• Journal of the korean academy of Pediatric Dentistry
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• v.25 no.1
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• pp.225-233
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• 1998

The purpose of this study was to determine the thickness of the cortical bone at the mandibular angle in children and adolescents. The subjects were composed of 153 subjects who were 3 to 17 years of age that had not been history of bone disease or metabolic disease and no dental caries or tooth loss on mandibular molars. The subjects were divided into three age groups, group I (preschool children) was 3 to 5 years of age and grouop II (school children) was 6 to 11 years of age and group III (adolescence) was 12 to 17 years of age. Panoramic radiographs of these patients were collected and measurements of the thickness of the cortical bone were obtained at the mandibular angle. The average thickness of the cortical bone in the group I was 1.01$\pm$0.18 mm in boys and 1.07$\pm$0.22 mm in girls. In the group II was 1.23$\pm$0.18 mm in boys and 1.32$\pm$0.18 mm in girls. In the group III was 1.60$\pm$0.23 mm in boys and 1.58$\pm$0.20 mm in girls. Statistical analyses did not reveal any significant difference between the right or left side of the mandible but difference was exist between the same age groups by sex, especially in group II (p<0.01), except in group III. The greater thickness of cortical bone in the older age group was shown to be statistically significant. The correlation coefficient between age and the thickness of the cortical bone at the mandibular angle showed a high value of r=0.76.

• Advances in pediatric surgery
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• v.7 no.1
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• pp.42-45
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• 2001

The major complications of Meckel's diverticulum (MD) are bleeding, intestinal obstruction, infection, umbilical fistula and perforation. Although the relative incidences vary between authors, bleeding is the most common complication in children. The aim of our study is to show the symptomatic guideline for the diagnosis of the bleeding MD. Eight cases with bleeding MD which were operated upon at the department of Pediatric Surgery, Yeungnam University Hospital from April 1985 to April 2001 were reviewed. Half of the patients were under 2 years of age and all patient s we re male. All patients were preoperatively diagnosed by previous history of intestinal bleeding (melena, hematochezia) and 99mTc pertechnetate MD scan. Segmental resection and end-to-end anastomosis was performed in 6 patients and diverticulectomy in 2 patients. Heterotropic gastric mucosa was found in 6 patients. Postoperative complication was not observed in any cases. In conclusion, in any male children with obscure intestinal bleeding, especially less than 2 years of age, bleeding MD must be suspected. It seems to us that 99mTc pertechnetate MD scan is a useful tool to diagnose bleeding MD.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.21 no.3
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• pp.184-188
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• 2018

Purpose: Despite the increasing incidence of pediatric Crohn disease (CD) in Korea, data on the characteristics of perianal lesions are scarce. Therefore, we aimed to investigate the characteristics of pediatric CD with accompanying perianal lesions in Korea. Methods: We retrospectively reviewed the medical records of children (age ${\leq}18$ years) with confirmed CD at Gachon University Gil Medical Center between 2000 and 2014. Patients were classified into two groups based on the presence or absence of any perianal lesions including skin tags. Additional analysis was performed according to the presence or absence of perianal perforating lesions. Results: Among the 69 CD children (mean age, 15.4 years) include in the analysis, 54 (78.3%) had a perianal lesion and 29 (42.0%) had a perianal perforating lesion. The median duration of chief complaints was longer in pediatric CD with any accompanying perianal lesions (5.40 months vs. 1.89 months, p=0.02), while there was no difference between pediatric CD with and without perianal perforating lesions (5.48 months vs. 4.02 months, p=0.18). Perianal symptoms preceded gastrointestinal symptoms in 13 of 29 (44.8%) patients with perianal perforating lesions. Conclusions: CD should be suspected in children with perianal lesions, even in circumstances when gastrointestinal symptoms are absent.

• Journal of Trauma and Injury
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• v.36 no.3
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• pp.242-248
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• 2023

Purpose: Blunt pancreatic trauma in pediatric patients is relatively rare, yet it is associated with high risks of morbidity and mortality This study aimed to review pediatric patients with blunt pancreatic trauma treated at a single center and provide treatment guidelines. Methods: This study included patients under the age of 18 years who visited our center's pediatric emergency department and were diagnosed with pancreatic injury due to abdominal trauma via radiological examination between January 2007 and December 2022. Patients' medical records were retrospectively reviewed and analyzed. Results: Among 107 patients with abdominal trauma, 14 had pancreatic injury, with a median age of 8.2 years (interquartile range, 3.1-12.3 years). Eight patients were male and six were female. The most common mechanism of injury was falls from a height and bicycle handlebars (four cases each). Six patients had associated injuries. Two patients had American Association for the Surgery of Trauma grade I or II, eight had grade III, and four had grade IV or V injuries. Eight patients underwent surgical resection, and four were discharged with only an intervention for duct injuries. Conclusions: Patients with blunt pancreatic trauma at our center have been successfully treated with surgical modalities, and more recently through nonsurgical approaches involving active endoscopic and radiologic interventions.

