1.Ultrasound Histogram in TRUS.
Won Sik PARK ; Hak Ryung CHOI ; Young Yo PARK
Korean Journal of Urology 2000;41(1):77-80
No abstract available.
Ultrasonography*
2.The Methods of Treatment in Estabilished Non-union of Femur Shaft
Bong Yeol LIM ; Sang Yo HAN ; Young An CHOI
The Journal of the Korean Orthopaedic Association 1982;17(2):366-375
The incidence of non-union in the shaft of femur is increasing gradually in spite of considerably improved methods of femoral fracture care. It is necessary that orthopaedic surgeon must draw attention to improve the method of treatment and to prevent the occurance of non-union. This paper presents the follow-up result of 27 cases among 30 established femoral shaft non-union cases, that were treated at the orthopaedic dept. of the National Medical Center from March 1971 to March 1980 by various methods. The study of this series shows the following. l. Amount 27 cases, male was predominant (82%), peak age group was 3rd & 4th decades (52%). 2. The causes of injury were auto-accident (56%), falling down accident (22%), direct blow (11%) & slipping down accident (11%). 3. The most common location was around the mid-shaft of femur (44.4%). 4. The probable causes of non-union were loosening of the implants & metal failure due to improper internal fixation (10 cases), incomplete reduction (7 cases), infection (5 cases) & inadenaute external immobilization (5 cases). 5. Excellent results were obtained by combined method of compression plate, screws & intramedullary nailing with additional autogenous bone graft.
Accidental Falls
;
Femoral Fractures
;
Femur
;
Follow-Up Studies
;
Fracture Fixation, Intramedullary
;
Humans
;
Immobilization
;
Incidence
;
Male
;
Methods
;
Transplants
3.A clinical study on ectopic pregnancy.
Yong Mi LEE ; Young Joo CHOI ; Kyu Ho JEUNG ; Young Keon YO ; Kyu Hong CHOI
Korean Journal of Obstetrics and Gynecology 1993;36(7):1369-1375
No abstract available.
Female
;
Pregnancy
;
Pregnancy, Ectopic*
4.Treatment of Tracheobronchial Stenosis with a Self-Expandable Metallic Stents.
Yo Won CHOI ; Yong Soo KIM ; Seok Chol JEON ; Chang Kok HAHM ; Chul Seung CHOI
Journal of the Korean Radiological Society 1994;31(1):35-41
PURPOSE: We analysed the role of modified Gianturco self-expandable stents in the treatment of tracheobronchial stenosis in 13 patients. MATERIALS AND METHODS: We inserted modified Gianturco self-expandable stents under the fluoroscopic and bronchoscopic guidance. There were stenosis in the trachea(n--2), the right main bronchus(n=2), and the left main bronchus(n=9). The causes of the stenosis were endobronchial tuberculosis(n=10), intubation granuloma (n=l), restenosis after surgical reconstruction(n=2). RESULTS: Dyspnea or wheezing was improved within 1 or 2 days following the procedure. There were 32% and 22% respective increase in average FEV1 and FVC. Lung perfusion scan showed 9.6% increase of perfusion in the involved lung. No complications related to the procedure were encountered. During follow-up period of up to 31 months, 2 patients showed tracheal or bronchial restenosis, at 3 and 6 months, retrospectively. There was a distal migration of the stents in one case. CONCLUSION: During the follow up period after stent insertion, improvement of the obstructive changes and dyspnea persisted in 10 out of 13 patients. The modified Gianturco self-expandable metallic stents may be a good choice for the treatment of tracheobronchial stenosis, either as a primary treatment, or when the reconstruction failed.
Constriction, Pathologic*
;
Dyspnea
;
Follow-Up Studies
;
Granuloma
;
Humans
;
Intubation
;
Lung
;
Perfusion
;
Respiratory Sounds
;
Retrospective Studies
;
Stents*
5.Fine Needle Aspiration Biopsy of the Lung in Children with Diffuse Pulmonary Lesions Suggesting Pneurnocystis carinii Pneumonia.
