No abstract available.
Vascular Endothelial Growth Factor A*

No abstract available.
Endometrial Neoplasms* ; Female

PURPOSE: Tc-99m-MIBI (MIBI) and Tc-99m-Tetrofosmin (TF) are commonly used for scintimammography (SMM). We compared the diagnostic ability of SMM using Tc-99m-MIBI and Tc-99m-TF for the differential diagnosis of breast mass. MATERIALS AND METHODS: The study subjects were comprised of 123 breast lesions and 86 normal breasts of 114 patients who underwent SMM. Bilateral prone images and anterior supine images were obtained at 5 minutes and 1 or 3 hours after intravenous injection of 740 MBq of either MIBI or TF. Sizes of tumors were not significantly different between the MIBI and TF groups. First, two observers independently read the SMM without clinical information (1st interpretation), then read again with information about mass location (2nd interpretation). Sensitivity and specificity of each radiopharmaceutical for the diagnosis of breast cancer were evaluated in terms of image acquisition time, tumor size, and location. RESULTS: The SMM showed a good agreement between two observers for 1st and 2nd interpretation, except for TF SMM at 3 hr. For the first interpretation, the sensitivities at 5 min, 1 hr, and 3 hr were not significantly different between MIBI and TF SMM (81.6%, 80.0%, 60.9% in MIBI vs. 88.9%, 80.6%, 42.9% in TF), although the senstivities of 3 hr images were significantly lower than 5 min images in both MIBI and TF SMM. The specificity of TF at 5 min was superior to that of MIBI (81.5%, 90.0%, 82.9% in MIBI vs. 96.7%, 100%, 90.0% in TF, p<0.01 MIBI vs. TF at 5 min). For the second interpretation with information of mass location, the sensitivities at 3 hr images were significantly lower than 5 min images (86.8%, 86.7%, 78.3% in MIBI vs. 88.9%, 93.5%, 57.1% in TF) between MIBI and TF SMM. However, there was no significant difference in the specificity (60.0%, 53.8%, 75.0% for MIBI vs. 86.7%, 100%, 100% for TF). MIBI and TF SMM showed lower sensitivities for the tumors with less than 1 cm than tumors with more than 1 cm. However, the location of tumors did not influence the sensitivity and specificity between MIBI and TF SMM. CONCLUSION: The ability for the differential diagnosis of breast tumor is similar between MIBI and TF SMM, and delayed image is not necessary. TF may be better than MIBI considering the specificity of SMM without clinical information and labeling convenience.
Breast Neoplasms ; Breast* ; Diagnosis ; Diagnosis, Differential* ; Humans ; Injections, Intravenous ; Sensitivity and Specificity

Purpose: Driveline infection (DLI) is one of the major adverse events of Left Ventricular Assist Device (LVAD). The purpose of this study was to explore the incidence of DLI according to the driveline dressing methods. Methods: This study was a retrospective cohort study that investigated the medical records of 75 patients who implanted LVAD from January 2015 to December 2020 at a hospital in Seoul, Korea. Traditionally, sandwich dressing method was applied until October 2019, after which newly winded dressing method was adopted for driveline dressing to LVAD patients. The outcome variables were compared between sandwich dressing method applied group (n=41) and winded dressing method applied group (n=34). The follow-up period for DLI was 1 year. Results: When compared participants’ characteristics, there was no difference between the two groups, except the type of LVAD device. The incidence of DLI was 17.1% in sandwich dressing group, while no infection was found in winded dressing group (p=.011). Conclusion Although there were difference in the LVAD devices, it is considered that winded dressing contributed to the reduction of DLI. Further research on standardized dressing methods was required for DLI prevention in Korea.

PURPOSE: The purpose of this research was to explore the cyber world immersion experience of adolescents. METHOD: Multiple strategies for data collecting were used: an in depth face-to-face interview; analysis of adolescent` writings; and analysis of examples of phenomenon in the realistic world. The sample group consisted of 10 adolescents. RESULT: Although the experience was different for all adolescent interviewed, the essential themes of experience emerged: "fill up", "homoeologous feeling", "the older generation has a conflicting negative opinion", "change in social character", "become habitually skeptic", "have bad health", "mean of superiority and getting everything solved", "ease of access", "monetary benefit", "addiction to the computer", "forget real life solved stress", "do harm to society", "take comfort", or "new job". CONCLUSION: Accordingly this paper suggests that contact with various software is necessary in adolescents, and good quality contents function to prepare and activate adolescents to apply the internet for good use.
Adolescent ; *Adolescent Psychology ; Adult ; *Attitude to Computers ; Humans ; *Internet ; Male

