No abstract available.
Wilms Tumor*

Exploring the risk factors of adolescent suicide is important for effective suicide prevention. This study explored the clustering of adolescent suicides based on six risk factors: mental disorder, broken family, depression, anxiety, previous suicide attempts, and deviant behaviors. Using 173 student suicide reports obtained from the Ministry of Education, we evaluated the associations between suicide and variables related to mental disorders; dysfunctional family life; depression and anxiety; previous suicide attempts; deviant behaviors such as drinking and smoking; and school life characteristics, including attendance and discipline, problems within the past year, and incidents prior to suicide. In addition, reports of warning signs just before suicide were included in the analysis. The two-stage cluster analysis classified the students into three clusters: the silent type (cluster 1; 48.55%), in which no risk factors were observed; environmental-risk type (cluster 2: 24.28%), which featured a high frequency of broken households, deviant behaviors such as smoking/drinking and running away from home; and depressive type (cluster 3: 27.17%), which featured a high frequency of mental health problems such as depression, anxiety, and suicide attempts. Identifying the sub-types of adolescent suicide may help to inform tailored suicide prevention and intervention strategies in school.

A common goal in reconstructing the umbilicus is to achieve an aesthetically pleasing result. This single-subject study demonstrates the outcome of managing an umbilical keloid scar using a single excisional line. A patient presented with a large, oval keloid scar at the center of his abdomen. The scar, measuring 4×3 cm in diameter, was deformed to the extent that it completely obscured the umbilicus. The patient frequently experienced intermittent inflammation at the site of the scar. We planned a triangular incision around the keloid. The umbilical keloid was excised and reconstructed using a flap anchored along the lower edge of the triangle. The triangular flap was elevated and the deep dermis of its cephalic portion was attached to the linea alba. The remainder of the flap was sutured at the center to create a conical shape. Eleven months post-procedure, the umbilicus maintained an aesthetically pleasing appearance with proper depth, superior hooding, and a concave shape without protrusion. An advantage of this straightforward surgical method is that it allows for simultaneous resection and reconstruction without the need for additional flap design. This method is expected to be a useful option for reconstructing umbilical keloids the size of a fully developed umbilicus.

OBJECTIVE: The purpose of this study was to identify the regions of the brain associated with recurrent nocturnal chronic hypoxic episodes in patients with untreated obstructive sleep apnea syndrome (OSAS) using low-resolution electromagnetic tomography (LORETA) and quantitative electroencephalography (QEEG). METHODS: Nocturnal polysomnograph (NPSG) and subsequent morning electroencephalograph (EEG) were measured in 20 subjects with OSAS. Mild (n=10 ages 39.5+/-12.1 years) and severe (n=10 ages 41.7+/-13.6 years) right-handed male OSAS subjects were selected by interview and questionnaires including the NPSG, Beck Depression Inventory, Beck Anxiety Inventory, Epworth Sleepiness Scale, and Pittsburgh Sleep Quality Index. The LORETA and QEEG were compared between the severe and mild OSAS groups by frequency bands (delta 1-3 Hz, theta 4-7 Hz, alpha 8-12 Hz, beta1 13-18 Hz, beta2 19-21 Hz, beta3 22-30 Hz, and total 1-30 Hz) made by spectral analysis during resting with the eyes closed. RESULTS: The LORETA analysis showed decreased alpha activity at the right posterior cingulate gyrus (Brodmann area 23) in cases with severe OSAS compared to mild OSAS (p<0.05). For the QEEG, the absolute power of the alpha activity (8-12 Hz) was decreased in P3 (p=0.047), PZ (p=0.039) and O2 (p=0.04) in cases with severe OSAS compared to mild OSAS cases. The LORETA and QEEG analyses had similar results with regard to band, activation and location. CONCLUSION: The decreased activity of the alpha frequency in the right posterior cingulate gyrus, in patients with severe OSAS compared to those with mild OSAS, suggests that chronic repeated short-term hypoxia during sleep, in OSAS, could provoke cortical brain dysfunction associated with cognitive dysfunction such as memory and attention.
Anoxia ; Anxiety ; Brain ; Depression ; Electroencephalography ; Gyrus Cinguli ; Humans ; Hypoxia, Brain ; Magnets* ; Male ; Memory ; Surveys and Questionnaires ; Sleep Apnea, Obstructive*

