• 제목/요약/키워드: Midline

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Video-Assisted Thoracic Surgery Thymectomy: Subxiphoid Approach

  • Cho, Sukki
    • Journal of Chest Surgery
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    • 제54권4호
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    • pp.314-318
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    • 2021
  • In this paper, I present the technique of subxiphoid single-port video-assisted thoracic surgery (VATS) thymectomy for thoracic surgeons to perform this procedure safely. This procedure is indicated for all anterior mediastinal masses and may be extended to lung cancer. The patient is placed in the lithotomy position, and the operator should be on the midline. Below the xiphoid process, a skin incision is made 4-5 cm horizontally at a single thumb's width down. Under two-lung ventilation, CO2 is insufflated, maintaining 10 mm Hg. The fat tissue and thymic tissue are all resected from the sternum and pericardium between both phrenic nerves using an articulated grasper and an energy device. After retrieval of the mass with a wrap bag, a Jackson-Pratt drain is inserted instead of a chest tube. One of the advantages of this procedure is less postoperative pain than intercostal VATS. The subxiphoid approach can be used for bilateral pneumothorax, bilateral pulmonary metastasectomy, and simple lobectomy for both upper lobes and the right middle lobe.

Lower lip pits with sinus tracts in Van der Woude syndrome: a case report and review of the literature

  • Kim, Jong-Ho;Kang, Byungkwon;Kim, Baek-Kyu
    • Archives of Plastic Surgery
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    • 제49권1호
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    • pp.55-58
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    • 2022
  • In Van der Woude syndrome (VWS), a rare congenital disease, lower lip pits (LLPs) can cause an aesthetically significant deformity. Surgical treatment of LLPs is necessary if they cause recurrent inflammation or aesthetic problems. Intraoperatively, surgeons should keep in mind the possibility of deep extension of the sinus tract and the relative deficiency of the midline in VWS, which increases the risk of lip disfigurement. Herein, we emphasize the importance of using a tissue-preserving technique to improve aesthetic results in VWS patients with a sinus tract.

Dermoid Cyst of Nasal Tip with a Sinus Tract Extending to the Intracranium: A Case Report

  • Lee, Seungjun;Kim, Seong-Ik;Kim, Min-Seo;Kim, Jong-Ho
    • Archives of Plastic Surgery
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    • 제49권5호
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    • pp.648-651
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    • 2022
  • Nasal dermoid cysts are rare congenital anomalies that affect one in 20,000 to one in 40,000 individuals. Herein, we report a case of an initially misdiagnosed nasal dermoid cyst with intracranial extension. Among nasal dermoids, the lesion of the nasal tip is considered uncommon. Therefore, this should always be considered as a differential diagnosis of midline nasal masses, and a proper diagnostic approach should be taken.

A New Record of Phyllidia varicosa (Nudibranchia: Phyllidiidae) from Korea

  • Dae-Wui Jung;Chang-Bae Kim
    • Animal Systematics, Evolution and Diversity
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    • 제39권4호
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    • pp.284-288
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    • 2023
  • In this article, a phyllidiid nudibranch which is distributed widely in the Indo-Pacific region, Phyllidia varicose Lamarck, 1801, is reported based on a specimen collected from Seopseom Islet, Jeju Island, Korea. This species is characterized by bluish-gray dorsal tubercles with a yellow cap and three distinct ridges consisting of dorsal tubercles going from the anterior to posterior region, the presence of bluish-black pigment between the dorsal ridges, and a characteristic black longitudinal stripe along the midline of the sole. In this study, we provide a key to species belonging to the genus Phyllidia discovered in Korea, the morphological descriptions, photographs, and a sequence of partial mitochondrial cytochrome c oxidase subunit I of P. varicosa. Currently, four species of the genus Phyllidia have been reported to be present in Korea, including P. varicosa.

