• Journal of Chest Surgery
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• v.38 no.12 s.257
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• pp.856-859
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• 2005

A male neonate was referred to our hospital with facial cyanosis and tachypnea at 19 days of age. Two-dimensional echocardiography showed type B interrupted aortic arch, posterior malalignment ventricular septal defect and valvular aortic stenosis. A new surgical repair was done with biventricular repair and neo-aortic arch reconstruction. Left ventricular outflow track (LVOT) was consisted of aortic valve and pulmonic valve. Right ventricular outflow (RVOT) track was reconstructed with extracardiac conduit. Postoperative two-dimensional echocardiography showed no stenosis and turbulency flow on LVOT and RVOT.

• Journal of Chest Surgery
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• v.39 no.1 s.258
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• pp.72-75
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• 2006

In a 40 year-old man who has complained of epigastric pain and dyspnea for 10 days including melena for 1 month, abdominal ultrasonography and computerized tomography revealed a large, solid mass in the right kidney and thrombus of inferior vena cava (IVC) that extended to the cavoatrial junction. Renal cell carcinoma was performed by percutaneous needle biopsy. IVC thromboembolectomy was performed using centrifugal pump driven venovenous bypass without cardiac arrest and cardiopulmonary bypass (CPB).

• Journal of Chest Surgery
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• v.43 no.1
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• pp.113-116
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• 2010

The initial presentation of distant metastases in patients with papillary thyroid carcinoma is quite rare. Most distant metastases are solid nodular lesions. A 67-year-old man who complained of severe dyspnea underwent surgery due to a large mediastinal cystic mass compressing the trachea and great vessels. Pathologically, the cystic mass was a metastatic thyroid papillary carcinoma. The thyroid evaluations were compatible with a well differentiated thyroid carcinoma. An occult thyroid carcinoma presenting as a large mediastinal cystic lesion is extremely rare.

• The Korean Journal of Nuclear Medicine
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• v.28 no.3
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• pp.397-401
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• 1994

A twenty-one-year-old man visited our hospital due to abdominal distension for a month. On the physical examination, there was severe abdominal distension with fluctuation and shifting dullness. The routine laboratory results were within normal range. On the Magnetic Resonace angiography, there wasn't any blood flow within the right and middle hepatic vein. So we concluded that the etiologic disease was Budd-Chiari syndrome. On the liver scan, there was cold area(absence of radiouptake) on entire right lobe of the liver, increased uptake on the bone marrow and showed splenomegaly. This finding was similar to the liver mass occupying right lobe with underlying chronic liver disease. On the previous reports, it is quite uncommon finding that Budd-Chirari syndrome shows lesion like space occupying one on the liver scan. So we report this case with a review of the literature.

• Journal of Veterinary Clinics
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• v.31 no.5
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• pp.435-438
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• 2014

An 11-year-old, 2.67 kg female Maltese dog with 3 weeks history of palpable cervical mass near trachea was submitted to a local animal hospital. Radiography and ultrasonography showed radiopaque mass adjacent trachea and vagus nerve. Surgically excised mass was solitary and approximately $3.5{\times}2{\times}0.8cm$ in size. Histopathologically, there were large neoplastic foci admixed with normal thyroid tissues. These neoplastic foci were composed of small to large packets of the neoplastic cells with plasmacytic morphology, and these packets were divided by fine fibrovascular septa. Immunohistochemically, most neoplastic cells in the thyroid mass showed positive reactions for cytokeratin (AE1/AE3), chromogranin A, neuron specific enolase (NSE) and the negative reaction for vimentin. Based on the gross, histopathologic and immunohistochemical characteristics, this dog was diagnosed as medullary thyroid carcinoma.

• Journal of Chest Surgery
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• v.42 no.6
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• pp.774-776
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• 2009

A 57-year-old man with dyspnea was transferred to our institution. Echocardiography demonstrated grade III aortic valve regurgitation with a bicuspid aortic valve. The preoperative coronary angiography showed a left single nary artery. Replacement of the aortic valve was performed. Ventricular fibrillation developed during weaning patient of cardiopulmonary bypass after aortotomy repair. An anomalous origin of the coronary arteries is an incidental finding. However, in patients who are undergoing aortic valve replacement, a can significantly complicate the procedure. If this is present, then it is imperative that the clearly identified and the required procedure should be modified to avoid injury to these.

