A notable secular trend in early puberty onset has been described over the past few decades. Also, the prevalence and incidence of precocious puberty is increasing not only in Korea, but also around the world. The manifestation of secondary sex characteristics before 8 years in girls and 9 years in boys is defined as precious puberty. The causes of precocious puberty can be classified as gonadotropin releasing hormone (GnRH)-dependent, also known as central precocious puberty (CPP), or GnRH-independent. Evaluation of patient with precocity requires detailed examination of the clinical manifestation, GnRH stimulation test, and imaging of the central nervous system if indicated. The standard treatment for CPP is GnRH agonist, which is beneficial for adequate pubertal development and preservation of final adult height. In this paper, we investigate the diagnosis and adequate treatment of CPP.

PURPOSE: Salvage operation is performed to improve the functional deficit of vascular access. This study is planned to evaluate the utility of the hybrid surgery through a comparative analysis between the results of surgical thrombectomy and those of hybrid surgery, combining surgical methods and endovascular treatments. METHODS: From January 2007 to December 2008, surgical thrombectomy had been done to 55 patients, whereas hybrid surgery had been done to 111 patients from January 2009 to December 2011. We have done a comparative analysis on the patency rate after the salvage operation for each group, retrospectively. Medical records were reviewed for patient information and radiographic data was used for checking the stenosis site in the hybrid surgery group. RESULTS: There were no statistically significant differences between the two groups, including age, gender, diabetes status, hypertension, and vascular access site or type. The primary patency rate was significantly higher in arteriovenous fistulas (65%) compared with arteriovenous grafts group (55%), at 12 months (P<0.01). At one year after the salvage operation, the secondary patency rate was higher in the hybrid surgery group compared to the surgical thrombectomy group (43.8% vs. 23.7%, P<0.01). CONCLUSION: This study shows that hybrid surgery combining surgical methods and endovascular treatments can be more useful for the salvaging of thrombosed vascular access than performing only surgical thrombectomy.
Arteriovenous Fistula ; Chimera ; Constriction, Pathologic ; Humans ; Hypertension ; Medical Records ; Retrospective Studies ; Thrombectomy ; Transplants

BACKGROUND: Rosacea treatments including oral/topical medications and laser therapy are numerous but unsatisfactory. OBJECTIVE: To compare the effectiveness of the dual wavelength long-pulsed 755-nm alexandrite/1,064-nm neodymium: yttrium-aluminum-garnet laser (LPAN) with that of 585-nm pulsed dye laser (PDL) for rosacea. METHODS: This was a randomized, single-blinded, comparative study. Full face received four consecutive monthly treatments with LPAN or PDL, followed-up for 6 months after the last treatment. Erythema index was measured by spectrophotometer, and digital photographs were evaluated by consultant dermatologists for physician's global assessment. Subjective satisfaction surveys and adverse effects were recorded. RESULTS: Forty-nine subjects with rosacea enrolled and 12 dropped out. There were no significant differences between LPAN and PDL in the mean reduction of the erythema index (p=0.812; 3.6% vs. 2.8%), improvement of physician's global assessment (p=1.000; 88.9% vs. 89.5%), and subject-rated treatment satisfaction (p=0.842; 77.8% vs. 84.2%). PDL showed more adverse effects including vesicles than LPAN (p=0.046; 26.3% vs. 0.0%). No other serious or permanent adverse events were observed in both treatments. CONCLUSION: Both LPAN and PDL may be effective and safe treatments for rosacea.
Consultants ; Erythema ; Humans ; Laser Therapy ; Lasers, Dye* ; Neodymium ; Prospective Studies* ; Rosacea*

In the originally published version of this article, the last line of footnotes was omitted in Table 2.

BACKGROUND: Nevus of Ota (NO) is a relatively common pigmentary disorder in Asians. Tanino's classification is an old but tacit consensus to delineate the disease. Various treatment options have been presented. However, a few studies have been conducted on available laser options and current treatment strategies or the classification of NO. OBJECTIVE: To investigate current laser options and their effectiveness for the treatment of NO, contributing factors to clinical outcomes, and verification of classification. METHODS: A retrospective study of NO was conducted by reviewing medical charts and photographs of sixty-seven patients. Statistical analysis was used to compare excellent and poor outcomes and determine contributing factors. RESULTS: The median age of onset was below the age of 1 (interquartile range [IQR], 0~1). Tanino's and PUMCH classification systems failed to classify patients in 24 (35.8%) and 6 (9.0%) of patients, respectively. A 1,064 nm Q-switched Nd:YAG laser without additional lasers was used most frequently in 42 patients (62.7%). The frequency of treatment was 19.0 (IQR, 10.0~23.0) in the cured group defined as subjects showing 95% improvement or above, compared to 10.0 (IQR, 6.25~13.75) in the unattained group defined as subjects showing less than 95% improvement (p=0.001). CONCLUSION: A 1,064 nm Q-switched Nd:YAG laser is a reliable treatment armamentarium, functioning as a single infallible modality as well as a combination treatment modality for NO. Repetitive laser treatments without interruption seems to be the most suitable in clearing NO. The current classification systems of NO are defective. Thus, a new classification should be developed.
Age of Onset ; Asian Continental Ancestry Group ; Classification* ; Consensus ; Humans ; Laser Therapy ; Nevus of Ota* ; Nevus* ; Pigmentation ; Retrospective Studies

