BACKGROUND: Ota's nevus is not an uncommon pigmenta y disorder in Asian people including Koreans. OBJECTIVE: The purpose of this study was to examine the clinical features of the patients and to determine the existince of any relevance between them. METHODS: We arrid out a retrospective study with cialreviews and phone interviews or direct examinatior. for clinical features of the lesions in acesible patients. RESULTS: The peak age of onset was at birth, pubertyed adolescence in decreasing order. The most frequen1,ly involved site was the eyelid, and the type I was the most common. Bluish black color was pie edorninant. The lesions which did not inili the eyelid or the lesions which developed after birtten were more likely to be light brown in cilc(p<0.05). CONCLUSION: The clrical features of Otas nevus were revwed and analyzed statistically.
Adolescent ; Age of Onset ; Asian Continental Ancestry Group ; Eyelids ; Humans ; Nevus of Ota* ; Parturition ; Retrospective Studies*

No abstract available.
Lithotripsy* ; Shock*

A sensitive thermometer utilizing thermistor as a sensing element has been constructed in order to measure the temperatures in various ocular tissues. The Wheatstone bridge was used to detect the changes in thermistor resistance. The out-put of the bridge was fed into a single-stage differential DC amplifier and read by an micro-ammeter. There was a linear relationship between temperature and meter scale. The thermistor was inserted into the inferior conjunctival sacs of 158 healthy normal human eyes. The average temperature was found to be 35.14 +/- 1.08 (in C). No difference due to sex and age distribution was found to exists. Preliminary temperature measurement has been done on rabbits. Their results are shown graphically in Fig. 3.
Age Distribution ; Humans ; Rabbits ; Thermometers*

PURPOSE: We investigated the statistical methods to compose the functional brain map of human working memory and the principal factors that have an effect on the methods for localization. MATERIALS AND METHODS: Repeated PET scans with successive four tasks, which consist of one control and three different activation tasks, were performed on six right-handed normal volunteers for 2 minutes after bolus injections of 925 MBq H0 at the intervals of 30 minutes. Irnage data were analyzed using SPM96 (Statistical Parametric Mapping) imple-mented with Matlab (Mathworks Inc., U.S.A.). Images from the same subject were spatially registered and were normalized using linear and nonlinear transformation methods. Significant difference between control and each activation state was estimated at every voxel based on the general linear model. Differences of global counts were removed using analysis of covariance (ANCOVA) with global activity as covariate. Using the mean and variance for each condition which was adjusted using ANCOVA, t-statistics was performed on every voxel To interpret the results more easily, t-values were transformed to the standard (saussian distri-bution (Z-score). RESULTS: All the subjects carried out the activation and control tests successfully. Average rate of correct answers was 95%. The numbers of activated blobs were 4 for verbal memory I, 9 for verbal memory II, 9 for visual memory, and 6 for canjunctive activation of these three tasks. The verbal working memory activates predominantly left-sided slruetures, and the visual memory activates the right hernisphere. CONCLUSION: We conclude that rCBF PET imaging and statistical parametric mapping method were useful in the localization of the brain regions for verbal and visual working memory.
Brain Mapping* ; Brain* ; Electrons* ; Healthy Volunteers ; Humans ; Linear Models ; Memory ; Memory, Short-Term ; Positron-Emission Tomography*

Clinical observations were carried out in total 1,626 cases wearing fOft contact lenses made by International Contact Lens Lab. Seoul, Korea. The results of observation on 834 patients (1,626 eyes) fitted with the Hydrophilic Soft Contact Lenses for correction of refractive errors covering the period from November 1975 to October 1976 are as follows: 1) Good results are obtained fer myopia, hyperopia and aphakia. But corneal astigmatism exceeding +/-1.75 diopters was corrected unsatisfactorily. 2) 8.2% of 133 eyes among the total 1,626 eyes fitted with soft contact lenses were discontinued weanng. 3) Physical properties of ICL polymer 1936 are obtained good results when we compared with another company made.
Aphakia ; Astigmatism ; Contact Lenses ; Contact Lenses, Hydrophilic* ; Humans ; Hyperopia ; Korea ; Myopia ; Polymers ; Refractive Errors ; Seoul

