No abstract available.
Decompression* ; Spinal Stenosis*

No abstract available.
Humans

Authors retrospectively analyzed the CT findings of cystic tumors of the mediastinum in surgically confirmed13 cases at Seoul National University Hospital during the recent 3 years from August 1980 to August 1983. Theresults are as follows: 1. Among 13 cases, bronchogenic cyst and cystic teratoma were 4 cases respectively,pericardial cyst were 2 cases, and thymic cyst and cystic hygroma was 1 case respectively. 2. CT No. of 4bronchogenic cysts was in the range of 12-112 HU, 3 cases among them had thick-walled capsules. CT No. of 4 cysticteratomas was in the range of
Bronchogenic Cyst ; Capsules ; Diagnosis, Differential ; Lymphangioma, Cystic ; Mediastinal Cyst ; Mediastinum ; Retrospective Studies ; Seoul ; Teratoma

PURPOSE: MRI is known to be an effective imaging modality of the aorta and its role is steadily increasing in the evaluation of acquired aortic diseases including aortic dissections and aortic aneurysms. However, differentiation of the aortic dissections with thrombosed false lumen from the aortic aneurysm with mural thrombus in MRI has not been easy. Therefore, the authors tried to find the characteristic MR featrses which would to differentiate the two diseases. MATERIALS AND METHODS: MR images of 6 patients with thrombosed aortic dissection and 7 patients with thrombosed aortic aneurysms were reviewed retrospectively and compared in regand to shape and extent of thrombus, dimension of aorta, and luminal flow signal. RESULTS: Thrombosed aortic dissections showed sharply demarcated crescent shaped aortic wall thickening of even thickness involving long segment of the aorta, whereas thrombosed aortic aneurysms showed irregular aortic wall thickening of uneven thickness localized in the short dilated segment of the aorta. Characteristically aortic aneurysm with mural thrombus showed eccentric intraluminal slow flow signal. In contrast to the signal void of the true lumen in aortic dissections, the residual lumen of the aortic aneurysm with mural thrombus revealed intraluminal signal due to slow flow. CONCLUSION: Familiarity to these MRI findings of thrombosed aortic dissections and aortic aneurysms may lead to the accurate differential diagnosis in majority of cases.
Aorta ; Aortic Aneurysm* ; Aortic Diseases ; Diagnosis, Differential* ; Humans ; Magnetic Resonance Imaging* ; Phenobarbital ; Recognition (Psychology) ; Retrospective Studies ; Thrombosis

PURPOSE: To describe the radiological differences between tuberculous(TBB) and non-tuberculous bronchiectasis(NTBB). MATERIALS AND METHODS: Chest radiographs(n=62), bronchograms(n=18), and CT scans(n=52) of 37 patients with TBB and 25 patients with NTBB were reviewed retrospectively. Diagnostic basis for TBB were positive sputum AFB with or without history of anti-tuberculous chemotherapy(n=35), and radiological findings of pulmonary tuberculosis (n=2). Four of NTBB had a history of severe respiratory tract infection in childhood. RESULTS: Air-fluid levels on chest radiographs were seen in 2% of TBB, and 20% of NTBB. On bronchograms, all patients with TBB had combined focal bronchostenosis, whereas patients with NTBB had tubular(50%), cystic(17%), or mixed(33%) pattern of dilatation without stenosis. On CT scans, focal emphysema was seen in 86% of the patients with TBB, and 38% of the patients with NTBB. Peribronchiolar infiltration were seen in 78% and 44% of patients with TBB and NTBB, retrospectively. CONCLUSION: Basic radiological difference between TBB and NTBB was that the former had coexistent sten.
Bronchiectasis* ; Constriction, Pathologic ; Dilatation ; Humans ; Pulmonary Emphysema ; Radiography, Thoracic ; Respiratory Tract Infections ; Retrospective Studies ; Sputum ; Thorax ; Tomography, X-Ray Computed ; Tuberculosis, Pulmonary