Septo-optic dysplasia associated with chromosome 15q13.3 duplication: a case report

  • Jeong A Ham;Sung Hyun Kim;Donghwi Park
    • Journal of Yeungnam Medical Science
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    • 제40권4호
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    • pp.419-422
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    • 2023
  • Septo-optic dysplasia (SOD) is a rare congenital anomaly that is clinically defined by developmental delay and characteristic brain magnetic resonance imaging findings, including optic nerve hypoplasia, pituitary hormone abnormalities, and midline brain defects. The occurrence of SOD is generally sporadic; however, it can be inherited rarely. Although an association with HESX1, SOX2, and SOX3 mutations has been identified, the detailed etiology is multifactorial and unclear. Here, we present the case of a 7-year-old girl who was clinically diagnosed with SOD and 15q13.3 duplication. Patients with duplication at chromosome 15q13.3 were reported to be diagnosed with autism spectrum disorder, epilepsy, and schizophrenia in previous studies. The relationship between SOD and the microduplication of 15q13.3 has not yet been explored. In this study, we suggest that there may be an association between chromosome 15q13.3 microduplication and SOD.

흰쥐 태아 구개융합부위 상피세포의 아포프토시스에 관한 연구 (A STUDY ABOUT THE APOPTOSIS OF EPITHELIAL CELLS IN THE FUSING FETAL RAT PALATE)

  • 이홍주;차경석;이진우
    • 대한치과교정학회지
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    • 제31권1호
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    • pp.71-83
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    • 2001
  • 악안면 부위에서 가장 빈번히 발생하는 선천적 기형의 하나인 구개열은 그 원인요소가 명확히 밝혀져 있지는 않지만 구개발생 과정 중 어느 한 단계에서의 이상으로 발생하며 양측 구개판의 융합 후 융합상피의 제거가 이루어지지 않는 것도 그 원인의 하나로 알려져 있다. 본 연구는 구개발생시 구개판 융합상피의 제거가 아포프토시스에 의한 것임을 확인하고 아포프토시스가 일어나는 시기와 위치를 규명하기 위해 시행되었다. 체중 200gm내외의 암컷흰쥐 12마리를 체중 250gm내외의 수컷흰쥐와 교배시켜 16.0일, 16.5일, 16.75일, 17.0일 태아를 얻었으며 각 태아에서 두부만을 파라핀 포매하여 전두절단 하였다. 조직절편에서 형태학적 소견을 관찰하기 위한 H-E 염색과 아포프토시스를 인지하기 위한 TdT염색을 시행한 후 광학현미경을 통해 관찰하여 다음과 같은 결론을 얻었다. 1. 16.0일과 16.5일 된 태아의 표본에서 접촉전의 양측 구개판의 내측단 상피에서는 아포프토시스를 관찰할 수 없었으며, 구개판의 접촉 직후 상피세포간의 융합이 이루어지는 부위에서는 극히 소수의 아포프토시스 세포들만이 관찰되었다. 2. 16.75일 된 태아의 표본에서 연속성을 거의 잃지 않은 정중 상피융합에서는 아포프토시스를 거의 관찰할 수 없었으나, 비강측과 구강측의 상피삼각 그리고 비중격과 구개판이 접촉하는 부위, 특히 비중격의 외측연과 접촉하는 부위에서는 다수의 아포프토시스 세포들이 관찰되었다. 3. 16.75일 된 태아의 표본에서 정중 상피융합이 연속성을 잃고 상피섬들로 나뉘어지는 시기 에서는 상피섬과 상피삼각부위에서 증가된 아포프토시스 세포들을 관찰할 수 있었으며 근접한 구강, 비강상피에서도 다수의 아포프토시스세포들이 관찰되었다. 4. 17.0일 된 태아의 표본에서 상피섬이 많이 소실되어 간엽조직에 의한 융합이 이루어지고 있는 부위에서는 아포프토시스 세포들이 거의 관찰되지 않았으나 상피삼각부위와 구강, 비강상피에서는 아직도 다수의 아포프토시스 세포들이 관찰되었다. 이상의 결과로 흰쥐 태아의 구개발생시 구개융합부위의 상피세포가 아포프토시스에 의해 제거된다는 사실을 알 수 있었으며 이러한 아포프토시스에 의한 융합상피세포의 제거는 주로 구개융합의 후반기에 상피섬과 상피삼각 부위에서 일어난다는 사실을 알 수 있었다.