No abstract available.
Dermatofibrosarcoma* ; Nose*

PURPOSE: Hypothermia at admission is associated with increased mortality and morbidity in preterm infants. We performed a quality improvement (QI) effort to determine the impact of a decrease in admission hypothermia in preterm infants. METHODS: The study enrolled very low birth weight (VLBW) infants born at Gangnam Severance Hospital between January 2013 and December 2016. This multidisciplinary QI effort included the use of occlusive wraps, warm blankets, and caps; the delivery room temperature was maintained above 23.0℃, and a check-list was used for feedback. RESULTS: Among 259 preterm infants, the incidence of hypothermia (defined as body temperature <36.0℃) decreased significantly from 68% to 41%, and the mean body temperature on neonatal intensive care unit admission increased significantly from 35.5℃ to 36.0℃. In subgroup analysis of VLBW infants, admission hypothermia and neonatal outcomes were compared between the pre-QI (n=55) and post-QI groups (n=75). Body temperature on admission increased significantly from 35.4℃ to 35.9℃ and the number of infants with hypothermia decreased significantly from 71% to 45%. There were no cases of neonatal hyperthermia. The incidence of pulmonary hemorrhage was significantly decreased (P=0.017). Interaction analysis showed that birth weight and gestational age were not correlated with hypothermia following implementation of the protocol. CONCLUSION: Our study demonstrated a significant reduction in admission hypothermia following the introduction of a standardized protocol in our QI effort. This resulted in an effective reduction in the incidence of massive pulmonary hemorrhage.
Birth Weight ; Body Temperature ; Delivery Rooms ; Fever ; Gestational Age ; Hemorrhage ; Humans ; Hypothermia* ; Incidence ; Infant ; Infant, Newborn ; Infant, Premature* ; Infant, Very Low Birth Weight ; Intensive Care, Neonatal ; Mortality ; Qi ; Quality Improvement*

Purpose: Metabolic syndrome (MetS) comprises a cluster of risk factors for future cardiovascular and metabolic diseases. Only a few recent studies have reported the trend in the prevalence of MetS in youth. This study aimed to analyze trends in the prevalence of MetS and nutrient intake in the last 10 years and investigate the changes in MetS components among Korean children and adolescents. Materials and Methods: We analyzed the data of 9513 children and adolescents aged 10–19 years from the 2008–2017 Korean National Health and Nutrition Examination Surveys. Diagnosis of MetS was based on the International Diabetes Federation (IDF) and modified National Cholesterol Education Program-Adult Treatment Panel III (NCEP-ATP III) criteria. Results: Based on the IDF criteria, MetS prevalence increased from 1.53% in 2008 to 3.19% in 2017 (p=0.007). Based on the NCEPATP III criteria, MetS prevalence increased from 2.18% in 2008 to 3.19% in 2017; however, the increase was not statistically significant. Daily calorie and fat intakes increased significantly during the study period. Among the risk factors that MetS comprises, the prevalence rates of central obesity, low high-density lipoprotein cholesterol levels, and high fasting glucose levels increased significantly. Conclusion Over the last 10 years, the prevalence of MetS has grown significantly with increasing calorie and fat intake in Korean children and adolescents. Central obesity and high-density lipoprotein cholesterol and fasting glucose levels have worsened.Therefore, active support and close monitoring are required to control MetS and prevent further increase in the prevalence of cardiovascular diseases.

BACKGROUND: There is substantial evidence that the vestibular system is involved in the regulation of blood pressure. Heart rate variability (HRV) is useful to investigate the role of the peripheral vestibular receptors and the baroreceptors in the orthostatic tolerance. METHODS: EKG was recorded during postural changes with the head up either after sinoaortic denervation or after bilateral labyrinthectomies in Sprague-Dawley rats. HRV, including mean, standard deviation, coefficient of variation (CV), and power spectrum, were analyzed from R-R intervals of EKG. RESULTS: Phenylephrine increased low frequency region and sodium nitroprusside increased high frequency region in the power spectral analysis of HRV in anesthetized rats. Postural changes decreased blood pressure transiently and then increased blood pressure gradually in control rats, but the depression of blood pressure induced by postural change was greater in rats with both sinoaortic denervation and bilateral labyrinthectomies. The increase of CV of HRV just after sinoaortic denervation or bilateral labyrinthectomies represents an unstable heart rate in resting position, however, CV of HRV was increased markedly by postural change 7 days after bilateral labyrinthectomies. Postural change with sinoaortic denervation increased low-frequency region representing sympathetic activity, whereas bilateral labyrinthectomies increased highfrequency region representing parasympathetic activity in power spectral analysis. CONCLUSIONS: These results suggest that both the peripheral vestibular receptors and the baroreceptors have subsidiary action in orthostatic tolerance and the peripheral vestibular receptors regulate blood pressure during postural change through the sympathetic nervous system.
Animals ; Blood Pressure ; Denervation ; Depression ; Electrocardiography ; Head ; Heart Rate* ; Heart* ; Nitroprusside ; Phenylephrine ; Pressoreceptors ; Rats* ; Rats, Sprague-Dawley ; Sympathetic Nervous System

Verruca plana is a subtype of warts, which are one of the most common dermatological diseases. A 37-year-old man presented with multiple asymptomatic skin-colored, 1∼2-mm, flat-topped papules on both arms, neck, and face. The patient had ulcerative colitis, which had been treated with immunosuppressants for 15 years. After skin biopsy, verruca plana was confirmed. The patient was treated with 5% imiquimod cream for 6 months. However, only mild improvement was observed. Acitretin was then added to the treatment regimen. After 44 weeks of treatment, acitretin was stopped. Dramatic and rapid clinical improvement was achieved after 3 weeks of treatment, and no sign of recurrence after treatment cessation has been reported for 60 weeks. Consequently, the combination of oral acitretin and topical 5% imiquimod cream should be recommended for the effective and safe treatment of recalcitrant verruca plana in immunosuppressed patients.
Acitretin* ; Adult ; Arm ; Biopsy ; Colitis, Ulcerative ; Humans ; Immunosuppressive Agents ; Neck ; Recurrence ; Skin ; Warts* ; Withholding Treatment