Selective infusion of the epinephrine into the renal artery has been used in the field fo the diagnostic andthe therapeutic radiology for correct diagnosis and effective treatment, respectively. However, administration ofoverdose of epinephrine may cause serious complication, renal infarction. The study was undertaken to evaluate thesequential change of renal arterial constrictive effect of selective infusion of epinephrine into renal artery andto determine the critical doses of epinephrine producing irreversible renal infarct. A total of 25 rabbits areused, which are devided into 5 groups. Under the general anesthesia is made the selective infusion of variousdoses of epinephrine into the right renal arter of the rabbits. At the various time interval during and after theepinephrine infusion, renal angiography was doen, and 24 hrs. later, gross and microscopic findings of the kidneywere observed. The results are as follows; 1. Vasoconstriction of renal artery occurred within 2 mins. infusion,and maximum effect within 5 mins. 2. It seems that there is correlation between the amount of infused epinephrineand the time taken to recover from constiction of renal artery. 3. When epinephrine is infused into the renalartery in the rate of 1ug/min., renal infarct is not noticed below the level of 10 mins., but correlation betweenthe amount of infused epinephrine and the frequency of renal infarct occures above 20 mins. infusion.
Anesthesia, General ; Angiography ; Diagnosis ; Epinephrine ; Infarction ; Rabbits ; Radiation Oncology ; Renal Artery ; Vasoconstriction

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

During the period of 4 years from May, 1981 to April, 1985, 71 cases of obstructing subinfundibular muscular bundles of the right ventricle in congential cardiovascular anomalies were diagnosed by cariac catheterization and angiography at Hanyang University. The finding of right ventricular angiogram and degree of the right ventricular outflow obstruction, clinical data, electrocardiographic data and hemodynamic data were correlated irrespectively. The summary of this article is as follows. 1) The age of patients was ranged from 1 to 22 years old with a mean age of 8 years old. There were 39 males and 32 females with M:F ratio of 1.2:1. The incidence of obstructing subinfundibular muscular bundles of the right ventricle in congenital cardiovascular anomalies was higher with increasing age. 2) The associated cardic anomalies were as follows: 40 cases (56%) of isolated ventricular septal defect(VSD), 13(18%) of tetralogy of Fallot physiology, 7(10%) of patent ductus arteriosus(PDA), 3(4%) of pulmonary stenosis, 1 aortic stenosis, 1 double outlet of right ventricle(DORV), 1 trilogy, 1 ostium secundum defect, etc. The incidence of VSD with or without other associated cardiovascular anomalies was 56 cases(79%) out of 71 cases. 3) Maximum systolic pressure gradient between proximal and distal chamber of the right ventricle were under 25 mmHg in 32 cases, between 25 and 50 mmHg in 13 and above 50 mmHg in 26. Pressure gradients of all 7 cases with PDA were under 25 mmHg. 4) Correlative assesment of angiographic manifestation(2 indicies:Diameter of right ventricular outflow tract(systolic phase)/diameter of tricuspid valvular annulus(diastolic phase)=OT/TV, Diameter of right ventricular outflow tract(systolic phase)/Length of right ventricular diaphragmatic surface(systolic phase)=OT/RV) according to pressure gradient, OT/Tv and OT/RV values were lower the increasing pressure gradient, between proximal and distal chamber of the right ventricle. These were reverse correlations but coefficients of correlation(r) were-0.49and -0.48. Therefore, the degree of right ventricular outflow obstruction could be predicted, using 2 indices of right ventricular angiogram in individual cases, but could not be calculated accurately. 5) This indicated that pressuer gradient was also affected by technical errors, variable cardic anomalies, development of sinusoid, age and the other factors. 6) We assumed that non-invasive Doppler echocardiography could be useful in making the diagnosis and follow up of the patient with obstructing subinfundibular muscle bundles in right ventricle.
Angiography ; Aortic Valve Stenosis ; Blood Pressure ; Catheterization ; Catheters ; Child ; Diagnosis ; Echocardiography, Doppler ; Electrocardiography ; Equidae ; Female ; Heart Ventricles* ; Hemodynamics ; Humans ; Incidence ; Male ; Physiology ; Pulmonary Valve Stenosis ; Tetralogy of Fallot ; Ventricular Outflow Obstruction ; Young Adult