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상악 전치부에서 치은 정점의 근원심적, 수직적 위치 (The Apico-Coronal and Mesio-Distal Positions of the Gingival Zenith in the Maxillary Anterior Dentition)

  • 최정윤;성동환;송광엽;박주미;안승근
    • 구강회복응용과학지
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    • 제27권1호
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    • pp.41-50
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    • 2011
  • 치은 정점이란 임상치관의 변연치은에서 가장 치근측인 지점을 말한다. 본 연구는 젊은 연령대의 한국 성인을 대상으로 상악 전치부에서 치은 정점의 근원심적, 수직적 위치를 수치화하려 하였다. 남성 25명, 여성 25명의 건강한 치주 조직을 갖는 평균나이 28.8세의 환자를 대상으로 하였다. 진단모형 상에서 치은 정점이 치아의 수직이등분선으로부터 근원심적으로 떨어져 있는 양을 측정하였다. 또한 측절치의 치은 정점이 중절치와 견치의 치은 정점을 연결하는 선으로부터 수직적으로 떨어져 있는 양을 측정하였다. 연구 결과 상악 중절치와 측절치의 치은 정점은 임상치관의 수직이등분선으로부터 원심에 위치하며 견치에서는 근원심적으로 같은 위치에 있는 경향이 있었다. 원심 위치의 빈도와 양은 중절치, 측절치, 견치 순으로 전방에 있는 치아일수록 컸다. 상악 측절치의 치은 정점은 중절치와 견치의 치은 정점을 연결하는 선으로부터 평균적으로 $0.73{\pm}0.43$ mm 치관측으로 위치하는 것으로 나타났다.

Anthropometric Analysis of Facial Foramina in Korean Population: A Three-Dimensional Computed Tomographic Study

  • Lim, Jung-Soo;Min, Kyung-Hee;Lee, Jong-Hun;Lee, Hye-Kyung;Hong, Sung-Hee
    • 대한두개안면성형외과학회지
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    • 제17권1호
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    • pp.9-13
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    • 2016
  • Background: Position of the facial foramina is important for regional block and for various maxillofacial surgical procedures. In this study, we report on anthropometry and morphology of these foramina using three-dimensional computed tomography (3D-CT) data. Methods: A retrospective review was performed for all patients who have undergone 3D-CT scan of the facial skeleton for reasons other than fracture or deformity of the facial skeleton. Anthropometry of the supraorbital, infraorbital, and mental foramina (SOF, IOF, MF) were described in relation to facial midline, inferior orbital margin, and inferior mandibular margin (FM, IOM, IMM). This data was analyzed according to sex and age. Additionally, infraorbital and mental foramen were classified into 5 positions based on the anatomic relationships to the nearest perpendicular dentition. Results: The review identified 137 patients meeting study criteria. Supraorbital foramina was more often in the shape of a foramen (62%) than that of a notch (38%). The supraorbital, infraorbital, and mental foramina were located 33.7 mm, 37.1 mm, and 33.7 mm away from the midline. The mean vertical distance between IOF and IOM was 13.4 mm. The mean distance between MF and IMM was 21.0 mm. The IOF and MF most commonly coincided with upper and lower second premolar dentition, respectively. Between the sex, the distance between MF and IMM was significantly higher for males than for female. In a correlation analysis, SOF-FM, IOF-FM and MF-FM values were significantly increased with age, but IOF-IOM values were significantly decreased with age. Conclusion: In the current study, we have reported anthropometric data concerning facial foramina in the Korean population, using a large-scale data analysis of three-dimensional computed tomography of facial skeletons. The correlations made respect to patient sex and age will provide help to operating surgeons when considering nerve blocks and periosteal dissections around the facial foramina.