Cancer tissues are characterized by increased glucose uptake. 18F-fluorodeoxyglucose(FDG), a glucose analogue is used for the diagnosis of cancer in PET studies. This study was aimed to compare the glucose uptake and glucose transporter l(GLUT1) expression in various human colon cancer cells. We measured FDG uptake by cell retention study and expression of GLUTI using Western blotting. Human colon cancer cells, SNU-C2A, SNU-C4 and SNU-C5, were used. The cells were incubated with 1micro Ci/ml of FDG in HEPES-buffered saline for one hour. The FDG uptake of SNU-C2A,SNU-C4 and SNU-C5 were 16.8+/-1.36, 12.3+/-5.55 and 61.0+/-2.17cpm/microgram of protein, respectively. Dose-response and time-course studies represent that FDG uptake of cancer cells were dose dependent and time dependent. The rate of FDG uptake of SNU-C2A, SNU-C4 and SNU-C5 were 0.29+/-0.03, 0.21+/-0.09 and 1.07+/-0.07cpm/min/microgram of protein, respectively. Western blot analysis showed that the GLUT1 expression of SNU-C5 was significantly higher than those of SNU-C2A and SNU-C4. These results represent that FDG uptake into human colon cancer cells are different from each other. In addition, FDG uptake and expression of CLUT1 are closely related in human colon cancer cells.
Blotting, Western ; Colon* ; Colonic Neoplasms* ; Diagnosis ; Glucose ; Glucose Transport Proteins, Facilitative ; Humans*

Melanoacanthoma is an extremely rare pigmented benign mixed epithelial tumor of both melanocytes and keratinocytes. A 52-year-old female presented an asymptomatic, slightly elevated, 1. 2 cm x 0. 8 cm, dark black-colored plaque on her right buttock of 2 years' duration. Histopathologic finding of the plaque shows hyperkeratosis, focal parakeratosis, follicular plugging, acanthosih, papillomatosis and pseudo-horn cyst in the epidermis. The tumor is composed of basaloid and squarnous cells with many foci of clusters and whorls of melanin pigment-laden cells. Electron microscopic finding reveals many scattered melanocytes in the entire epidermis. Melanin granules are found mostly in the melanocytes but can also be found in a few keratinocytes.
Buttocks ; Epidermis ; Female ; Humans ; Keratinocytes ; Melanins ; Melanocytes ; Middle Aged ; Papilloma ; Parakeratosis

Osteochondromadevelop most commonly at distal femur, proximal humerus and proximal tibia, but the rib osteochondroma was reported less commonly. In this report, scapular snapping syndrome complicated by adventitious bursa and soft tissue pseudotumor surrounding the osteochondroma of the 6th rib body was treated successfully by surgical excision of them. We report this rare case with reviewing the relevant literature.
Femur ; Humerus ; Osteochondroma* ; Ribs* ; Shoulder* ; Tibia

No abstract available.
Acetazolamide* ; Aneurysm* ; Brain* ; Humans ; Perfusion* ; Subarachnoid Hemorrhage* ; Tomography, Emission-Computed, Single-Photon*

Pelvic fistulas may result from obstetric complications, inflammatory bowel disease, pelvic malignancy, pelvic radiation therapy, pelvic surgery, or other traumatic causes, and their symptoms may be distressing. In our experience, various types of pelvic fistulas are identified after pelvic disease or pelvic surgery. Because of its close proximity, the majority of such fistulas occur in the pelvic cavity and include the vesicovaginal, vesicouterine, vesicoenteric, ureterovaginal, ureteroenteric and enterovaginal type. The purpose of this article is to illustrate the spectrum of imaging features of pelvic fistulas.
Bladder Fistula/diagnosis/etiology ; Female ; Fistula/*diagnosis/*etiology ; Human ; Intestinal Fistula/diagnosis/etiology ; *Pelvis ; Ureteral Diseases/diagnosis/etiology ; Urinary Fistula/diagnosis/etiology ; Uterine Diseases/diagnosis/etiology ; Vaginal Fistula/diagnosis/etiology