PURPOSE: To characterize the MR findings of hypoxic-ischemic brain injury and to assess the value of the MR imaging. MATERIALS AND METHODS: SE T1 -, T2-weighted, and IR brain MR images of 44 infants and children with the past history of perinatal hypoxic insults were reviewed. Abnormal brain MR findings of 8 patients with birth history of prematurity and 36 patients with birth history of full-term/posterm including 7 with severe anoxic insult history, were compared in regard to the location and the character of the lesions RESULTS: MRI demonstrated the followings;(1)abnormal signal intensity lesions of subcortical and/or deep cerebral white matter, cortex, and deep gray matter, (2)atrophy of the cerebral white matter, cortex and corpus callosum, with/without ventriculomegaly, and (3)delay in myelination. Periventricular and deep white matter lesions were demonstrated in the prematurity, the deep white matter lesions and/or subcortical white matter lesions in the term/post-term, and deep gray matter lesions in the 7 patients with severe anoxic insults history. CONCLUSION: MR imaging was useful in the diagnosis of the hypoxic-ischemic brain injury, and the white and gray matter lesions were correlated with the time of the injury and the severity of hypoxic insult.
Brain Injuries* ; Brain* ; Child ; Corpus Callosum ; Diagnosis ; Humans ; Infant ; Magnetic Resonance Imaging ; Myelin Sheath ; Reproductive History

No abstract available.
Child* ; Humans

No abstract available.
Endoscopy ; Gastrointestinal Hemorrhage*

No abstract available.
Groin* ; Vulvar Neoplasms*

No abstract available.
Hemoglobin A* ; Humans ; Mothers* ; Postpartum Period*

PURPOSE: To propose a standard value for the maxillary sinus volume of a normal Korean adult by measuring the width and height of the sinus and analyzing their correlation and the difference of the sinus size respectively between sexes, and on the right and left sides. MATERIALS AND METHODS: Fifty-two(95 maxillary sinuses) out of 20 years or over aged patients who had taken CT in the Department of Dental Radiology, Yonsei University, Dental Hospital, between February 1997 and July 1999 who were no specific symptom, prominent bony septa, pathosis, clinical asymmetry and history of surgery in the maxillary sinus were retrospectively analyzed. RESULTS: The mean transverse width, antero-posterior width, height and volume of the normal Korean adult's maxillary sinuses were 28.33 mm, 39.69 mm, 46.60 mm and 21.90 cm3, respectively. There was a significant sex difference in the sinus volume(p<0.05). In the mean antero-posterior width, height and volume of the sinus, no significant difference was observed between both sides. All four measurements showed a significant correlation between both sides(p<0.0001). The widths and height of the sinus all showed a significant correlation with the sinus volume(p<0.0001). CONCLUSION: In the Korean normal adult's maxillary sinus, males tended to be larger than females. Except for the transverse width, all of the measurements showed no significant difference between the right and left side, but significant correlations in the four measurements between both sides were observed. Thus, the overgrowth or undergrowth in the unilateral maxillary sinus may suggest a certain pathosis or developmental abnormalities in the maxillary sinus.
Adult ; Female ; Humans ; Male ; Maxillary Sinus* ; Retrospective Studies ; Sex Characteristics