Safety and Efficacy of Hypothermia (34℃) after Hemicraniectomy for Malignant MCA Infarction

  • Park, Hyun-Seok;Choi, Jae-Hyung
    • Journal of Korean Neurosurgical Society
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    • 제61권2호
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    • pp.267-276
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    • 2018
  • Objective : The beneficial effect of hypothermia after hemicraniectomy in malignant middle cerebral artery (MCA) infarction has been controversial. We aim to investigate the safety and clinical efficacy of hypothermia after hemicraniectomy in malignant MCA infarction. Methods : From October 2012 to February 2016, 20 patients underwent hypothermia (Blanketrol III, Cincinnati Sub-Zero, Cincinnati, OH, USA) at $34^{\circ}C$ after hemicraniectomy in malignant MCA infarction (hypothermia group). The indication of hypothermia included acute cerebral infarction >2/3 of MCA territory and a Glasgow coma scale (GCS) score <11 with a midline shift >10 mm or transtentorial herniation sign (a fixed and dilated pupil). We retrospectively collected 27 patients, as the control group, who had undergone hemicraniectomy alone and simultaneously met the inclusion criteria of hypothermia between January 2010 and September 2012, before hypothermia was implemented as a treatment strategy in Dong-A University Hospital. We compared the mortality rate between the two groups and investigated hypothermia-related complications, such as postoperative bleeding, pneumonia, sepsis and arrhythmia. Results : The age, preoperative infarct volume, GCS score, National institutes of Health Stroke Scale score, and degree of midline shift were not significantly different between the two groups. Of the 20 patients in the hypothermia group, 11 patients were induced with hypothermia immediately after hemicraniectomy and hypothermia was initiated in 9 patients after the decision of hypothermia during postoperative care. The duration of hypothermia was $4{\pm}2days$ (range, 1 to 7 days). The side effects of hypothermia included two patients with arrhythmia, one with sepsis, one with pneumonia, and one with hypotension. Three cases of hypothermia were discontinued due to these side effects (one sepsis, one hypotension, and one bradycardia). The mortality rate of the hypothermia group was 15.0% and that of the control group was 40.7% (p=0.056). On the basis of the logistic regression analysis, hypothermia was considered to contribute to the decrease in mortality rate (odds ratio, 6.21; 95% confidence interval, 1.04 to 37.05; p=0.045). Conclusion : This study suggests that hypothermia after hemicraniectomy is a viable option when the progression of patients with malignant MCA infarction indicate poor prognosis.

상악정중부 과잉치의 양태와 병발증의 상관관계에 관한 연구 (A STUDY OF THE CORRELATION BETWEEN THE FEATURES OF MESIODENS AND COMPLICATIONS)

  • 이윤석;김정욱;이상훈
    • 대한소아치과학회지
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    • 제26권2호
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    • pp.275-283
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    • 1999
  • 저자는 1996년 4월부터 1998년 7월까지 서울대학교병원 소아치과에 내원한 상악정중부 과잉치를 지닌 혼합치열기 및 영구치열기 아동 152명을 대상으로 하여 임상적, 방사선학적 검사를 통해 환아의 연령, 성별과 상악정중부 과잉치의 보유수, 맹출여부, 치관 형태, 위치, 치관 방향과 병발증을 조사하고 상악정중부 과잉치의 양태와 병발증의 상관관계를 chi-square analysis를 이용해 분석하여 다음과 같은 결론을 얻었다. 1. 상악정중부 과잉치로 인한 병발증이 나타나지 않은 경우가 31.6%, 인접 영구전치의 맹출 지연을 야기한 경우가 33.6%, 정중이개가 22.4%, 회전이 8.6%, 전위가 3.3%, 총생이 0.7%이었다. 2. 8.5세 이상 군에 비해 8.5세 미만 군에서 병발증 발생 빈도가 유의성 있게 높았으며(P<0.05), 상악정중부 과잉치가 설측에 위치한 경우에 비해 협측이나 치궁내 위치한 경우에 병발증 발생 빈도가 유의성 있게 높았다(P<0.01). 또 결절형인 경우에 병발증 발생 빈도가 유의성 있게 높았다(P<0.05). 3. 병발증이 나타난 104명을 대상으로 조사한 결과 8.5세 미만 군에서 맹출지연의 빈도가, 8.5세 이상 군인 경우에는 부정교합의 빈도가 유의성 있게 높았고(P<0.05), 상악정중부에 위치하는 경우 부정교합의 빈도가, 편위된 경우에는 맹출지연의 빈도가 유의성 있게 높았다(P<0.01).

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