• Journal of Chest Surgery
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• 제27권5호
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• pp.407-412
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• 1994

Congenital long-segment tracheal stenosis which involves nearly entire trachea and carina is very rare disease, but leads to life threatening obstruction in infancy and childhood. Symptoms are ranged from stridor and wheezing to severe cyanosis and respiratory failure. Routine chest X-ray is somewhat helpful to diagnose it, but definitive diagnosis can be made by bronchoscopy or tracheogram for severely narrowed tracheal lumen.Recently, we experienced a case of congenital tracheal stenois, type 1 by Cantrell classification with carinal involvement. After costal cartilage was designed as oval shaped flap and covered with pericardium, anterior and posterior augmentation was done with prepared costal cartilage.This patient died of respiratory failure at 13 days postoperatively, probably due to sustaining obstruction in association in with failure to make a sufficient widening at carinal level.Important issues in the management of congenital tracheal stenosis are rapid diagnosis, selection of appropriate surgical procedure, and detailed anesthetic schedule.In the future, more biocompatible material and more effective surgical procedures should be studied to reduce the surgical mortality and morbidity of the complicated tracheal stenosis.

• Imaging Science in Dentistry
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• 제51권3호
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• pp.323-328
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• 2021

Tooth extraction after head and neck radiotherapy exposes patients to an increased risk for osteoradionecrosis of the jaw. This study reports the results of a radiographic analysis of bone neoformation after tooth extraction in a case series of patients who underwent radiation therapy. No patients developed osteoradionecrosis within a follow-up of 1 year. Complete mucosal repair was observed 30 days after surgery, while no sign of bone formation was observed 2 months after the dental extractions. Pixel intensity and fractal dimension image analyses only showed significant bone formation 12 months after the tooth extractions. These surgical procedures must follow a strict protocol that includes antibiotic prophylaxis and therapy and complete wound closure, since bone formation at the alveolar socket occurs at a slower pace in patients who have undergone head and neck radiotherapy.

• Animal Systematics, Evolution and Diversity
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• 제36권4호
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• pp.296-303
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• 2020

Three species of the genus Dohrniphora, viz., D. cornuta, D. malaysiae, and D. prescherweberae were newly recorded from Korea. These newly recorded species can be easily identified by the characteristic that inner face of male hind femur equipped with a group of peg-like stout setae on basal sensory area. Peg-like setae are arranged perpendicularly in D. cornuta whereas linear in D. malaysiae and somewhat arched in D. prescherweberae. Also, concave area near the peg-like setae is also well developed in male which is smooth in D. cornuta, on the other hand, there is well developed distal carina in D. malaysiae and with groups of microtrichia in D. prescherweberae. In this study, detailed descriptions with photographs of three newly recorded species and a key to males of all Korean Dohrniphora species are provided.

• Journal of Species Research
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• 제10권1호
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• pp.72-77
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• 2021

Only four species of leuconids have been recorded in Korea, all belonging to the genera Eudorella Norman, 1867 and Nippoleucon Watling, 1991. In this study, Pseudoleucon japonicus Gamô, 1964 belonging to family Leuconidae Sars, 1878 is newly recorded for Korean cumacean fauna. Also, for the first time, the male of the species is fully described and illustrated. The specimens were collected from the exclusive economic zone (EEZ) in the western sea (Yellow Sea) of Korea, with a rectangular dredge during 2007-2008. This species is characterized by the following features: the carapace has strong serrations on the antero-lateral margin and a pair of short oblique ridges on the side surface; the ridges begin near the end of frontal lobe and merge with the dorsal median carina; the appendages, such as antenna 1, pereopod 2 and uropod have a lot of simple setae decorated with a bundle of hairs at the end. The present study represents the first record on the genus Pseudoleucon Zimmer, 1903 from Korea.

• Journal of Species Research
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• 제11권1호
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• pp.67-70
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• 2022

One of the small genera of the tribe Atrophini (subfamily Banchinae), the genus Amphirhachis, has been reported seven species in the world. Among them, four species (Amphirhachis fasciata, A. nigripalpis, A. rubriventris and A. tertia) from Oriental region, and four species(Amphirhachis fujiei, A. miyabi, A. nigra and A. tertia) from Eastern Palaearctic region. Unfortunately, there are no records in South Korea yet. This genus is easily distinguished from other genera of Atrophini following: clypeus strongly convex near side; posterior transverse carina of propodeum represented by a weak or faint vertical ridge at apex on each side; ovipositor sheath shorter than metasoma. In this study, the genus Amphirhachis is recorded for the first time with a newly recorded species (Amphirhachis tertia) from South Korea. New data on the taxonomy and distribution of Amphirhachis tertia are given. We also provide diagnosis and digital images of a newly recorded genus and species.

• 천문학회보
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• 제45권1호
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• pp.58.1-58.1
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• 2020

The Multipupose InfraRed Imaging System (MIRIS) Paα Galactic Plane Survey (MIPAPS) covers the whole Galactic plane with the latitude range of -3° < b < +3°. Next to the first result in l = 96°-116° (Cepheus), we present the results in l = 276°-296° (Carina). This region with the direction toward the inner Galaxy, has much higher extinction but much more Paα-emitting sources than Cepheus. We list up the detected Paα sources, and compare them with the WISE H II region catalog (there are 308 H II regions and candidates in this region) and VPHAS+ Hα image. By detecting the Paα and Hα recombination lines, 71 H II region candidates are newly confirmed as definite H II regions, out of which 53 H II regions are detected at Paα. For the Paα-detected sources, we measure the Paα and Hα fluxes and estimate the E(B-V) color excesses for the extended sources.