• Journal of Veterinary Clinics
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• v.29 no.6
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• pp.488-493
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• 2012

Two Maltese (2-year-old, intact female and 4-month-old, intact female) and a Pekingese (10-year-old, intact male) dogs were referred due to vomiting, anorexia, head-pressing and hypersalivation. Physical examinations, complete blood count, serum chemical analysis, radiography, ultrasonography and computed tomography (CT) were evaluated. Laboratory findings in these dogs included high hepatic enzyme, serum bile acid and ammonia concentration. Microhepatia was found on abdominal radiographs in two dogs. The existence of portosystemic shunt was presented in abdominal ultrasonography. The shunt vessel was identified in all dogs by CT imaging. Based on three-dimensional CT reconstruction, the origin and termination of each shunt vessel were defined certainly. In consequence, each dog was diagnosed single extrahepatic portosystemic shunt. After diagnosis, surgical treatment was performed in all dogs. This case report describes clinical finding, imaging characteristics, and three-dimensional CT imaging of single extrahepatic portosystemic shunt cases.

• Journal of Chest Surgery
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• v.35 no.1
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• pp.52-55
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• 2002

We report one case of an 18-day-old female patient, weighing 3.4 kg, with severe cyanosis. The diagnosis was made with only transthoracic echocardiography, which revealed cor triatriatum with an atretic small opening of fibromuscular membrane, obstructive infracardiac total anomalous pulmonary venous drainage(TAPVD), severely restrictive interatrial communication, and scanty mitral inflow and aortic forward flow. The preoperative decision-making for biventricular repair was not easy due to collapsed left heart system caused by remarkably reduced blood flow An emergent operation was performed due to severe cyanosis. All left heart structures were somewhat hypoplastic but thought to be adequate for systemic circulation. Biventricular repair was done without specific intraoperative problems. The postoperative course was uneventful. The patient has been doing well with no evidence of pulmonary vein stenosis or mitral regurgitation for 4 months after operation.

• Journal of Biomedical Engineering Research
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• v.19 no.4
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• pp.379-384
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• 1998

To measure precisely the blood velocity in the skin microcirculation, we have used time domain correlation (called Cross-Correlation) based on the processing of the backscattered RF signal obtained with a wideband echographic imaging transducer, although it is difficulties of adaptation of the pulsed wave system, because of the data processing in real time and the hardware problem. This dedicated technology based on a 20MHz echographic imaging system has been developed. We present how the experimental data, i.e. the backscattered RF signal, have to be analyzed. After RF lines realignment, stationary echo canceling procedure and correlation level control, a velocity profile has been obtained. In-vitro result show that velocity measurements as low as 0.1mm/sec attainable with a 80${\mu}m$ in axial resolution. We have also validated with in-vivo experimentation on the external ear of a rabbit using B-mode sector scanning image and M-mode image of a custom made 20MHz skin image system. The flow of the "auriculares caudales" vein, a microvessel of 600 m diameter, has been detected and studied. This technique will allow a more precise exploration of circulatory troubles in cutaneous pathologies.

• Childhood Kidney Diseases
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• v.2 no.2
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• pp.138-144
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• 1998

Purpose : The use of cyclosporine and mitomycin in various immunologic or neoplastic disorders has been known to cause wide-ranged nephrotoxic effects including thrombotic microangiopathy. However, the mechanism of nephrotoxicity of these drugs has not been studied adequately, so that present experimental study has been undertaken to find out whether these drugs can cause direct damage to the kidney and to clarify the pathogenetic mechanism of nephrotoxic effect of these drugs. Materials and methods : Sprague-Dawley rats weighing 250-300 gm were used for experimental animals and unilateral renal perfusion technique, modified from the method described by Hoyer et al was used. Isolation of left kidney from systemic circulation was made by clamping aorta and left renal vein and a hole was punctured in the anterior wall of the left renal vein. Cyclosporine (2.5 mg in 4 ml solution) and mitomycin (1.6 mg in 4ml solution) were infused through left renal artery and normal saline was used in control rats. Forty-eight hours after infusion of the drugs, animals were sacrificed and left kidney removed and processed for histologic examination. Total ischemic time of left kidney was less than 15 minutes: Results : Cyclosporine-perfused group showed severe swelling of glomerular endothelial ceil along with swelling of glomerular epithelial cell and interstitial vascular endothelial cell. Mitomycin-perfused group also showed severe swelling of glomerular endothelial and epithelial cells. And in addition to these findings, they demonstrated platelets aggregation, swelling and degranulation of platelets and fibrin accumulation in some of the capillaries, indicating occurrance of thrombotic microangiopathy. Conclusion : present experiment indicates that cyclosporine and mitomycin can cause direct toxic injury to renal endothelial cell. And this direct toxic damage to endothelial cell seems to be an important initiating event for the development of thrombotic microangiopathy.