Yo Won CHOI ; Yong Soo KIM ; Seok Chol JEON ; Chang Kok HAHM ; Chul Seung CHOI
Journal of the Korean Radiological Society 1994;30(6):1147-1150
PURPOSE: The purpose of this study was to determine the following:the safety of fine needle aspiration biopsy in immunocompromized children with radiographic features of Pneumocystis car/nil pneumonia, its diagnostic rate in those groups and the appropriate radiographic stage for fine needle aspiration biopsy to prove the etiologic agent. METHODS AND MATERIALS: We retrospectively reviewed the patient records of 16 children with immune compromizing diseases who had undergone fine needle aspiration biopsy of the lung. They showed the infectious sign of the lung along with the radiographic pattern of diffuse pulmonary disease, suggesting Pneumocystis carlnil pneumonia. All patients had underlying lymphoreticular malignancies including 14 acute lymphocytic leukemia and 2 non Hodgkin's lymphoma. According to the radiographic pattern of biopsy site, parenchymal disease was categorized as fine reticulonodular density(n=4), ground-glass opacity(n=9) and compact consolidation(n=3). We assessed the diagnostic rate of Pneumocystis carinii pneumonia and complications in each of the three groups. RESULTS: A diagnosis of Pneumocystis carinii pneumonia was established by fine needle aspiration biopsy in 9 patients(56%) including 2 of 4 patients with fine reticulonodular density, 4 of 9 patients with ground-glass opacity, and all 3 patients with compact consolidation. Four patients(25%) developed pneumothorax, and three of them required tube insertion. There was no patient who developed hemoptysis. CONCLUSION: Fine needle aspiration biopsy is a safe and easy method that can yield Pneumocystis carinii organism at a relatively high rate in immunocompromized children with diffuse pulmonary lesions suopicions of Pneumocystis carinii pneumonia. We recommend performing fine needle aspiration biopsy regardlesss of radiographic patterns when Pneumocystis carinii pneumonia is suggested.
Biopsy*
;
Biopsy, Fine-Needle*
;
Child*
;
Diagnosis
;
Hemoptysis
;
Humans
;
Lung Diseases
;
Lung*
;
Lymphoma, Non-Hodgkin
;
Pneumocystis
;
Pneumocystis carinii
;
Pneumonia*
;
Pneumonia, Pneumocystis
;
Pneumothorax
;
Precursor Cell Lymphoblastic Leukemia-Lymphoma
;
Retrospective Studies
6.Enhancing mediastinal tumors: CT evaluation.
Woo Kyung MOON ; Jung Gi IM ; In Ok AHN ; Yo Won CHOI ; Man Chung HAN
Journal of the Korean Radiological Society 1992;28(2):205-210
CT scans of 21 patients(intrathoracic goiter=7. Castleman disease=6, pulmonary carcinoid tumor=3, parathyroid adenoma=1, thyroid carcinoma=1, paraganglioma=1, benign pleural mesothelioma=1, sclerosing hemangioma=1) with mediastinal tumors that are known to be enhanced with intravenous injection of contrast media, were studied retrospectively to investigate the enhancing capabilities f those tumors and to describe their CT findings. The degree of enhancement was estimated by visual inspection with a grading system. All but one case of cystic parathyroid adenoma showed enhancement on post-contrast scan. The degree of enhancement was not helpful in differentiating these tumors. Characteristic location and pattern of tumor extension were found in cases of intrathoracic goiter, parathyroid adenoma, thyroid carcinoma and paraganglioma. Calcifications were found in intrathoracic goiter(5/7). Castleman disease(2/6). Pulmonary carcinoid(1/3), thyroid carcinoma. Necrotic low-attenuation areas were in intrathoracic goiter(7/7), parathyroid adenoma, thyroid carcinoma and paraganglioma. In conclusion, mediastinal tumors that are known to be enhanced in the literature were enhanced with rare exception, and if we consider the predilection site of those tumors, the scope of differential diagnosis can reasonably be narrowed.
Carcinoid Tumor
;
Contrast Media
;
Diagnosis, Differential
;
Goiter, Substernal
;
Injections, Intravenous
;
Paraganglioma
;
Parathyroid Neoplasms
;
Retrospective Studies
;
Thyroid Gland
;
Thyroid Neoplasms
;
Tomography, X-Ray Computed
7.Etretinate Therapy of Epidermal Nevi.
Byeung Ik CHOI ; Myeung Nam KIM ; Chang Kwon HONG ; Byung In RO ; Chin Yo CHANG
Annals of Dermatology 1989;1(1):55-58
Two cases of epidermal nevi treated with systemic etretinate are presented. Case 1, a 21-year-old female, had been suffered from brownish verrucous papules and plaques on the left inguinal area, thigh, lower leg and dorsum of the foot since her first month of life; and case 2, a 4-year-old boy, had been suffered from brownish verrucous papular plaques on the left chest, axilla and back since birth. In both cases, there was no family history of similar disease. On histopathological examination, case 1 showed the findings of epidermolytic. hyperkeratosis but case 2 did not, with the exception of clumping of keratohyaline granules. In the treatment with systemic etretinate, we observed marked clinical improvement in case 1, but not in case 2. Any particular side effects of etretinate were not observed during treatment. We consider that etretinate therapy is useful in treating epidermal nevus with epidermolytic hyperkeratosis histopathologically.
