral intake and a high metabolic demand. We report a case of Wernicke's encephalopathy following hyperemesis gravidarum in a 36-year-old female at 20 weeks of pregnancy, who visited our hospital because of shock with vaginal bleeding. This case suggests that although the initial presentation may include atypical symptoms (e.g., shock or bleeding), Wernicke's encephalopathy should be considered, and thiamine replacement should be performed in pregnant women with neurologic symptoms and poor oral intake.
Acute Kidney Injury ; Adult ; Alcohol Drinking ; Ataxia ; Female ; Humans ; Hyperemesis Gravidarum* ; Neurologic Manifestations ; Ophthalmoplegia ; Pregnancy ; Pregnant Women ; Shock ; Thiamine ; Thiamine Deficiency ; Uterine Hemorrhage ; Wernicke Encephalopathy*

PURPOSE: The circular stapled hemorrhoidectomy established by A. Longo involves reducing the mucous membrane prolapse and blocking the end branches of the upper hemorrhoidal artery through transverse incision of a suitable section of the mucosa between the rectum and the anal canal. This study was undertaken to determine the efficacy and the safety of a circular stapled hemorrhoidectomy by comparing it with a conventional Milligan-Morgan hemorrhoidectomy. METHODS: One hundred thirty (130) patients with prolapsed hemorrhoids underwent surgical treatment with either a conventional (n=66)(conventional group) or a circular stapled (n=64) (stapled group) hemorrhoidectomy. The operation time was recorded, and the resected specimen was examined. The patients assessed their postoperative pain. Time to first bowel movement, hospital stay, and postoperative complications were analyzed. All patients received follow-up examinations at the out-patient clinic, and the time to return to work and the degree of their satisfaction were checked. RESULTS: The stapled group had a shorter average operation time (19.2 min. vs 26.1 min., P=0.016). The postoperative pain score in the stapled group was significantly lower than it was in the conventional group (P<0.05). Time to first bowel movement and hospital stay were not significantly different between the groups. Return to work was significantly faster in the stapled group (6.5 days vs 15.8 days, P<0.05). The degrees of satisfaction for the two groups were similar, and postoperative complications in the two groups were both similar and acceptable (6.1% vs 11.0%, P>0.05). CONCLUSIONS: A circular stapled hemorrhoidectomy offers a significantly less painful alternative to the conventional technique and is associated with an earlier return to normal activity. However, the long-term outcome needs to be evaluated further.
Anal Canal ; Arteries ; Follow-Up Studies ; Hemorrhoidectomy* ; Hemorrhoids ; Humans ; Length of Stay ; Mucous Membrane ; Outpatients ; Pain, Postoperative ; Postoperative Complications ; Prolapse ; Rectum ; Return to Work

Background: Although the scallop sign is considered the most important risk factor for extensor tendon ruptures (ETRs) in patients with osteoarthritis of the distal radioulnar joint (DRUJ), previous reports provide a limited understanding of the changes at DRUJ, as risk factors were examined in plain radiographs of the wrist. The aim of this study was to assess the changes of DRUJ using axial images of computed tomography (CT) in patients with DRUJ osteoarthritis and associated ETRs and to evaluate the relationship between the changes of DRUJ and ETRs. Methods: Twelve patients with ETRs due to osteoarthritis of the DRUJ were enrolled. The changes of DRUJ were examined on axial images of CT and the following 8 parameters were measured: width of radius, anteroposterior (AP) length of radius, width of sigmoid notch (SN), AP length of SN, AP length of ulnar head, subluxation length of ulnar head, dorsal inclination of SN, and distance from Lister’s tubercle to SN. Radiological parameters of the DRUJ were measured in 60 control wrists without trauma or osteoarthritis, and the patient and control groups were statistically compared. Results: Statistically significant differences were observed between the patient and control groups in all the radiological parameters except for the AP length of SN and AP length of ulnar head. The width of radius, AP length of radius, width of SN, subluxation length of ulnar head, and dorsal inclination of SN were greater and the distance from Lister’s tubercle to SN was smaller in the patient group than in the control group. The width of SN, dorsal inclination of SN, and distance from Lister’s tubercle to SN were statistically significant risk factors among the 8 parameters. Conclusions ETRs due to osteoarthritis of the DRUJ was related to the changes of DRUJ, especially the changes around SN of the distal radius. In addition to the existing risk factors, a decreased distance from Lister’s tubercle to SN and increased dorsal inclination of SN were identified as new risk factors. Axial images of CT were effective to evaluate degenerative changes at the DRUJ.

