• Tuberculosis and Respiratory Diseases
• /
• 제38권4호
• /
• pp.389-395
• /
• 1991

Pulmonary hemorrhage is a feature of several immune and idiopathic disorders. The specific etiology of this disease is determined by clinical, serological and renal pathology. Microscopic polyarteritis nodosa is a vasculitis of small vessels which is characterized by involvement of the lung, kidney and skin in young individuals. Its clinical manifestations differ from classical polyarteritis nodosa. It should be considered in differentiation of recurrent alveolar hemorrhage and hematuria. We reported a case of microscopic polyarteritis nodosa which was confirmed by renal biopsy and positive serum antineutrophil cytoplasmic antibody, associated with recurrent alveolar hemorrhage and hematuria.

• 대한의용생체공학회:학술대회논문집
• /
• 대한의용생체공학회 1990년도 추계학술대회
• /
• pp.11-14
• /
• 1990

The detection of pulmonary blood vessels is very difficult owing to their complex tree structures and different widths. In this paper, We propose a new detection algorithm. The motivation of this algorithm is that Han is the best detector. So, this algorithm is developed to imitate the human searching process. To realize it, the algorithm consist of two components. One is Pyramid Images whose one pixel is median value of four pixels of the previous low level. Searching gradually from high level to low level, We concentrate on global and main information of structure at the first. Then based on it, We search the detailed data in low level. The other is fuzzy logic which makes it easy to convert searching process expressed as human language into numeric multi_value. This algorithm showes speedy and robust results. But the more study on both human searching process and the detection of small part is needed.

• Tuberculosis and Respiratory Diseases
• /
• 제40권1호
• /
• pp.79-83
• /
• 1993

A 38-year-old female was admitted due to progressive exertional dyspnea and intermittent blood tinged sputum. Chest PA showed diffuse reticular infiltration accompanied by hyperinflation. $PaO_2$ was normal in resting state but profoundly decreased during exercise. Spirometry showed severe obstructive pattern but DLCO was markedly decreased. Lung volumes measured by helium equilibrium method was increased. On HRCT, numerous and relatively uniform sized cysts were evenly distributed throughout the bilateral lung fields. Open lung biopsy was performed and pulmonary lymphangioleiomyomatosis(LAM) was diagnosed based on the findings of abnormal proliferation of smooth muscle cells in the walls of lymphatic vessels, bronchioles, and small pulmonary veins. Immunohistochemical staining was negative for estrogen receptor but positive for progesterone receptor. Medroxyprogesterone therapy was initiated.

• Journal of Yeungnam Medical Science
• /
• 제27권1호
• /
• pp.63-68
• /
• 2010

Lymphangioleiomyomatosis (LAM) is a rare, cystic lung disease that is associated with mutation in the tuberous sclerosis genes, renal angiomyolipomas, lymphatic spread and a remarkable female gender predilection. The pathology of LAM is represented by the proliferation of immature smooth muscle cells in the walls of airways, and venules and lymphatic vessels in the lung. The clinical course of LAM is characterized by progressive dyspnea on exertion, recurrent pneumothorax and collections of chylous fluid. The diagnosis of pulmonary LAM can be made on chest X-ray, a high-resolution CT scan and lung biopsy. We experienced a case of pulmonary lymphangioleiomyomatosis in a 28-years-old female patient who had suffered from progressive dyspnea on exertion, so we report on it along with a brief review of the relevant literature.

• Journal of Chest Surgery
• /
• 제8권1호
• /
• pp.13-18
• /
• 1975

Developmental pulmonary abnormalities are known as rare condition. diagnosis was made at autopsy in the early cases reported, however, as diagnostic aids such as X-ray, bronchography, bronchoscopy and exploratory thoracotomy have come into use, the condition is being discovered more often recently in living persons, and it appears to occur with sufficient frequency to merit consideration in the differential diagnosis of certain chest conditions. According to Schneider and Boyden there are three main types of this abnormality: [1] Agenesis, in which there is complete absence of one or both lungs; there is no trace of bronchial or vascular supply or of parenchymal tissue. [2] Aplasia, in which there is suppression of all but a rudimentary bronchus which ends in a blind pouch; there are no vessels or parenchyma. [3] Hypoplasia, in which the bronchus is fully formed but is reduced in size and ends in a _ flesh structure which usually lies within the mediastinum. Rudimentary pulmonary parenchyma may be present around the bronchial stump and often is the site of cystic malformation. We experienced one case of hypoplastic lung with cystic malformation which was originated from a small aberrant rudimentary bronchus, and the rudimentary bronchus was branched from the right side of tracheal end. The diagnosis was finally confirmed by the histopathological finding. Now, we report this case with a brief review of literatures.

