The argon laser has been used in the treatment of a variety of cutaneous vascular and pigmented lesions. In 1983, authors reported on the therapeutic effect from argon laser treatment of nevus flammeus. This study was undertaken to evaluate the therapeutic effect and complication of the argon laser on many cutaneous lesions except nevus flammeus. The data of the 67 patients who were treated between November, 1984 and March, 1986 and could be followed up over 3 months at the Department of Dermatology, Seoul National University Hospital were analyzed. Patients were treated with Coherent Radiation Model No. 920 Laser with a spot size of 1 mm in diatemer. The pawer ranges were between 1.6 and 2.6 W using pulsed wave or continuous wave according to the size and the shape of the lesions. The argon laser is an effective modality in the treatment of superficial vascular lesions and especially when telangiectasia is prominent. In pigmented lesions, argon laser is effective for pigmented nevi excluding intradermal nevi and has been found effective in small sized nevus spilus and lentigines.
Argon* ; Dermatology* ; Humans ; Lentigo ; Nevus ; Nevus, Intradermal ; Nevus, Pigmented ; Port-Wine Stain ; Seoul ; Telangiectasis

An intraparotid benign lymphoepithelial cyst is a rare disease characterized by unilateral painless swelling of parotid region. The histogenesis is controversial. Surgical excision is recommended for diagnosis and curative treatment. We present a case of benign lymphoepithelial cyst arising in a patient with neurofibromatosis. A 46-year-old woman presented with a slowly growing multilocular cystic mass in the left cheek. The cystic mass measured 4 cm in maximal outer diameter and the cystic wall was thick and yellowish pale to gray, soft with well circumscribed margin. Microscopically, the multilocular cyst was lined by stratified squamous epithelium for the most part and underlying lymphoid tissue aggregates with follicles and sharply demarcated from adjacent salivary parenchyma which is of normal appearance and without lymphoid aggregates. Since this lesion is absolutely benign, it is important to separate this benign cyst from cystic salivary gland tumors.
Female ; Humans ; Cysts

No abstract available.
Behcet Syndrome*

No abstract available.
Humans ; Uterine Cervical Neoplasms*

No abstract available.
Animals ; Immunohistochemistry* ; Neurons* ; Rats* ; Substantia Nigra*

No abstract available.
Joints*

PURPOSE: To evaluate the frequently of low ahetenuation area in enhanced CT scans of non-Hodgkin lymphoma(NHL) and to find out if there is any pertinent relationship between this and the histopathologic classification. MATERIALS & METHODS: The authors reviewed CT scans in the newly diagnosed 53 patients with NHL. We defined the-low attenuation area as the one with CT attenuation value lower than that of the muscle, surrounding lesion, or other lymph nodes after contrast enhancement. NHL with the low attenuation areas were correlated with the histopathologic findings according to the classification based on the Working Formulation and the frequency of the lesion was evaluated. RESULT: Of the 53 patients, the low attenuation area was found in 13 patients (25%) at CT. The histopathologic classification could be made in 12 patients, among whom one patient was classified as low grade, six as intermediate grade, and five as high-grade. Concerning the specific cell typing, the diffuse large cell type was most common in intermediate-grade NHL seen in five patients and the large cell, immunoblastic type was most common in high-grade NHL seen ih three patients. CONCLUSION: The authors concluded that the low attenution area within lymphoma is not an infrequent finding at CT, and there was no stastistically significant correlation between this finding and the prognostic grading of the Working Formulation.
Classification ; Humans ; Lymph Nodes ; Lymphoma ; Lymphoma, Non-Hodgkin* ; Tomography, X-Ray Computed