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

Ganglioneruroblastoma and neuroblastoma are among commonest types of childhood malignancy and a number of unique paraneoplastic syndromes have associated with both localized and disseminated neuroblastoma. The coincidence of neuroblastoma and myoclonic encephalopathy or other paraneoplastic syndromes occurs relatively rare, and therefore, failure to recognize this association could result in delays in both diagnosis and treatment, and the result could prove to be unfortunately fatal. The mechanism which underlies the remote damaging effect of neural crest tumor, especially neuroblastoma, on the nervous system resulting in myoclonic encephalopathy is by no means clear. In addition the nature and the extent of the pathologic lesion are inconsistent. We experienced a case of myoclonic encephalopathy associated with an occult mediastinal ganglioneuroblastoma in a 22-month-old girl who was hospitalized for inability to walk without support and tilting of the head to the left side. She became increasingly ataxic, and during the hospitalization myoclonic jerks of upper extremities and head along with chaotic, rapidly flickering, multidirectional spontaneous eye movements, were noted. Laboratory data included normal complete blood count, urinalysis, BUN and creatinine, electrolytes and bone marrow. Chest X-ray and chest CT revealed a relatively well marginated right posterior mediastinal mass. In a 24 hours urine excretion test, VMA and catecholamines were increased. Over the next 2 weeks, a surgical exploration revealed a right posterior mediastinal mass. Microscopically the mass proved to be a ganglioneuroblastoma, extending to right innominate artery and right axillary lymph nodes. Within 2 weeks after the surgery, radiotherapy (2,400 rads) and chemotherapy (CTX, DTIC, VCR) were started, but corticosteroid was not used. She has been free of tumor and abnormal neurological systemic symptoms and signs for 1 1/2 year since the completion of chemotherapy. In the 3 1/2 years follow-up period, her neurologic symptoms has completely resolved by the completion of 2 years chemotherapy. We report a case of mycoclonic encephalopathy associated with hidden ganglioneuroblastoma in 22-month-old girl.
Blood Cell Count ; Bone Marrow ; Brachiocephalic Trunk ; Catecholamines ; Creatinine ; Dacarbazine ; Diagnosis ; Drug Therapy ; Electrolytes ; Epilepsies, Myoclonic* ; Eye Movements ; Female ; Follow-Up Studies ; Ganglioneuroblastoma* ; Head ; Hospitalization ; Humans ; Infant ; Lymph Nodes ; Myoclonus ; Nervous System ; Neural Crest ; Neuroblastoma ; Neurologic Manifestations ; Paraneoplastic Syndromes* ; Radiotherapy ; Thorax ; Tomography, X-Ray Computed ; Upper Extremity ; Urinalysis

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*

13 cases of atypical meningioma were analysed, which were proven surgically S.N.U.H. for 3 years since Marach,1979. CT findings of atypical meningioma were central low density in 8 cases, large cyst in 4 cases, calcifiedmass in 1 case and non-specific scalp mass in 1 case. All the CT findings of atypical meningioma werepathologically proven as follows. Central low density was tissue necrosis in 5 cases, multiple cyts in 2 cases andhemorrhage in a case. Large cyst was arachnoid cyst in all 4 cases. Calcified mass was massive calcium depositionon tumor. Non-specific scalp mass on temporal area was meningioma involving soft tissue, bone and dura.
Arachnoid ; Bone and Bones ; Calcium ; Meningioma ; Necrosis ; Scalp

A 21-year-old woman presented with productive cough and hemoptysis. Chest radiograph shows a large thin-walled cystic lesion with an air-fluid level in medial portion of the left lower lung zone and opacity in paravertebral area of the right lower lung zone. Chest CT scan shows a thin-walled cavitary lesion in the posterior basal segment of left lower lobe with an air-fluid level. Area of consolidation containing air-filled cysts was also observed in medial aspect of right lower lobe. Selective angiogram obtained from aberrant artery arising from descending abdominal aorta showed two main branches of the artery supplying bilateral pulmonary lesions.
Aorta, Abdominal ; Arteries ; Bronchopulmonary Sequestration* ; Cough ; Female ; Hemoptysis ; Humans ; Lung ; Radiography, Thoracic ; Tomography, X-Ray Computed ; Young Adult

PURPOSE: To describe CT findings and differential points of cystic thymic lesions. MATERIAL AND METHOD: We evaluated retrospectively total 19 masses with well marginated cystic lesions at thymic area on CT scans. They were 10 teratomas, 3 congenital thymic cysts, 2 multilocular thymic cysts(associated with thymoma and myasthenia gravis in each), 2 cysts Assciated with thymic Hodgkin's lymphomas an ectopic parathyroid cyst, and an infected thymic cyst. The radiological abnormalities evaluated were thickness of the wall, presence or abscene of septa, mural nodule, solid component, calcification and fat component. RESULTS: All three cases of congenital thymic cysts and an ectopic parathyroid cyst appeared as thin-walled unilocular cyst with homogeneous internal density and without identifiable solid component. In multilocular thymic cyst, there were thick wall and solid components(n=2), thick internal septa and calcifications(n=l). The cysts of teratomas manifested thick walls(n=9), internal septa(n=4), calcifications(n=6), fat components(n=4), and solid components(n=4). Cysts in Hodgkin's diseases appeared as multilocular or unilocular and had thick wall and septa without calcification. infected thymic cyst presented with multilocular cystic mass with identifiable wall and septa, calcification, and solid components. CONCLUSION: The thymic diseases with cystic lesion include teratomas, congenital thymic cysts, multilocular thymic cysts, parathyroid cyst, .and Hodgkin's disease. Congenital thymic cyst and ectopic parathyroid cyst are thin-walled unilocular cystic lesions. Cystic lesions associated with teratoma, Hodgkin's disease, and multilocular thymic cyst are thick-walled cystic lesions with or without solid component.
Hodgkin Disease ; Mediastinal Cyst ; Myasthenia Gravis ; Retrospective Studies ; Teratoma ; Thymoma ; Tomography, X-Ray Computed

No abstract available.
Aorta, Thoracic* ; Ductus Arteriosus, Patent*