PURPOSE AND METHODS: Urinary tract infection(UTI) is one of the most important diseases of childhood, especially for young infants. To characterize the patients diagnosed with febrile UTI in their first 6 months of life and to explore the risk factors of recurrent UTI, a retrospective study was performed. RESULTS: Among the 90 patients studied, 77 were boys(86%). First episodes of UTI were diagnosed at the age of 2.5+/-1.4 months. These patients underwent ultrasonographic evaluation of urinary tract(n=90) and voiding cystourethrography(n=81) where 53 and 35 studies showed abnormal findings respectively, and a total of 45 cases of urinary tract anomaly including vesicoureteral reflux(VUR, n=35) were diagnosed. Normal findings on ultrasonography indicated decreased risk of VUR in boys of 1-3 months of age(n=30). 53 patients were followed up more than 6 months and 45 episodes of subsequent UTI developed in 29 patients during the first 6-month period. Patients with relapse were older than patients without relapse at the diagnosis of first UTI, but other clinical parameters including abnormal findings on the imaging studies and prophylactic antibiotics prescription were not different between the two groups. CONCLUSION: UTI in early infancy occurred mainly in male infants and half of the patients had structural anomalies. USG was of clinical value in detecting anomalies requiring surgical intervention, and to rule out high grade VUR in 1-3 months old boys. Results of the imaging study or prophylactic antibiotics could not modify the risk of recurrent UTI.
Anti-Bacterial Agents ; Diagnosis ; Humans ; Infant ; Male ; Prescriptions ; Recurrence* ; Retrospective Studies ; Risk Factors* ; Ultrasonography ; Urinary Tract Infections* ; Urinary Tract*

No abstract available.
Amniocentesis* ; Cytogenetics*

Purpose: This article was to collect data on the safety of coronavirus disease 2019 (COVID-19) vaccines in children with underlying medical conditions. Methods: We constructed a prospective cohort of children and adolescents aged 5 to 19 years who had received at least one dose of COVID-19 vaccine. Patients diagnosed with and treated for chronic kidney disease, autoimmune disease, or other chronic conditions at the Seoul National University Children’s Hospital were recruited from June to December 2022. A mobile survey questionnaire was sent to their guardians. The presence of adverse events on the day (day 0), 3 weeks (day 21), and 6 months (day 180) after the 1st dose of COVID-19 vaccine was recorded by the guardians. Results: A total of 73 children participated. The median age was 14 years, and 64.4% of the patients were male. On the day of immunization, 65.8% of the patients reported at least one adverse event. Pain at the injection site, fatigue, headache, arthralgia, and myalgia were the most common symptoms. The prevalence of adverse events decreased over time (65.8% on day 0, 27.4% between days 0 and 21, and 24.6% between days 21 and 180). Severe acute respiratory syndrome coronavirus 2 infection after the 1st dose occurred in 17 patients (23.3%) and one of the patients (5.88%) was hospitalized due to infection. Conclusions Adverse events after COVID-19 vaccination were generally mild in children and adolescents with underlying medical conditions. Our findings provide evidence for the safety of COVID-19 vaccination in the vulnerable pediatric population.

Multiple sclerosis is an autoimmune disorder, which may be associated with other rheumatologic or endocrine diseases induced by autoantibodies. Hashimoto's thyroiditis is also an organ-specific autoimmune disorder, and its association with multiple sclerosis during interferon therapy has been reported. Cases of Hashimoto's thyroiditis with multiple sclerosis are very rare. Herein is reported our experience of a 27 year-old woman who presented with general weakness, cold intolerance and progressive muscle weakness. She had been treated with levothyroxine due to subclinical hypothyroidism, which rather aggravated the symptom. In a CSF analysis, the myelin basic protein level was above 10 ng/dL and that of the IgG and the IgG index were 135 mg/dL and 7.8, respectively. In a brain MRI, demyelinating lesions in the left middle pontocerebellar junction and right subcortex were shown. She was diagnosed with multiple sclerosis, and the symptom improved after glucocorticoid and levothyroxine therapy. Herein is reported the first Korean case of Hashimoto's thyroiditis associated with multiple sclerosis
Adult ; Autoantibodies ; Brain ; Endocrine System Diseases ; Female ; Humans ; Hypothyroidism ; Immunoglobulin G ; Interferons ; Magnetic Resonance Imaging ; Multiple Sclerosis* ; Muscle Weakness ; Myelin Basic Protein ; Thyroid Gland* ; Thyroiditis* ; Thyroxine

Multiple sclerosis is an autoimmune disorder, which may be associated with other rheumatologic or endocrine diseases induced by autoantibodies. Hashimoto's thyroiditis is also an organ-specific autoimmune disorder, and its association with multiple sclerosis during interferon therapy has been reported. Cases of Hashimoto's thyroiditis with multiple sclerosis are very rare. Herein is reported our experience of a 27 year-old woman who presented with general weakness, cold intolerance and progressive muscle weakness. She had been treated with levothyroxine due to subclinical hypothyroidism, which rather aggravated the symptom. In a CSF analysis, the myelin basic protein level was above 10 ng/dL and that of the IgG and the IgG index were 135 mg/dL and 7.8, respectively. In a brain MRI, demyelinating lesions in the left middle pontocerebellar junction and right subcortex were shown. She was diagnosed with multiple sclerosis, and the symptom improved after glucocorticoid and levothyroxine therapy. Herein is reported the first Korean case of Hashimoto's thyroiditis associated with multiple sclerosis
Adult ; Autoantibodies ; Brain ; Endocrine System Diseases ; Female ; Humans ; Hypothyroidism ; Immunoglobulin G ; Interferons ; Magnetic Resonance Imaging ; Multiple Sclerosis* ; Muscle Weakness ; Myelin Basic Protein ; Thyroid Gland* ; Thyroiditis* ; Thyroxine