• Tuberculosis and Respiratory Diseases
• /
• 제56권6호
• /
• pp.677-682
• /
• 2004

저자들은 타카야수동맥염에 전형적인 맥박 감소, 사지 혈압의 차이, 사지 파행 등의 증상 없이 기침, 흉통, 객혈과 체중 감소의 호흡기 증상과 전신증상을 주소로 내원한 17세 남자 환자에서 진찰소견과 폐혈관조영술을 통해 폐동맥염을 확인하고, 대동맥조영술을 통해 쇄골하동맥과 온목동맥의 협착을 관찰하여 타카야수동맥염으로 진단한 증례를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

• 전자공학회논문지CI
• /
• 제46권6호
• /
• pp.35-43
• /
• 2009

환자의 흉부 CT 영상을 입력으로 하여 폐 영역의 결절(nodule)을 효과적으로 분류하는 것이 목적인 컴퓨터 조력 진단(Computer Aided Diagnosis, CAD) 시스템에서는 대부분 폐 영역의 혈관 추출 단계가 우선적으로 진행된다. 혈관 조영제를 투여한 환자 영상에서 폐 혈관과 폐 결절은 흉부 CT 영상에서 비슷한 감쇄를 보이므로 혈관 추출 단계에서 혈관과 결절이 함께 추출될 수 있다. 때문에 폐 혈관이 제거된 나머지 영역에서 폐 결절을 탐지 및 분류하는 방식의 폐 결절 분류기는 혈관 추출 기법의 성능에 큰 영향을 받는다. 본 논문에서는 폐 결절이 혈관으로 오인식 되어 혈관과 함께 추출될 수 있는 문제를 극복하기 위해 혈관의 두께 패턴을 분석하여 폐 결절을 재분류하는 기법을 제안한다. 제안된 방법은 폐 영역 결정 단계, 폐 혈관 영역 추출 및 골격 형성 단계, 혈관 토폴로지 구성 및 보정 단계, 그리고 혈관 후보 내 결절 재분류 단계 등의 네 단계로 이루어져 있다. 제안한 방법의 정확도를 분석하기 위해 폐 결절이 혈관을 침투하여 분포하는 환자들의 입력 영상을 이용하여 판독 전문의의 도움을 받아 분류기의 정확도 평가를 진행하였다. 실험 결과에서는 제안한 혈관 추출 및 결절 재분류 기법을 사용한 CAD 시스템의 폐 결절 분류기 성능과 재분류 절차를 진행하지 않은 분류기 성능에 대해 비교하고 제안한 방법이 혈관 영역으로 잘못 포함된 결절을 자동으로 정확하게 재분류 할 수 있음을 보여준다.

• Journal of Chest Surgery
• /
• 제17권3호
• /
• pp.371-380
• /
• 1984

Corrected transposition of the great arteries [C-TGA] is one of the rare congenital heart disease in which there is both a discordant atrioventricular relationship and transposition of the great vessels. With this arrangement, systemic venous blood passes through the right atrium into the morphologic left ventricle and out the pulmonary artery. Pulmonary venous blood returns to the left atrium, flows into the morphologic right ventricle and out the aorta. Thus, in the rare case when no additional cardiac anomaly is present, a hemodynamically normal heart exists. But more often they are symptomatic as a result of one or several of the commonly associated defects. This paper describes 13 patients who underwent repair of one or more cardiac anomalies associated with corrected transposition at SN UH, from June 1976 through June 1984. 1.8 were males and 5 females, with ages ranging from 3 years to 27 years. 2. Segmental anatomy was {S,L,L} in 12, or {I,D,D} in 1. 3.Associated anomalies were ventricular septal defect in 10, pulmonary outflow tract obstruction in 6, tricuspid insufficiency in. 4, atrial septal defect in 3, subaortic stenosis in 1, mitral insufficiency in 1, and patent ductus arteriosus in 1. 4.None had complete heart block preoperatively, and 3 developed complete heart block intraoperatively. But one of them recovered sinus rhythm on the postoperative 7th day spontaneously. 5.There were 3 cases of hospital morality. But there was no morality since Dec. 1980. 6.Patients with single ventricle, hypoplastic ventricle or those who had palliative surgery alone are not included in this review.

• Journal of Chest Surgery
• /
• 제41권4호
• /
• pp.476-479
• /
• 2008

심실 중격 결손과 폐동맥 협착을 동반한 완전 대혈관 전위를 갖는 환자에서 기존의 Rastelli수술법의 만족스럽지 않은 장기 결과가 보고되는 반면, 최근 들어 대동맥 전위술은 이 질환에서 유용한 수술방법으로 보고되고 있다. 본 증례는 우심실 유입부로 연장된 막성주위형 심실중격결손과 폐동맥 협착을 동반한 완전 대혈관 전위로 진단되어 과거에 체폐단락술을 받았던 2세 남자 환아(체중 9.6 kg)에서 우심실에서 분리한 대동맥 근부를 후방의 좌심실쪽으로 전위시켜 좌심실 유출로 재건술을 시행하고, 판막 도관을 이용하여 우심실 유출로 재건술을 시행하였다. 수술 후 시행한 심초음파 검사에서 양호한 혈역학적 소견을 보여 문헌 고찰과 함께 증례 보고를 한다.

• Tuberculosis and Respiratory Diseases
• /
• 제65권5호
• /
• pp.430-434
• /
• 2008

저자들은 간헐적인 혈담을 주소로 내원한 젊은 남자 환자에서 폐동맥 고혈압을 동반하지 않은 선천성 편측 폐동맥 형성부전증을 진단하여 보고하는 바이다. 선천성 편측폐동맥 형성부전증은 심혈관계 기형 없이 단독으로 일어나는 경우 대부분의 환자에서 경과 관찰 중 특이한 증상 없이 잘 지내지만, 일부 환자에서는 대량 객혈, 심각한 폐동맥 고혈압과 심부전증이 발생하기도 한다. 따라서 조기진단과 주의 깊은 경과 관찰이 중요하다. 폐동맥 고혈압을 가지고 있는 환자에서는 치료 결정에 있어 심도자 검사 및 폐혈관 쐐기조영술을 시행하여 수술적 치료 또는 폐동맥 고혈압에 대한 약물 치료가 고려되어야 한다.