• 대한소아치과학회지
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• 제45권4호
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• pp.484-491
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• 2018

선천적 치아의 결손은 비교적 흔한 치아 발육장애이며 하악 제2소구치의 결손은 치아 결손 중 가장 많이 나타나는 것으로 알려져 있다. 이 연구의 목적은 하악 제2소구치 결손과 연관되어 나타나는 다른 치아의 결손 및 치아의 발육 지연에 대해 조사하는 것이다. 이 연구는 2014년부터 2016년까지 연세대학교 치과대학을 내원하여 파노라마 방사선을 찍은 만 9세-15세의 소아청소년 중 하악 제2소구치 결손이 있는 환자를 대상으로 시행되었다. 하악 제2소구치의 결손을 가진 125명의 환자들 중 다른 치아의 결손은 58명(46.4%)에서 나타났으며 발육이 지연된 치아는 38명(30.4%)에서 나타났다. 이번 연구에서 하악 제2소구치의 결손을 가진 환자는 그렇지 않은 어린이와 비교하였을 때 치아 결손 및 치아 발육지연의 유병률이 높게 나타났다.

• Journal of Korean Neurosurgical Society
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• 제64권3호
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• pp.380-385
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• 2021

Caudal agenesis refers to the congenital malformation with the essential feature of the agenesis of the sacrococcygeal bone. It is associated with various types of spinal cord anomaly as well as with complex anomalies of genitourinary or gastrointestinal system. The wide spectrum of the disease can be attributed to its pathoembryological origin, the secondary neurulation. This review presents the definition, etiology, classification, and clinical features of the disease.

• Journal of Chest Surgery
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• 제24권1호
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• pp.83-87
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• 1991

A unilateral pulmonary artery agenesis, which develops occasionally as one of the associated anomalies in congenital cardiovascular defect like as tetralogy of Fallot, is very rare anomaly as an isolated congenital defect. The diagnostic approach for the pulmonary artery agenesis is first suggested by the unique appearance of the involved lung on a routinely checked chest roentgenogram, because most patients are asymptomatic unless pulmonary infection had been superimposed. We have recently experienced a case of left pulmonary artery agenesis, which was diagnosed by perfusion scan, digital subtraction angiogram and then treated by left pneumonectomy in a 9 year-old boy, and presented hereby with the review of relevant literature.

• 대한치과교정학회지
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• 제51권5호
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• pp.355-362
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• 2021

Objective: This study aimed to establish the prevalence and patterns of nonsyndromic tooth agenesis in patients referred to a tertiary health care facility. Methods: The intraoral records and panoramic radiographs of 9,874 patients aged 12-22 years were evaluated. The study group included 716 patients (371 male, 345 female) with non-syndromic agenesis of at least one tooth (except the third molars). The study data were assessed using descriptive statistics, chi-square test, and Mann-Whitney U test, while patterns were evaluated using a tooth agenesis code (TAC) tool. Results: A total of 1,627 congenitally missing teeth, were found in patients with non-syndromic tooth agenesis, with an average of 2.27 missing teeth per patient. The prevalence of tooth agenesis was 7.25%, and the most commonly missing teeth were the left mandibular second premolars (10.17%). The age group comparison revealed no significant difference in the median number of missing teeth per patient according to the cutoff values for ages between 12 and 22 years. When the missing teeth were examined separately according to quadrants, 114 different tooth agenesis patterns (upper right quadrant = 28, upper left quadrant = 27, lower left quadrant = 31, and lower right quadrant = 28) were identified, and 81 of these patterns appeared only once. Conclusions: This study highlights the benefits of applying the TAC tool in a large sample population. The application of the TAC tool in such studies will enable the development of template treatment plans by determining homogenous patterns of tooth agenesis in certain populations.

• 대한치과교정학회지
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• 제51권1호
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• pp.55-74
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• 2021

Objective: To systematically review studies on canine agenesis prevalence in different populations and continents, based on the jaw, sex, location, and associated dental anomalies. Methods: Electronic and hand searches of English literature in PubMed, Web of Science, Scopus, OpenGrey, and Science Direct were conducted, and the authors were contacted when necessary. Observational studies (population-based, hospital/clinic-based, and cross-sectional) were included. For study appraisal and synthesis, duplicate selection was performed independently by two reviewers. Study quality was assessed using a modified Strengthening the Reporting of Observational Studies in Epidemiology checklist, with main outcome of prevalence of canine agenesis. Results: The global population prevalence of canine agenesis was 0.30% (0.0-4.7%), highest in Asia (0.54%), followed by Africa (0.33%), and the least in Europe and South America (0.19% in both continents). Canine agenesis was more common in the maxilla (88.57%), followed by both maxilla and mandible (8.57%), and the least common was mandible-only presentation (2.86%). The condition was more common in females (female:male ratio = 1.23), except in Asia (female:male ratio = 0.88) and Africa (female:male ratio = 1). In Asia, unilateral agenesis was almost twice as prevalent as bilateral, but in Europe, the bilateral form was more common. Conclusions: The overall prevalence of canine agenesis is 0.30%, with the highest prevalence in Asia, followed by Africa, Europe, and South America. The condition is more common in the maxilla than the mandible, and in females than males (except in Asia and Africa), with unilateral agenesis being more common in Asia and the bilateral form showing a greater prevalence in Europe.

