• Childhood Kidney Diseases
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• v.5 no.1
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• pp.73-77
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• 2001

Acute lobar nephronia is a focal of acute bacterial nephritis, affecting one or more of the renal lobules. Nephronia is being diagnosed more frequently in accordance with the advancing imaging techniques of urinary tract. We report a case of acute nephronia in a 4 month old boy who presented persisting urinary tract infection after intial antibiotic treatment. Ultrasonography and computerized tomography showed round wedge-shaped, non-enhancing mass in right kidney. Gallium scan also revealed the lesion in the right kidney. This lesion resolved completely on one month follow up examinations. (J. Korean Soc Pediatr Nephrol 5 : 73- 7, 2001)

• Parasites, Hosts and Diseases
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• v.33 no.2
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• pp.125-130
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• 1995

A 38-year old man visited a private clinic complaining of epigastric discomfort for 2 months A huge hepatic cyst was found by sonography and computerized tomography. An exploratory Laparotomy was performed under the impression of hydatid disease. The cyst was successfully removed. A lot of living protoscolices of Echinocucur Sranulosus were found from the cystic fluid under light microscopy. During the operation, however. the cyst was accidentally ruptured and the cystic fluid spilled out. The patient was medicated with albendazole, and had been well without any signs of anaphylaxis or recurrence for 1 year follow-up period. He had been in Saudi Arabia for 3 years. This is the 16th case of hydatid disease reported in Korea and a case without immediate complication in spite of rupture of the cyst.

• Journal of Chest Surgery
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• v.20 no.3
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• pp.473-482
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• 1987

The records of 65 patients with a confirmed diagnosis of primary lung cancer who underwent surgical therapy at the Department of Thoracic and Cardiovascular Surgery of the Keimyung University Hospital were analyzed during the period of 8 years and 4 months, from August, 1978 to December, 1986. The peak incidence was observed in the 5th decade of life and the mean age was 52.9 years old. Male versus female ratio was 8.3:1 Cough was the most frequent presenting symptom, 76.9% then chest discomfort, hemoptysis and dyspnea followed in order. 44.6% of the patient had 2 months of prediagnostic symptomatic period, 72.3% had 5 months, and the mean was 5.7 months. As for preoperative diagnosis, 62 of total 65 patients revealed the mass lesion on simple chest x-ray, and 56 of 65 patients on bronchoscopic biopsy, 10 of 37 patients on sputum cytology and 15 of 15 patients on computerized tomography of the chest were positive. Of the 65 patients, 35 [53.9%] had squamous cell carcinoma, 18 [27.7%] adenocarcinoma, 3 [4.6%] large cell carcinoma, and 3 [4.6%] small cell carcinoma all which was oat cell carcinoma. 83.1% of the total patient was resectable, and 34 underwent pneumonectomy and 20 lobectomy. Of these 65 operations, 29 was radical resection, 25 palliative, and 11 exploratory thoracotomy. As for clinical stagings, 23 patients were in Stage, I, another 23 in Stage II and 19 in Stage III, while 16 was in stage, I, 14 in stage ll and 35 in stage III in postoperative staging evaluation. In correlation of postoperative TNM classification and radical resection, those patients who had lung cancer of stage I [14/16] and stage II [9/13] had more radical resection. As postoperative complications, one patient had massive bleeding, two empyema, one empyema with bronchopulmonary fistula, and one cardiac herniation. Operative mortality rate was 1.5% [1 patient]. Mean duration between 1st operation and discovering recurrence in 18 patients was 12.7 months.

• Journal of Korean Neurosurgical Society
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• v.29 no.2
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• pp.249-254
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• 2000

Objective : As a minimally invasive strategy, endoscopic technique was introduced for removal of the traumatic intracerebral hematoma. Material and Method : A 54-year-old man with three-day history of seizure and progressive mental deterioration after traffic accident was presented. Computerized Tomography(CT) of the brain showed a huge intracerebral hematoma on the right frontal lobe and ventricle. The operation was performed via right frontal superolateral keyhole with 2cm eyebrow skin incision. Using 0-degree and 30-degree angled lens 4mm rigid endoscopes, nearly all of the hematoma was evacuated under the direct endoscopic visualization and a ventricular catheter was exactly placed into the frontal horn of the right lateral ventricle at the end of procedure. Results : The seizure was discontinued and neurological status had been improved during postoperative periods. Postoperative CT demonstrated that most of the hematoma was removed and the ventricular drainge tube was exactly placed in the right foramen of Monro. Conclusion : With endoscopic technique, the authors successfully evacuated traumatic intracerebral hematoma and exactly placed the ventricular drainage catheter under direct visualization. This technique may be considered as an another option for removal of traumatic intracerebral hematoma.