PURPOSE: To elucidate high-resolution CT(HRCT) findings and their pathologic basis in pulmonary oil embolism induced by LipiodoI-Adriamycin emulsion. MATERIALS AND METHODS: Pulmonary oil embolism was induced by infusing LipiodoI-Adriamycin emulsion through a peripheral vein in twelve Yorkshire pigs. Serial HRCT scans were performed on 2rid, 4th, 7th, 14th, and 28th day after the procedure. The pigs were sacrificed immediately after HRCT and histologic specimens were prepared in the same plane and level with HRCT. RESULTS: The basic pathology was reversible hemorrhagic edema of the lung. On HRCT, intraalveolar hemorrhage and edema in the acute stage manifested as ground-glass opacity or air-space consolidation of the whole secondary Iobule. The lesions were predominantly distributed over the dependent posterior lung fields because the specific gravity of Lipiodol is 1.28. Interlobular septal thickening due to edematous fluid collection was also associated. With the elapse of time, the extent and severity of the acute lesions resolved and, sometimes, changed into small nodular opacities. Pulmonary opacity was most severe on the post-embolization 2nd day and completely resolved within 2 weeks. CONCLUSION: Pulmonary embolization of LipiodoI-Adriamycin emulsion causes reversible hemorrhagic edema of the lung and Lipiodol toxicity seems to play a major role. HRCT findings of pulmonary oil embolism are quite different from those of pneumonia and pulmonary metastasis, which suggests the possibility of clincal application.
Edema ; Embolism* ; Ethiodized Oil ; Hemorrhage ; Lung ; Neoplasm Metastasis ; Pathology ; Pneumonia ; Specific Gravity ; Swine ; Veins

With the widespread introduction of contact lenses as a convenient alternative to spectacles, corneal complications in contact lens wearers has also increased. We undertook this study to assess the risk of contact lens use, and other major causes of corneal complications. We have experienced 95 contact lens wearer(133 eyes) with corneal complications at the Chung Ang University Hospital from Jan. 1991 to May 1994. Among the corneal complications, abrasion and erosion occupied the most part of them(57.9%). Other complications were punctate keratitis(36.8%) and ulceration(5.3%). The causes of corneal lesion were extended wearing, foreign body or scratching of lens, poor fitting, sleeping with contact lens wear, and unknown. In order to decrease the corneal complications in contact lens wearers, phthalmologists should warn their patients using or considering contact lenses of this potential problems and stress the necessity of meticulous hygiene and prompt evaluation of an uncomfortable eye.
Contact Lenses ; Corneal Ulcer ; Eyeglasses ; Foreign Bodies ; Humans ; Hygiene

No abstract available.
Cryopreservation* ; Humans* ; Spermatozoa*

A percutaneous nephrostomy tract was used as a conduit to the kidney and upper ureter for extraction of calculi. We have performed percutaneous extraction of renal and upper ureter stones in 52 cases with the use of the percutaneous equipment and ultrasonic lithotrite. Overall success rate was 86.5% and average operating time was 90 minutes and mean hospitalization was 6.9 days. The advantage of this technique are that a skin incision of only 1 cm. is required to remove the stone, hospital days are fewer than with open procedures and postoperative morbidity is minimal. We conclude that percutaneous nephrolithotomy can be the primary choice of treatment in upper urinary tract stones.
Calculi ; Hospitalization ; Kidney ; Nephrostomy, Percutaneous* ; Skin ; Ultrasonics ; Ureter ; Urinary Calculi

Facial palsy produces asymmetry of the face and lagophthalmos, incomplete eyelid closure. Exposure keratitis and eyeball pain can be induced by prolonged lagophthalmos, and the vision can be treatened at last. Therefore, the correc tion of lagophthalmos is important to preserve the proper visual function. Tarsorrhaphy has been the classic method of providing corneal protection in lagophthalmos caused by facial nerve palsy, but it produces a cosmetic problem and limits vision, so it should be reserved only to comatous patients. Since Morel-Fatio and Lalardrie implanted a palpebral spring in 1964 first time, several modifications have been reported to maximize the effect of spring in lagophthalmos. The authors experienced the dynamic eyelid animation with papebral spring, custom-made by authors with orthodontic wire in four patients who sufferd from exposed keratitis and eyeball pain due to lagophthalmos, which were intractable to medical therapy. Eyeball pain and keratitis were completely subsided in all patients with good lid closure. One patient was removed the palpebral spring due to recovery of facial nerve function at postoperative 6 months, other three patinets are well with implanted pa.lpebral spring.
Eyelids ; Facial Nerve ; Facial Paralysis ; Humans ; Keratitis ; Orthodontic Wires ; Paralysis*