• Journal of Chest Surgery
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• 제48권6호
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• pp.439-442
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• 2015

Tracheal agenesis is an extremely rare and typically lethal congenital disorder. Approximately 150 cases have been described since 1900, and very few cases of survival have been reported. We describe tracheal reconstruction with external esophageal stenting in a patient with Floyd's type II tracheal agenesis. Neither long-term survival nor survival without mechanical ventilation for even a single day has previously been reported in patients with Floyd's type II tracheal agenesis. The infant in the present case survived for almost a year and breathed without a ventilator for approximately 50 days after airway reconstruction using external supportive stents.

• Journal of Chest Surgery
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• 제11권1호
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• pp.112-116
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• 1978

A congenital agenesis of right diaphragm which is very rare diaphragmatic anomaly was experienced in a 7-year old male patient who was very well until receiving traffic accident on Nov. 1, 1977. Congenital agenesis of diaphragm have been reported only 3 cases in the world, and no one have been reported in Korea. The surgical result of this patient was successful and the review of the literature was made.

• Journal of Chest Surgery
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• 제24권12호
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• pp.1238-1241
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• 1991

Agenesis of the hemidiaphragm is unusual congenital anomaly associated with a high mortality. A case of congenital agenesis of left diaphragm was experienced in 22-day old male patient who was dyspneic and cyanotic on admission. Emergency exploration through the left eight interspace thoracotomy showed complete agenesis of the left diaphragm. The stomach and transverse colon covered with peritoneal sac was partially herniated into left hemithorax. The left lung was slightly hypoplastic. This neonate had no intestinal malrotation. The defect was reconstructed using Dacron graft. Dacron patch was sutured with interrupted Ethibond to chest wall anteriorly, esophagus aorta and costomediastinal sinus medially, and the tenth rib posterolaterally. Postoperatively, Extubation was performed at 1st day, but some respiratory difficulty was noted. Severe dyspnea was occurred at postoperative 11th day and so reintubation was done. Intermittently ventilatory support and intravenous alimentation were continued for 9 days after that. Thereafter he had no respiratory problems at discharge.

• Childhood Kidney Diseases
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• 제13권2호
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• pp.252-255
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• 2009

동측의 신무형성증과 동반된 정낭낭종은 드문 질환이며, 대부분 선천성이지만 2/3에서 신형성부전이나 신무형성증과 연관이 있다. 대부분 10대에서 30대에 걸쳐 증상이 발현되며 배뇨시 통증이나 빈뇨, 회음부 통증, 고환이나 부고환염, 사정 후 동통이나 고환 통증이 주된 증상으로 불임이 동반되기도 한다. 무증상의 환자에서 우연히 직장 수지 검사를 통해 발견되기도 한다. 저자들은 산전 초음파상 다낭성 신이형성증 소견을 보여 초음파를 시행하였던 우측 신무형성증 및 좌측에 경미한 수신증 소견을 보였던 영아에서 추적 관찰 중 동측에 정낭낭종 소견을 관찰하였기에 보고하는 바이다.

• Tuberculosis and Respiratory Diseases
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• 제57권5호
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• pp.489-493
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• 2004

일측성 폐동맥 형성부전증은 매우 드문 선천성 기형으로서 대부분 팔로사징, 심실중격결손등과 같은 선천성 심기형을 동반하며 선천성 심기형이 동반되지 않은 고립성 편측 폐동맥 형성부전증은 극히 드물다. 이러한 환자들의 경우 성인이 될때까지 무증상으로 지내는 경우가 많으며 흉부 방사선 검사상 병변측 폐의 폐음영은 과투과되어 나타나며 흉곽은 작아진 소견으로부터 고립성 편측 폐동맥 형성부전증을 의심하게 된다. 저자들은 경미한 운동시 호흡곤란을 증상으로 내원한 50세 여환에서 흉부 전산화 단층촬영 및 환기-관류 스캔과 심초음파검사를 시행하고, 삼차원 재구성 전산화 심혈관 단층촬영을 이용하여 고립성 우측 폐동맥 형성부전증을 진단하고 치료한 1례를 경험하였기에 문헌 고찰과 함께 보고하는 바이다.