Acitretin*
;
Axilla
;
Child, Preschool
;
Etretinate*
;
Female
;
Foot
;
Humans
;
Hyperkeratosis, Epidermolytic
;
Leg
;
Male
;
Nevus*
;
Parturition
;
Thigh
;
Thorax
;
Young Adult
8.Transthoracic Fine Needle Aspiration Biopsy of Subcarinal Lesion: Oblique Approach Using Biplane Fluoroscopic Guidance.
Yo Won CHOI ; Sung Tae KIM ; Heung Suk SEO ; Seok Chol JEON ; Chang Kok HAHM
Journal of the Korean Radiological Society 1995;33(3):379-382
PURPOSE: To evaluate effectiveness of oblique approach under biplane fluoroscopic guidance in transthoracic fine needle aspiration biopsy. MATERIALS AND METHODS: Fourteen consecutive patients underwent transthoracic fine needle aspiration biopsy for subcarinal lesions. Subcarina was the only accessible biopsy site in 13 patients. Subcarinal biopsy was performed to determine the presence of metastasis in an enlarged subcarinal lymph node in the remaining one patient. Before biopsy, we evaluated the size and location of the lesion on preliminary plain chest X-ray film and CT scan. Under dual projection fluoroscopic guidence, biopsy was performed through right posterior intercostal space with the patient prone by using oblique approach. On 15 degree LAO projection the needle was directed to the area anterior to the spine and advanced to the line extending through the posterior wall of the main bronchus. RESULTS: Cytologic diagnosis was made in 12 out of 14 patients(accuracy 85.7%). The final diagnosis consisted of 5 squamous cell carcinoma, 5 small cell carcinoma, 1 adenocarcinoma and 1 adenosquamous carcinoma. Pneumothorax developed in 2 patients(14%) and was managed by chest tube drainage. Mild hemoptysis was observed in 2. CONCLUSION: Transthoracic fine needle aspiration biopsy using oblique approach under biplane fluoroscopic guidance is a relatively safe and sensitive method for the histologic diagnosis of subcarinal lesion.
Adenocarcinoma
;
Biopsy*
;
Biopsy, Fine-Needle*
;
Bronchi
;
Carcinoma, Adenosquamous
;
Carcinoma, Small Cell
;
Carcinoma, Squamous Cell
;
Chest Tubes
;
Diagnosis
;
Drainage
;
Hemoptysis
;
Humans
;
Lymph Nodes
;
Needles
;
Neoplasm Metastasis
;
Pneumothorax
;
Spine
;
Thorax
;
Tomography, X-Ray Computed
;
X-Ray Film
9.Application of Renal Gamma Camera in the Evaluation of Renal Disease.
Korean Journal of Urology 1982;23(7):897-903
Excretory urography is the procedure most commonly used to evaluate the upper urinary tract in urologic patients. The excretory urogram provides an excellent evaluation of anatomic changes in the kidney, but is a poor indicator of renal function. Renal gamma camera using radionuclide is a simple and non-invasive method for evaluation of renal function in renal disease. The excretory urogram and renal gamma camera were discussed comparing to 43 cases of severe abnormal anatomic changes in excretory urogram and 4 cases of contraindication of excretory urogram. The results obtained were as follows. 1. Non-visualization in excretory urogram were 19 cases and 6 cases were maintained renal function. Renal gamma camera was superior to excretory urogram in evaluating renal function. 2. 20 cases were hydronephrotic kidney and 14 (70%) cases were maintained good function in renal gamma camera. 3. Renal gamma camera provided better information about total and differential renal function than excretory urogram and creatinine clearance in bilateral renal disease. 4. Renal gamma camera was a safe and non-invasive method in the evaluation of the upper urinary tract, when excretory urogram was contraindicated.
Creatinine
;
Gamma Cameras*
;
Humans
;
Kidney
;
Urinary Tract
;
Urography
10.Radiological Findings of Pleural and Mediastinal Diseases.
Tuberculosis and Respiratory Diseases 2005;58(6):543-553
Radiological analysis of chest lesions detected on chest radiographs or CT scans begins with their classification into parenchymal, pleural, or extrapleural lesions according to their presumed origin. The mediastinum is divided anatomically into the anterior, middle, and posterior mediastinal compartments, and localizing a mediastinal mass to one of these divisions can locationfacilitate their differential diagnosis. A differential diagnosis of a mediastinal mass is usually based on a number of findings, including its ; the structure from which it is arising; whether it is single, multifocal (involving several different areas or lymph node groups), or diffuse; its size and shape; its attenuation (fatty, fluid, soft-tissue, or a combination of these); the presence of calcification along with its characteristics and amount; and its opacification following the administration of contrast agents.
Classification
;
Contrast Media
;
Diagnosis, Differential
;
Lymph Nodes
;
Mediastinal Diseases*
;
Mediastinal Neoplasms
;
Mediastinum
;
Pleural Diseases
;
Radiography, Thoracic
;
Thorax
;
Tomography, X-Ray Computed