• 대한소아치과학회지
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• 제31권2호
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• pp.236-246
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• 2004

레이저 형광법을 이용하여 초기 인접면 우식증을 탐지할 수 있는지의 여부와 그 탐지 감도를 평가하여 인접면 우식증의 진단에 활용가능한지의 여부를 규명하기 위하여 사람의 치아를 사용하여 다양한 깊이의 인공우식병소를 유발시키고 이를 가시광선 투과법에 의한 시진, 교익 방사선사진 촬영, 레이저 형광법, 광활성 염료를 이용한 레이저 형광법 등으로 관찰하여 검사법 간의 일치도, 상관관계, 병소 깊이에 따른 광밀도 등을 분석하여 다음과 같은 결과를 얻었다. 1. 탈회시간과 각 검사법들과 일치도 검사에서 시진의 경우 tau-c 값이 0.08로 탈회시간에 따른 시진의 검사 수치가 일치하지 않았으나 교익 방사선사진, 레이저 형광법, 광활성 염료를 이용한 레이저 형광법의 tau-c 값은 각각 0.60, 0.48, 0,64로 일치하는 것으로 나타났다. 2. 탈회시간에 따른 병소깊이와 각 검사법 간의 상관관계는 광활성 염료를 이용한 레이저 형광법$({\gamma}=0.51)$, 레이저 형광 법$({\gamma}=0.43)$, 교익 방사선사진$({\gamma}=0.35)$, 시진$({\gamma}=0.33)$ 순으로 높았으며 광활성 염료를 이용한 레이저 형광법과 레이저 형광법은 탈회 시간과 상관관계가 있었다(P<0.05). 3. 교익 방사선사진을 기준 검사법으로 한 레이저 형광법과 광활성 염료를 이용한 레이저 형광법의 진단학적 민감도는 각각 67%, 100%였으며 특이도는 57%, 11%로 민감도에 비해 상대적으로 낮게 나타났다. 4. 병소의 깊이에 따른 병소 표면에서의 건전 치질과 우식 치질 사이의 광밀도의 차이(DFR)는 광활성 염료를 이용한 레이저 형광법이 레이저 형광법에 비해 크게 나타났으며(P<0.05) 병소 깊이의 변화에 따른 광밀도 변화는 레이저 형광법의 경우 유의한 변화를 보이는데 반해 광활성 염료를 이용한 레이저 형광법에서는 변화를 보이지 않았다. 이상의 결과를 종합하면 초기 인접면 우식증의 진단에 있어 레이저 형광법과 광활성 염료를 이용한 레이저 형광법은 교익 방사선사진에 뒤지지 않은 진단능을 가지고 있으나 우식 병소의 정성적인 분석뿐 아니라 정량적 분석이 가능한지의 여부는 향후 더 많은 연구가 필요하리라 사료된다.

• Imaging Science in Dentistry
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• 제44권2호
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• pp.115-119
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• 2014

Purpose: The aim of this in vitro study was to determine the sensitivity and specificity of cone-beam computed tomography (CBCT) and digital periapical radiography in the detection of mesial root perforations of mandibular molars. Materials and Methods: In this in vitro study, 48 mandibular molars were divided into 4 groups. First, the mesial canals of all the 48 teeth were endodontically prepared. In 2 groups (24 teeth each), the roots were axially perforated in the mesiolingual canal 1-3 mm below the furcation region, penetrating the root surface ("root perforation"). Then, in one of these 2 groups, the mesial canals were filled with gutta-percha and AH26 sealer. Mesial canals in one of the other 2 groups without perforation (control groups) were filled with the same materials. The CBCT and periapical radiographs with 3 different angulations were evaluated by 2 oral and maxillofacial radiologists. The specificity and sensitivity of the two methods were calculated, and P<0.05 was considered significant. Results: The sensitivity and specificity of CBCT scans in the detection of obturated root canal perforations were 79% and 96%, respectively, and in the case of three-angled periapical radiographs, they were 92% and 100%, respectively. In non-obturated root canals, the sensitivity and specificity of CBCT scans in perforation detection were 92% and 100%, respectively, and for three-angled periapical radiographs, they were 50% and 96%, respectively. Conclusion: For perforation detection in filled-root canals, periapical radiography with three different horizontal angulations would be trustworthy, but it is recommended that CBCT be used for perforation detection before obturating root canals.

• Advances in pediatric surgery
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• 제15권2호
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• pp.161-165
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• 2009

We report a case of cavernous hemangioma of the anterior mediastinum that was incidentally detected by chest radiography taken at a routine health check-up. A mass lesion was seen in the anterior mediastinum on computed tomography and magnetic resonance imaging. Direct surgical removal was performed for diagnosis and treatment through right thoracotomy. Histopathology confirmed the mass as a cavernous haemangioma. Post-operative course was uneventful.

• Clinical and Experimental Pediatrics
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• 제53권11호
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• pp.971-974
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• 2010

Pulmonary cryptococcosis is rare in immunocompetent subjects. Here, we present the case of a 16-year-old boy who was referred to our pediatric department for the management of multiple consolidations detected on chest radiography, which was routinely performed when the patient was being evaluated for an ankle fracture. Fine needle aspiration biopsy was performed, and the definitive diagnosis was established as cryptococcal pneumonia. After 8 weeks of antifungal treatment, the pulmonary nodules on the chest radiographs disappeared.