• Animal Systematics, Evolution and Diversity
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• 제39권3호
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• pp.118-122
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• 2023

The genus Hydroporus Clairville is the most diverse group belonging to the subfamily Hydroporinae in the family Dytiscidae. However, members of this group have not been recorded in the Korean peninsula. The genus Hydroporus Clairville is characterized by the following features: body glabrous to distinctly setose; elytra and ventral surface mainly piceous to black; epipleuron lacking a carina on humeral angle; metacoxal process conjointly with hind margin straight or slightly angulate medially. We collected the high mountain wetland and identified the species of Hydroporus uenoi Nakane based on male genitalia for the first time. A habitus photo, a redescription, mitochondrial DNA sequence, illustrations of the aedeagus of species, and habitat information are provided.

• Tuberculosis and Respiratory Diseases
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• 제40권2호
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• pp.177-184
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• 1993

연구배경 : 폐암환자에서 완치 목적의 수술이나 방사선 치료에 명백한 금기증이 보이지 않으면 폐종격동에 대한 평가를 해서 해부학적 병기를 명확히 할 필요가 있는데, 기관지 내시경 검사 도중에 쉽게 시행할 수 있는 경기관지 침흡인 세포검사(Transbronchial Needle Aspiration cytology, TBNA)로 기관 분기부하 림프절 전이여부를 검색해서 양성인 경우는 외과적 병기 결정 방법을 피할 수 있는 보조적인 방법으로 사용할 수 있을 것으로 알려져 있다. 저자들은 TBNA의 임상적 가치를 평가하여 보기 위하여 본 연구를 하였다. 방법 : 폐암이 의심되는 환자에서 진단 목적의 기관지 내시경 검사중에 기관 분기부하 림프절의 TBNA를 동시에 시행하였으며, 이중 병리조직학적으로 폐암으로 확진된 42예에서 TBNA의 성적을 분석하였다. 결과: 1) 폐암으로 확진된 42예중 34예 (81.1%)에서 적절한 검체를 얻을 수 있었으며 이때 암세포 양성율은 14.7%이었으며, 암세포 형태에 따른 차이는 없었다. 2) 내시경상 기관 분기부위의 비후가 저명한 경우의 암세포 양성율은 33.3%로 그렇지 않은 경우 5.3%에 비해 유의하게 높았다(p<0.05). 3) 흉부 CT상 분기부하 림프절이 비대된 경우 암세포 양성율은 50.0%로 비대가 없는 경우의 암세포 양성율 4.8%에 비해 유의하게 높았다(p<0.01). 또한 CT상 기관 분기부하 림프절의 비후가 없었던 1예에서 TBNA상 암세포 양성이었으며, 수술에 의한 조직 검사상 양성으로 확인되었다. 4) TBNA를 시행한 후 특별한 합병증은 발생되지 않았다. 결론 : 폐암 환자에 있어서 기관 분기부하 림프절의 TBNA는 CT상 림프절이 커진 경우와 기관 분기부위 비후가 있는 경우에 양성율이 높은 것으로 나타났고, 따라서 이런 경우 TBNA에 의해 상당수가 외과적 병기 결정 방법을 피할 수 있을 것으로 기대되었다.

• Journal of Chest Surgery
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• 제50권5호
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• pp.403-406
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• 2017

Tracheobronchial rupture due to blunt chest trauma is a rare but life-threatening injury in the pediatric population. Computed tomography (CT) is not always reliable in the management of these patients. An additional concern is that ventilation may be disrupted during surgical repair of these injuries. This report presents the case of a 4 -year-old boy with an injury to the lower trachea and carina due to blunt force trauma that was missed on the initial CT scan. During surgery, he was administered venoarterial extracorporeal membrane oxygenation (ECMO). Although ECMO is not generally used in children, this case demonstrated that the short-term use of ECMO during pediatric surgery is safe and can prevent intraoperative desaturation.

• Journal of Chest Surgery
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• 제9권2호
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• pp.293-297
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• 1976

One mid-esophageal carcinoma underwent esophagogastrectomy using an exclusive right thoracic approach entailing mobilization of the stomach through the esophageal hiatus. 62 year old male farmer was admitted with chief complaints of dysphagia and weight loss of 5 Kg. for 6 months, and regurgitation after soft meal for one week prior to this admission. Preoperative esophagogram revealed stricture with fungating mass at the level of the carina, which was diagnosed as squamous cell carcinoma at the time of esophagoscopic biopsy about 33 cm from incisor. Bronchoscopy revealed no invasive lesion or carinal fixation, and laboratory examinations were excellent for operative intervention. An exclusive right thoracic approach through right 5th rib bed was made for radical esophagectomy, mobilization of the stomach through the esophageal hiatus and primary esophagectomy. Postoperative recovery was uneventful except increased bronchial secretion due to senile emphysema, and follow up for 5 months after esophagectomy revealed good functioning esophagus with mild epigastric fullness after meal. Exclusive right thoracic approach for radical esophagectomy seems to be the procedure of choice in selected cases.