• Clinical and Experimental Pediatrics
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• v.54 no.4
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• pp.141-145
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• 2011

Pertussis is an acute respiratory infection characterized by paroxysmal cough and inspiratory whoop for over 2 weeks. The incidence of pertussis has decreased markedly after the introduction of DTwP/DTaP vaccine, but the incidence of pertussis has increased steadily among young infant and among adolescents and adults in many countries. Td vaccine was used in this age group but the increase in pertussis has lead to the development of a Tdap vaccine. The Tdap vaccine is a Td vaccine with a pertussis vaccine added and is thought to decrease the incidence and transmission of pertussis in the respective age group. In Korea, two products are approved by the KOREA FOOD & DRUG ADMINISTRATION, which are ADACEL$^{TM}$ (Sanofi-Pasteur, Totonto, Ontario, Canada) and BOOSTRIX$^{(R)}$ (GlaxoSmithKline Biologicals, Rixensart, Belgium) for those aged between 11-64. This report summarizes the recommendations approved by the Committee on Infectious Diseases, the Korean Pediatric Society.

• The Journal of Pediatrics of Korean Medicine
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• v.24 no.3
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• pp.1-15
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• 2010

Objectives: By analyzing data of pediatric patients who had visited the emergency room of an oriental medical hospital, we can understand their characteristics and diseases. The purpose of this study was to introduce the excellence of Oriental medicine, to develop various treatments and to revitalize pediatric emergency care at oriental medical hospital. Methods: The study was composed of 371 pediatric patients who had visited the emergency room of the $\bigcirc\bigcirc$ university oriental hospital from January 2008 to December 2009. Results: 1. Average age of the pediatric patients was 4.28 years old, and it has showed that 1 to 3 years old patients (36.7%) were the most common age. 2. The number of pediatric patients was increased in June. According to the weekly distribution data, the number of pediatric patients who had visited on Sunday was the most (29.1%). Also, the number of pediatric patients who had visited ER for 18 to 21 hours(35.6%) were the most common. 3. The major problems of hospitalization were digestive symptoms and nervous symptoms. The nervous symptoms were the most at infancy. The musculoskeletal symptoms were the most common in adolescence. The digestive symptoms were common in other stages of development. 4. The time interval between arrival and onset; within 6 hours were the most(48.0%). Acupuncture and herbal medication treatment(75.2%) were the most common medical treatments. Most of the pediatric patients(97.3%) were discharged after medical treatments. Conclusions: Pediatric patients who had visited emergency room at the oriental medical hospital were mostly not due to acute form of serious diseases. The most common disease states that have preferred to treat with oriental medicine were dyspepsia, crying, febrile fit, and ankle sprain. We have to introduce the excellence of oriental medicine, and we need to try to develop other treatments such as magnetic acupuncture, moxa therapy, aroma therapy and revitalize pediatric emergency care at oriental medical hospital.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.27 no.3
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• pp.176-185
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• 2024

Purpose: Acute pancreatitis (AP) is common among children in Bangladesh. Its management depends mainly on risk stratification. This study aimed to assess the severity of pediatric AP using computed tomography (CT). Methods: This cross-sectional, descriptive study was conducted in pediatric patients with AP at the Department of Pediatric Gastroenterology and Nutrition, BSMMU, Dhaka, Bangladesh. Results: Altogether, 25 patients with AP were included, of whom 18 (mean age, 10.27±4.0 years) were diagnosed with mild AP, and 7 (mean age, 10.54±4.0 years) with severe AP. Abdominal pain was present in all the patients, and vomiting was present in 88% of the patients. Etiology was not determined. No significant differences in serum lipase, serum amylase, BUN, and CRP levels were observed between the mild and severe AP groups. Total and platelet counts as well as hemoglobin, hematocrit, serum creatinine, random blood sugar, and serum alanine aminotransferase levels (p>0.05) were significantly higher in the mild AP group than in the severe AP group (p=0.001). The sensitivity, specificity, positive predictive value, and negative predictive value of CT severity index (CTSI) were 71.4%, 72.2%, 50%, and 86.7%, respectively. In addition, significant differences in pancreatic appearance and necrosis were observed between the two groups on CT. Conclusion: CT can be used to assess the severity of AP. In the present study, the CTSI effectively assessed the severity of AP in pediatric patients.