• Childhood Kidney Diseases
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• 제19권1호
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• pp.1-7
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• 2015

Coexisting voiding and bowel dysfunction in children are common in the clinic. The idea that overactive bladder (OAB) and constipation arise from one single pathophysiology has been reinforced in many studies. In Korea, a nationwide multicenter study conducted in 2009 showed that overall prevalence of OAB in children, 5-13 years of age, was 16.59% and this number has increased more recently. The initial step to manage coexisting fecal retention and OAB in children is to characterize their bowel and bladder habits and to treat constipation if present. Although diagnosing constipation in children is difficult, careful history-taking using the Bristol Stool Form Scale, and a scoring system of plain abdominal radiography, can help to estimate fecal retention more easily and promptly. Non-pharmacological approaches to manage functional constipation include increasing fluids, fiber intake, and physical activity. Several osmotic laxatives are also effective in improving OAB symptoms and fecal retention. Additionally, correction and education in relation to toilet training is the most important measure in treating OAB with fecal retention.

• Advances in pediatric surgery
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• 제3권2호
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• pp.168-171
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• 1997

Appendiceal perforation is uncommon in the neonate. Diess reported the first case in 1908. Approximately 111 additional cases have been reported since that time. However, with exclusion of neonatal appendicitis associated with inguinal or umbilical hernias, necrotizing enterocolitis, meconium plug, and Hirschsprung's disease, there are only 36 cases of primary neonatal appendicitis. We treated a 12 days old boy with perforation of the appendix. The infant was 3000 g at birth and had a normal spontaneous vaginal delivary at 35 weeks of gestation. The mother was 31-year-old and had premature rupture of membrane. After normal feeding for the first 5 days of life, the infant had emesis of undigested milk, decreased activity and jaundice. The baby was admitted to the Pediatrics. Progressive abdominal distension, fever, decreased activity, and vomitting developed over the next six days. Erect abdominal radiography showed pneumoperitoneum. At exploratory laparotomy, a $0.8{\times}0.6$ cm sized perforation was noted at antime-senteric border of midportion of the appendix. Trasmural inflammation and the presence of ganglion cells were noticed on histology.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제8권2호
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• pp.243-246
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• 2005

급성 A형 간염에서 흉막 삼출은 드물게 발생하는 합병증으로 불리한 예후인자는 아니며 대개는 양성의 경과를 취한다. 저자들은 전신쇠약과 황달로 내원한 12세 여아에게서 A형 간염에 동반된 흉막 삼출을 진단 하였고 특별한 치료 없이 안정 후에 호전된 1예를 경험하였기에 보고하는 바이다.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제24권2호
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• pp.238-243
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• 2021

Caudal regression syndrome (CRS) is a rare neural tube defect that affects the terminal spinal segment, manifesting as neurological deficits and structural anomalies in the lower body. We report a case of a 31-month-old boy presenting with constipation who had long been considered to have functional constipation but was finally confirmed to have CRS. Small, flat buttocks with bilateral buttock dimples and a short intergluteal cleft were identified on close examination. Plain radiographs of the abdomen, retrospectively reviewed, revealed the absence of the distal sacrum and the coccyx. During the 5-year follow-up period, we could find his long-term clinical course showing bowel and bladder dysfunction without progressive neurologic deficits. We present this case to highlight the fact that a precise physical examination, along with a close evaluation of plain radiographs encompassing the sacrum, is necessary with a strong suspicion of spinal dysraphism when confronting a child with chronic constipation despite the absence of neurologic deficits or gross structural anomalies.

• Clinical and Experimental Pediatrics
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• 제59권3호
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• pp.149-152
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• 2016

We report a case of a 5-year-old girl who developed left hemiparesis and left facial palsy, 6 days after the initiation of fever and respiratory symptoms due to pneumonia. Chest radiography, conducted upon admission, showed pneumonic infiltration and pleural effusion in the left lung field. Brain magnetic resonance imaging showed acute ischemic infarction in the right middle cerebral artery territory. Brain magnetic resonance angiography and transfemoral cerebral angiography revealed complete occlusion of the right middle cerebral artery. Mycoplasma pneumoniae infection was identified by a 4-fold increase in IgG antibodies to M. pneumoniae between acute and convalescent sera by enzyme-linked immunosorbent assay. Fibrinogen and D-dimer levels were elevated, while laboratory exams in order to identify other predisposing factors of pediatric stroke were all negative. This is the first reported pediatric case in English literature of a M. pneumoniae-associated cerebral infarction involving complete occlusion of the right middle cerebral artery.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제9권1호
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• pp.92-97
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• 2006

선천성 횡격막 내장탈출은 드문 질환으로 산전 초음파로 횡격막 헤르니아와 감별하는 것은 쉽지 않다. 선천성 횡격막 내장탈출과 횡격막 헤르니아의 예후가 다르고 수술적 접근 방식이 다를 수 있어 정확한 감별 진단이 필요하다. 저자들은 산전 초음파 검사에서 선천성 횡격막 헤르니아로 진단되었으나 수술 시에 선천성 횡격막 내장탈출로 진단된 두 증례의 후향적 분석을 통하여 비록 출생 직후의 단순 흉부 사진으로는 두 질환의 감별 진단이 어려웠으나 연속적인 단순흉부사진에서 뚜렷하게 드러나는 병변 측 횡격막을 확인하는 경험을 하였다. 따라서 산전 초음파 검사에서 횡격막 헤르니아로 진단되었다 하더라도 출생 이후에 촬영한 연속적인 단순흉부사진의 주의 깊은 판독을 통한 재평가를 강조하고자 한다.