• Journal of Korean Neurosurgical Society
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• v.44 no.4
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• pp.240-244
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• 2008

Objective : Sotos Syndrome is characterized by macrocephaly, overgrowth, and developmental delay, and more than 300 patients have been reported worldwide to date. The authors reviewed the clinical characteristics of 8 patients with Sotos Syndrome in Korea for a new understanding and treatment strategies. Methods : The medical records of a total of eight Korean children with Sotos Syndrome were reviewed. All patients underwent developmental checkup, lumbar punctures for measurement of intracranial pressure (ICP), brain and spine magnetic resonance imaging and computerized tomography. Results : All 8 patients showed macrocephaly and the characteristic craniofacial features of Sotos Syndrome. Other clinical characteristics shown were overgrowth (7/8), developmental delay (7/8), congenital heart defect (3/8), flat foot (8/8), scoliosis (4/8), spina bifida (8/8), hydrocephalus (4/8), cavum vergae (3/8), and increased subdural fluid collection (5/8). Mean ICP measured via lumbar puncture was $27.35{\pm}6.25\;cm$ $H_2O$ (range 20 to 36 cm $H_2O$). Two patients received ventriculo-peritoneal shunt, and 1 patient underwent subduro-peritoneal shunt with improvement. Spinal orthosis was applied to 4/5 patients with scoliosis and 4/8 children with flat foot were provided with foot orthosis. Conclusion : In this first Korean study of 8 Sotos Syndrome patients we demonstrated the presence of spina bifida and increased ICP, which had not been previously described. The authors therefore suggest that all patients with Sotos Syndrome should undergo examination for the presence of spina bifida, and that shunt procedures would improve development and alleviate clinical symptoms.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.38 no.6
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• pp.585-592
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• 2014

In this study, a multibody simulator was developed to analyze the bio-mimetic motion of a lizard robot design. A RecurDyn multibody dynamics model of a lizard was created using a micro-computerized tomography scan and motion capture data. The bio-mimetic motion simulator consisted of a trajectory generator, an inverse kinematics module, and an inverse dynamics module, which were used for various walking motion analyses of the developed lizard model. The trajectory generation module produces spinal movements and gait trajectories based on the lizard's speed. Using the joint angle history from an inverse kinematic analysis, an inverse dynamic analysis can be carried out, and the required joint torques can be obtained for the lizard robot design. In order to investigate the effectiveness of the developed simulator, the required joint torques of the model were calculated using the simulator.

• International Journal of Industrial Entomology and Biomaterials
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• v.27 no.1
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• pp.209-217
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• 2013

The objective of this study was to evaluate the bone regeneration capability of silk membrane plus 3% 4-hexylresorcinol (3% 4-HR plus SM) in a rabbit calvarial defect model. Twenty New Zealand white rabbits were used in this study. Bilateral round shaped defects were created in the parietal bone (diameter: 8.0 mm). And the defects were covered with (1) 3% 4-HR plus SM, (2) collagen membrane (CM), (3) no graft material. After surgery, the animals were sacrificed at 4 weeks and 8 weeks. Bone regeneration was analyzed in each section by micro-computerized tomography (${\mu}$-CT). And Hematoxylin and eosin stains were used for histological analysis. As measured by ${\mu}$-CT analysis 4 weeks after surgery, the average of new bone formation in animals treated with 3% 4-HR plus SM was greater than that of animals treated with CM. and the difference was statistically significant. And well organized lamella bones were observed in the histological view of the 3% 4-HR plus SM group. Therefore, more bone regeneration was seen in animals treated with 3% 4-HR plus SM than in those treated with CM or uncovered control.

• Journal of Chest Surgery
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• v.42 no.2
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• pp.263-267
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• 2009

A pancreatico-pleural fistula (PPF), caused by rupture of a pancreatic pseudocyststectomy or obstruction of the pancreatic duct, is a rare condition. A 48-year-old man with chronic alcoholism was admitted with a massive pleural effusion. Pleural fluid studies revealed elevated amylase and lipase. A PPF complicated by a ruptured pancreatic pseudocyststectomy was diagnosed by computerized tomography scan. Although the symptoms improved with conservative management, (chest tube drainage, NPO, total parenteral nutrition, and a pancreatic secretion inhibitor), a distal pancreatectomy, including a pseudocystectomy and thoracotomy, were performed for an increasing size of the hemorrhagic pancreatic pseudocyststectomy and a recurrent hemorrhagic pleural effusion. There were no post-operative complications and the patient was discharged on post-operative day 27.

• Journal of Chest Surgery
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• v.40 no.11
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• pp.793-797
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• 2007

A communicating bronchopulmonary foregut malformation (CBPFM) is a rare congenital anomaly that is characterized by a fistula between isolated respiratory tissue and the esophagus or stomach, The presence of accessory lung tissue arising from the primitive gastrointestinal tube is a common factor in the development of all forms of bronchopulmonary foregut malformations. Recurrent pneumonia associated with cystic radiographic structures is a characteristic of the condition. Further imaging studies using esophagogram, bronchography, computerized tomography, MRI, and arteriography can help in making a diagnostic evaluation. The treatment is a surgical resection of the involved lung tissue, and fistula closure with a good prognosis. We encountered a case of CBPFM, who presented with an extralobar pulmonary sequestration and bronchogenic cyst communicating with a tubular esophageal duplication that was associated with a complete left pericardial defect.

• Journal of Yeungnam Medical Science
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• v.33 no.1
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• pp.29-32
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• 2016

Most ingested foreign bodies pass readily throughout intestinal tract if they reach the stomach. In some cases, foreign bodies may be impacted behind a luminal constriction but are rare in colon. Here, we report the case of a 59-year-old man who did laparoscopic anterior resection due to sigmoid colon cancer 2 years ago and ischemic colitis was repeated on the anastomosis site. He initially presented with symptoms of abdominal pain 3 months before and melena 1 day before admission. Abdomen computerized tomography showed a 3.2 cm segment of luminal narrowing of the proximal colon involving upstream foreign material stasis. Sigmoidoscopic approaches revealed near complete obstruction on the anal verge of 20 cm and scope passing failed. Balloon dilatations were done on the obstruction site four times all and a foreign body impacted above the obstruction site was removed by an alligator without any complications. The foreign body removed looks like plastic or a shell, about 20 mm in size.