Purpose: Septic arthritis of the knee is an orthopedic emergency that requires early diagnosis and surgical treatment. This study examined the effectiveness of drain insertion and irrigation in the treatment of septic arthritis of the knee under local anesthesia. Materials and Methods: A retrospective study was conducted on nine cases (eight patients) diagnosed with septic arthritis of the knee from September 2017 to February 2020 and treated with drain insertion and irrigation under local anesthesia. After penetrating through the superolateral portal to the superomedial portal and inserting the drain, daily irrigation of approximately 3 L of normal saline was done. The following were investigated: age, sex, underlying disease, cause, degree of osteoarthritis, time from diagnosis to surgery, duration of hospitalization, duration of normalization of C-reactive protein, and smear and culture. Results: The initial white blood cell count of joint fluid was 71,472±51,667/mm3 (32,400–203,904/mm3 ), and polymorphic leukocytes were 91.1%±2.6% (86%–95%). The average time from diagnosis to surgery was 8.3±1.3 hours (6–10 hours), and the irrigation period was 8.2±3.2 days (4–15 days). The average length of hospitalization was 20.8±8.7 days (9–37 days). There was no reoperation or recurrence. Smear and culture tests were not identified. Conclusion In the treatment of septic arthritis of the knee, the insertion of a drain tube and irrigation under local anesthesia is a relatively fast and simple method to reduce pain by repetitive draining of purulent joint fluid and can be used as an alternative treatment for patients with a risk of general or spinal anesthesia.

PURPOSE: To evaluate whether the Breast Imaging Reporting and Data System (BI-RADS) MRI lexicon could reflect the genomic information of breast cancers and to suggest intuitive imaging features as biomarkers. METHODS: Matched breast MRI data from The Cancer Imaging Archive and gene expression profile from The Cancer Genome Atlas of 70 invasive breast cancers were analyzed. Magnetic resonance images were reviewed according to the BI-RADS MRI lexicon of mass morphology. The cancers were divided into 2 groups of gene clustering by gene set enrichment an alysis. Clinicopathologic and imaging characteristics were compared between the 2 groups. RESULTS: The luminal subtype was predominant in the group 1 gene set and the triple-negative subtype was predominant in the group 2 gene set (55 of 56, 98.2% vs. 9 of 14, 64.3%). Internal enhancement descriptors were different between the 2 groups; heterogeneity was most frequent in group 1 (27 of 56, 48.2%) and rim enhancement was dominant in group 2 (10 of 14, 71.4%). In group 1, the gene sets related to mammary gland development were overexpressed whereas the gene sets related to mitotic cell division were overexpressed in group 2. CONCLUSION: We identified intuitive imaging features of breast MRI associated with distinct gene expression profiles using the standard imaging variables of BI-RADS. The internal enhancement pattern on MRI might reflect specific gene expression profiles of breast cancers, which can be recognized by visual distinction.