Non-metrical morphologic variations of skull foramina were studied with 250 crania of Korean adults. Studied morphologic variationts were presence of supra-orbital foramen(33.3%), frontal foramen(27.7%), accessory infraorbital foramen(13.2%), accessory lesser palatine foramen(41.0%), Vesalius foramen (16.9%), Huschke foramen(18.8%), condylar canal(62.6%) and parietal foramen(49.8%). The ahsence of posterior ethmoidal foramen(0.2%), zygomaticofacial foramen(7.1%) and mastoid foramen(30.2%) was also observed. The variations were presence of the exsutural location of anterior ethmoidal foramen 30.8%), mastoid foramen(35.9%) and incomplete development of oval foramen(4.9%), foramen spinosum(9.6%), hypoglossal foramen(9.6%). And incidence of these variations were compared with 12 different geographical localitics.
Adult ; Humans ; Incidence ; Mastoid ; Rabeprazole ; Skull*

The purpose of this study is to confirm the effectiveness of stay-suture which is commonly used in the procedure of end to end anastomosis, to find out general biomechanical properties of peripheral nerve with gradual stretching and to evaluate the histological difference after breakage of the nerve. The sciatic nerves of adult rabbits were excised and they were grouped by I and II. Group I was composed of 14 normal sciatic nerves and group II, 14 sciatic nerves sutured with 5-0 nylon after transection. They were stretched on the "Instron" universal testing machine at a constant rate of 200mm/min until breakage took place and the results were compared. The mean maximal tensile strength was 13.6N in group I and 2.1N in group II, representing about one seventh value. The mean ultimate tensile strength was 4.2MPa in group I and 0.9MPa in group II, representing about one fifth value. In load-elongation curve of group I, viscoelastic property was noted as all other biological tissues have. The mean modulus of elasticity was 19 in normal sciatic nerves, which is somewhat lower value than other tissues, indicating superior elastic property of peripheral nerves. Transverse histologic examination showed that epineurium lost its continuity earlier than perineurium, implying perineurium is a more resistant structure than epineurium. However, to confirm this, it is thought to be necessary to examine the nerves serially during distraction at each different status. In conclusion, stay-suture provided about one fifth of ultimate tensile stress, implying its usefullness of resisting excessive tension in end to end anastomosis of peripheral nerves. Normal sciatic nerves showed viscoelastic property with mean modulus of elasticity of 19.
Adult ; Elastic Modulus ; Humans ; Nylons ; Peripheral Nerves ; Rabbits ; Sciatic Nerve ; Tensile Strength

Open reduction and internal fixation of the displaced fractures of the acetabulum represents one of the greatest challenge in fracture surgery. The purpose of our study is to report the results of operative treatment and establish the guideline for the operative treatment of the displaced acetabular fractures with the analysis of the clinical and radiological results. This retrospective study reports the results of 21 fractures in 21 patients(19 male and 3 female) treated by open reduction and internal fixation from January 1990 to July 1994. The patients were followed up more than 1 year and mean length of follow-up was 2.3 years. According to Letournel's classification, we had 9 elementary fractures(42.8%) and 12 associated fractures(57.2%). Among the elementary fractures, the posterior wall fracture was the most common type(7 cases, 33.3%) and the transverse-posterior wall fracture was the most common type among associated fractures(4 cases, 19.0%). Surgical approaches were 14 Kocher-Langenbeck, 6 Ilioinguinal and 1 extended iliofemoral. Indirect reduction and specially designed reduction method using C-arm and radiolucent operating table were also helpful to achieve satisfactory reduction. Overall quality of clinical results was graded according to the D'Aubigne and Postel rating score. Satisfactory reduction was gained in 16 cases(76.1%). Unsatisfactory reduction was gained in 5 cases(23.8%). Among the cases within category of satisfactory reduction, there were 7 excellent and 8 good clinical results. But among unsatisfactorily reduced 5 cases, there were 2 good clinical results. It seems that the satisfactory operative reduction of the fracture is the factor that correlates with a satisfactory clinical result. There were complications such as 3 secondary osteoarthritis(14.2%), 3 wound infection(14.2%, 2 superficial and 1 deep), 2 iatrogenic nerve palsy(9.5%, 1 sciatic and 1 obturator nerve) and 1 intrapelvic protrusion acetabuli(4.7%) and no postoperative ectopic ossification.
Acetabulum ; Classification ; Follow-Up Studies ; Humans ; Male ; Methods ; Operating Tables ; Ossification, Heterotopic ; Retrospective Studies ; Wounds and Injuries