No abstract available.
Histiocytosis, Langerhans-Cell*

OBJECTIVE: The aim of this study was to evaluate the remineralization of interdentally stripped teeth after fluoride gel or hydroxyapatite paste application. METHODS: After interdental stripping, 1.23% fluoride gel or 10% hydroxyapatite paste was applied three times a day, with a duration of four minutes, for a week. Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) were used to compare the change of surface contents and crystal structures before and after the application of fluoride gel or hydroxyapatite paste. RESULTS: EDS analysis indicated that calcium contents were increased after 10% HAp paste application on stripped enamel (p < 0.01). SEM view showed that enamel surfaces in groups of 1.23% APF gel or 10% HAp paste application were smoother than those of control group, which was regarded as filling of the pore structure. And pores between crystal structures in groups treated with 1.23% APF gel or 10% HAp paste were smaller than those of control group. CONCLUSIONS: Application of APF or HAp on stripped enamel could positively influence on the surface contents or crystal structure.
Calcium ; Dental Enamel ; Durapatite ; Fluorides ; Microscopy, Electron, Scanning ; Spectrometry, X-Ray Emission ; Tooth

Purpose: Elderly people are particularly susceptible to burn injuries due to physiological and anatomical aging processes. As the elderly population is expected to grow, the number of burn injuries among this group is also likely to increase. Researchers and health professionals must analyze the causes of geriatric burn injuries, establish targeted preventive policies, and provide education on strategies to minimize burns. Methods: To understand the epidemiological causes of burns in the elderly, we retrospectively reviewed the medical records of patients admitted to our burn center in Korea between January 2019 and December 2021. Of 1,082 patients admitted with burn injuries, 323 (29.9%) were aged 65 years or older and were included in further examination. Results: The elderly patients included more women (64.1%) than men (35.9%), and the causes of burns differed according to gender. Flame burns were more common among men than women, and only men experienced electrical burns. Most older people live alone (54%); accordingly, the most common place of injury for these patients was home (77%), followed by the workplace (14%), with the causes of burns differing between those locations. Sixteen patients (4.9%) started medical treatment at least 2 weeks post-injury, while 29 patients (8.9%) began burn treatment after 1 month. Scalding (55.4%) was the most common cause of burn injury. Most injuries were deep second-(35%) or third-(39%) degree burns, and the most common treatment method was surgery (64.7%). The most frequently affected areas were the legs (24%) and feet (23%). Conclusion Through this analysis of the clinical profile of burns in the elderly, we endeavored to help establish suitable preventive policies.

A 26-year-old male patient presented for stump revision of an amputated right 3rd finger and neurorrhaphy for a lacerated right 2nd finger. An axillary brachial plexus block was performed using the transarterial technique. Postoperatively, the patient demonstrated signs and symptoms of brachial plexus injury. He exhibited paresthesia in the distribution of the ulnar nerve and motor weaknesses the wrist, elbow, and shoulder. On the 18th postoperative day, nerve conduction and electromyographic studies were performed, which revealed possible right radial neuropathy and axillary neuropathy, or right brachial plexopathy with posterior cord involvement. After seven months of medical and physical treatment, the pain subsided but slight paresthesia and muscle weaknesses still remained. We describe a case of postoperative neuropathy, which is believed to be caused by a direct nerve injury after an axillary brachial plexus block with persistent signs and symptoms over a considerable period.
Adult ; Brachial Plexus Neuropathies ; Brachial Plexus* ; Elbow ; Fingers ; Humans ; Male ; Muscle Weakness ; Neural Conduction ; Paresthesia ; Radial Neuropathy ; Shoulder ; Ulnar Nerve ; Wrist

No abstract available.

The present study compared the actigraphic indices between both wrist actigraphies (WATGs), and the sleep estimates between each WATG and nocturnal polysomnography (NPSG) to assess their differences and consistencies. We studied 22 right-handed subjects (mean age 43.9+/-13.3 years, M:F=14:8) with untreated primary sleep disorders (primary insomnia=8, simple snorer=2, obstructive sleep apnea=12) undergone by overnight both WATGs and NPSG, simultaneously. Comparison and correlation were analyzed between right and left wrist actigraphic data. In the sleep estimates of both WATGs and NPSG, each WATG was compared and correlated with NPSG in sleep period time (SPT), total sleep time (TST), sleep latency (SL), sleep efficiency (SE) and wake time (WT). Sleep indices between both WATGs showed significant positive correlations with no correlations in SL and fragmentation index (FI). There were no differences in sleep indices between both WATGs. SPTs of both WATGs, SL of left WATG, and TST of right WATG showed positively significant correlations, and SE of right WATG did negatively significant correlation in sleep indices between each WATG and NPSG. As each WATG was compared to PSG, SPTs of both WATGs and WT of right WATG were decreased, and TST and SE of right WATG and SL of left WATG were increased. Inconsistent SL and FI between both WATGs indicate that the activities between both WATGs can differentially happen during wake or arousal. Inconsistent sleep estimates between each WATG and NPSG may indicate the limited usefulness in measuring and analyzing one-night sleep by using WATG.
Arousal ; Functional Laterality ; Polysomnography* ; Sleep Wake Disorders ; Wrist*