• Journal of the korean academy of Pediatric Dentistry
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• v.46 no.1
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• pp.10-20
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• 2019

Individual dental age is used as an index of chronological age estimation and is an important indicator of the child's growth stage. Dental age does change greatly over time, but it changes constantly. And updating information about this change is important. The purpose of this study was to provide information about tooth eruption stage using diagnostic model analysis and to investigate tooth eruption sequence and estimate chronological age based on this information. Tooth eruption stages were measured on a diagnostic model from 488 patients in 5 - 13 year old children. Based on the information on eruption stage, eruption sequence in maxilla was first permanent molar, central incisor, lateral incisor, first premolar, canine, second premolar and second permanent molar. Eruption sequence in mandible was first permanent molar, central incisor, lateral incisor, canine, first premolar, second premolar and second permanent molar. There were significant differences between males and females in the eruption stage of canine, first and second premolar, and second molar at several ages. The chronological age of male and female was estimated by the coefficient of determination of 0.816, 0.826 respectively.

• Advances in pediatric surgery
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• v.19 no.2
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• pp.81-89
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• 2013

The purposes of this study was to describe the clinical correlation of mass size and gestational age, prognostic factors in sacrococcygeal teratoma (SCT) at a tertiary pediatric surgery, University of Ulsan College of Medicine and Asan Medical Center (AMC), Seoul, Korea. Fifty five patients admitted to the AMC with a SCT between May 1989 and April 2013 were included in this retrospective review. Mean follow up was 861 days. Mean maternal age at delivery was $30{\pm}2.7$ year, mean gestational age (GA) was $36.9{\pm}3.6$ wks, and preterm delivery was 21.8%. Birth body weight was $3182{\pm}644$ g and male vs. female ratio was 1:2.05. We can't find significant difference between Caesarean section and maternal age at delivery (p =0.817). But, caesarean section was favored by gestational age (p = 0.002), larger tumor size (p =0.029) or higher tumor weight fraction rate to birth body weight (p =0.024). Type I was 13, II 21, III 17, and IV 3 according to Altman et al. classification. The tumor component was predominantly cystic(> 50%) in 73.1 %. And the majority histological classification of tumors were mature teratoma (70.3%). The motality rate was 5.5%. Three patients expired because of postpartum bleeding, post-op bleeding related complication such as DIC. SCT recurred in four patients. The interval between first and second operation was $206.2{\pm}111.0$ d (range 53~325 d). In two patients, serum AFP levels were elevated at a regular checkup without any symptom, and subsequent imaging studies revealed SCT. The most common cause of death was bleeding and bleeding related complication. So Caesarean section and active peripartum and perioperative management will be needed for huge solid SCT. In the case of Yolk sac tumor or huge immature teratoma, possibility of recurrence have to be always considered, so follow up by serial AFP and MRI is important for SCT management.

• Korean Journal of Head & Neck Oncology
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• v.36 no.2
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• pp.1-7
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• 2020

Background/Objectives: Pediatric & Adolescent thyroid cancer is a steadily increasing malignancy. We aimed to report our experience at a single tertiary institution and to evaluate the risk factors for recurrence in pediatric & adolescent patients with differentiated thyroid carcinoma (DTC). Materials & Methods: The data of 42 pediatric & adolescent patients (aged ≤19 years) with DTC who underwent thyroidectomy at Seoul St. Mary's Hospital (Seoul, Korea) between December 1997 and February 2019 were retrospectively reviewed. Clinicopathologic features and surgical outcomes were retrospectively analyzed through complete chart reviews. Results: The mean age was 16.6 years. A total of 6 (14.3%) patients experienced recurrence after initial treatment. The recurrence rate was significantly different between total thyroidectomy (TT) and lobectomy groups (23.1% vs. 0%, p=0.038). However, no statistically significant differences were found in the recurrence rate according to lymph node ratio (LNR) of 0.4 (10.7% vs 21.4%; P=0.383). Multivariate analysis confirmed age (hazard ratio [HR], 0.443; P=0.008) and bilaterality (HR, 11.477; P=0.022) as significant risk factors for DFS. Conclusion: Pediatric & Adolescent thyroid cancer is a rare malignancy and TT is recommended as the treatment of choice. However, lobectomy may be considered for Pediatric & Adolescent patients with age >16 years, tumor size <1 cm, and no bilateral disease.