OBJECTIVE: Endocervical infection of Chlamydia trachomatis is one of the most common sexually transmitted diseases(STD) in women, and it usually disseminates into the upper genital tract, especially at the uterine exploration. This study was performed to investigate the prevalence rate of endocervical Chlamydia trachomatis in infertile women with the application of polymerase chain reaction(PCR) for the detection of Chlamydia trachomatis DNA. METHODS: From March, 1996 to October, 1999, endocervical swabs were obtained in 101 infertile patients at SNUH. Chlamydia trachomatis DNA was extracted and amplified by a commercially available Amplicor Chlamydia trachomatis PCR kit(Roche Diagnostics, Branch burg, USA). The clinical characteristics of infertile patients were reviewed and analyzed. RESULTS: The mean age was 31.0 years old, and the mean duration of infertility was 43.4 months. The prevalence rate of endocervical Chlamydia trachomatis in infertile patients was 4.0%(4/101). There was no significant difference in the prevalence rate of Chlamydia trachomatis infection among the different infertility factor groups: 7.1%(2/28) in tubal-peritoneal factor group, 8.3%(1/12) in cervical factor group, and 8.3%(1/12) in unexplained infertility group. Two patients suffered from chronic cervicitis. CONCLUSION: The application of PCR for the detection of Chlamydia trachomatis DNA was a rather rapid and accurate diagnostic method. Therefore, it could be recommended as a diagnostic test applicable to the routine infertility work-up.
Chlamydia Infections* ; Chlamydia trachomatis* ; Chlamydia* ; Diagnostic Tests, Routine ; DNA* ; Female ; Humans ; Infertility ; Polymerase Chain Reaction* ; Prevalence* ; Uterine Cervicitis

OBJECTIVE: To evaluate the maternal and fetal outcomes after transvaginal selective fetal reduction(SFR) in multifetal pregnancy. MATERIALS AND METHODS: Transvaginal SFR using fetal intracardiac puncture with KCl injection and aspiration of amniotic fluid was performed in 58 multifetal pregnancies achieved after assisted reproductive technology(ART). After transvaginal SFR, 55 twin and 3 singleton pregnancies were evaluated and analyzed retrospectively with the medical records of mothers and babies. RESULTS: Of 58 cases, abortion within 4 weeks after SFR occurred in 1 case(1.7%). Miscarriage of all fetuses occurred in 8 cases(13.8%) from 4 weeks after SFR until 24 weeks of gestation. Perinatal death occurred in 8 newborns from 5 mothers due to extreme prematurity in 7 cases and anencephaly in 1 case. Take-home baby rate, that is, discharge with at least 1 healthy baby, was 77.6%(45/58). CONCLUSION: Transvaginal SFR is an acceptable and effective management option in the cases of excessive multifetal pregnancy after infertility treatment. The ultimate successful outcomes of reduced multifetal pregnancy may be enhanced by more extensive experience with SFR.
Abortion, Spontaneous ; Amniotic Fluid ; Anencephaly ; Female ; Fetus ; Humans ; Infant, Newborn ; Infertility ; Medical Records ; Mothers ; Pregnancy ; Pregnancy Outcome* ; Pregnancy Reduction, Multifetal* ; Pregnancy* ; Punctures ; Retrospective Studies

OBJECTIVE: To investigate the clinical significance of endometrial thickness and pattan as a predictor of successful implantation of embryos in ovum donation and cryopreserved-thawed embryo transfer program. METHODS: From January, 1996 to March, 1998, 31 cycles of ovum donation and 31 cycles of cryopreserved-thawed embryo transfer were enrolled in this prospective study. Endometrial thickness was measured three times: prior to progesterone administration (P), 1 day and 3 days after P. In cryopreserved-thawed embryo transfer cycles, the measurement at 1 day after P was omitted. Endometrial pattern was observed prior to progesterone, and was considered meaningful when a multi-layered triple-line was seen with prominent outer and central hyperchogenic lines and inner hypoechogenic regions. RESULTS: There were no differences in embryo quality, dose or duration of estrogen, and endometrial thickness or pattern between conception and non-conception cycles in both ovum donation and cryapreserved-thawed embryo transfer pmgram. In ovum donation cycles, no cortelation was observed between estrogen dose and endometrial thickness or pattern. In cryopreserved-thawed embryo transfer cycles, total estrogen dose and endometral thickness at 3 days after P has a inverse correlation, and estrogen dose over 4.3 mg per day can predict expression of a multi-layered triple-line pattern, CONCLUSION: Endometrial thickness or pattern. cannot predict a successful implantaion of embryos in both ovum donation and cryopreserved-thawed embryo transfer cycles.
Embryo Transfer* ; Embryonic Structures* ; Estrogens ; Fertilization ; Oocyte Donation* ; Ovum* ; Progesterone ; Prospective Studies