BACKGROUND: There has been no statistical study of dermatoses in the Ganganm area of Seoul which has been rapidly developing in the last 10 years. OBJECTIVE: We evaluated the recent distributions of dermatoses in the Gangam area of Seoul and compared them with the previous reports in Seoul and other provinces of Korea. METHODS: 47,015 new outpatients who visited the Yongdong Severance Hospital from 1983 to 1992 were analyzed statistically RESULTS: The study results are summarized as follows: 1. Among the 47,015 outpatients, the total number of number of male patients were 20,180(42.9%) and female patients 26,835(57.1%). 2. In age distribution, the most frequent age groups were the 3rd decade(21.3%), the lst decade(19.5%), and the 4th decade(19.2%) amounting to 60% of the total outpatients. 3. The most common 15 dermatoses were dermatophytosis, atopic dermatitis, urticaria, irritant contact dermatitis, acne vulgaris, allergic contact dermatitis, seborrheic dermatitis, other eczemas, warts, vitiligo, drug eruption, herpes zoster, psoriasis, bacterial infection, and syphilis. 4. Those dermatoses which showed an increasing tendency annually were seborrheic dermatitis, warts, vitiligo, and syphiiis. Dermatophytosis and bacterial infection showed a decreasing tendency. 5. Seasonal distribution showed that those diseases occurring most frequently during the summer were dermatophytosis, urticaria, allergic contact dermatitis, vitiligo, herpes zoster, and bacterial infection. The incidence of atopic dermatitis and psoriasis increased during the winter season. 6. In sexual distribution, acne, allergic contact dermatitis, and irritant contact dermatitis were more frequent in females, and the remainding common dermatoses did no show any difference. 7. In age distribution, atopic dermatitis and bacterial infection were most frequent in the lst decade. Urticaria, allergic contact dermatitis, acne, drung eruption, psoriasis, and syphilis were most frequent in the 3rd decade, with warts and vitiligo in the 2nd decade, and herpes zoster in the 6th decaded. 8. The distributions of dermotoses as disease groups were eczema(24.9%), urticaria-drug eruption (13.2%), dermatophytosis(10.7%), skin appendage disorder(10.1%), viral infection(10.1%), pigmentary disorders(4.5%), and papulosquamous diseases(4.0%) which constituted 78% of the total. 9. In patients dwelling in apartments, atopic dermatitis and molluscum contagiosumn showed a more frequent tendency in comparison to those living in house. 10. The most common 10 dermatoses among children were atopic dermatitis, urticaria, contact dermatitis, molluscum contagiosum, bacterial infection, dermatophytosis, vitiligo, other viral infections, and nevo-cellular nevi. On the other hand, the most common 10 dermatoses among the elderly were drmatophytosis, other eczemas, urticaria, herpes zoster, pruritus, contact dermatitis, drug eruption, lichen simplex chronicus, seborrheic dermatitis, and vitiligo. CONCLUSION: In contrast to earlier published report from Seoul, the infectous dermatoses, especially parasitic infestation, showed a decreasing tendency. The distribution pattern of the skin diseases did not differ fro other provinces of Korea in general.
Acne Vulgaris ; Age Distribution ; Aged ; Bacterial Infections ; Child ; Dermatitis, Allergic Contact ; Dermatitis, Atopic ; Dermatitis, Contact ; Dermatitis, Seborrheic ; Drug Eruptions ; Eczema ; Female ; Hand ; Herpes Zoster ; Humans ; Incidence ; Korea ; Male ; Molluscum Contagiosum ; Neurodermatitis ; Nevus ; Outpatients ; Pruritus ; Psoriasis ; Seasons ; Seoul* ; Skin ; Skin Diseases* ; Statistics as Topic* ; Syphilis ; Tinea ; Urticaria ; Vitiligo ; Warts

A retromolar canal is an anatomical variation in the mandible. As it includes the neurovascular bundle, local anesthetic insufficiency can occur, and an injury of the retromolar canal during dental surgery in the mandible may result in excessive bleeding, paresthesia, and traumatic neuroma. Using imaging analysis software, we evaluated the cone-beam computed tomography (CT) images of two Korean patients who presented with retromolar canals. Retromolar canals were detectable on the sagittal and cross-sectional images of cone-beam CT, but not on the panoramic radiographs of the patients. Therefore, the clinician should pay particular attention to the identification of retromolar canals by preoperative radiographic examination, and additional cone beam CT scanning would be recommended.
Anatomic Variation ; Cone-Beam Computed Tomography* ; Hemorrhage ; Humans ; Mandible ; Neuroma ; Paresthesia

No abstract available.
Coronary Vessels* ; Pulmonary Artery*

PURPOSE: The purpose of this study was to propose standard values for alveolar and basal bone in normal adult mandibles, and radiologically analyze the remodeling process of the edentulous mandible by examining molar areas and comparing them to the established normal values. MATERIALS AND METHODS: Panoramic and CT scans of mandible were performed on 20 normal adults and 20 edentulous or partially edentulous adults. In both groups, arch half diameter and distance of alveolar bone were measured. Also the distance from the mandibular canal to the caudal edges, the buccal and lingual external borders of basal bone, were measured. A statistical comparison between the mean values of normal and edentulous mandibles was carried out in the selected areas. RESULTS: There was evidence of decreasing arch half diameter and distance in the edentulous mandible, but statistically no significant change was seen between the normal and edentulous alveolar bone. There was evidence of decreasing buccal basal bone and increasing in the lingual basal bone in the edentulous mandible. A statistically significant difference between normal and edentulous mandibles was noted in the buccal basal bone. CONCLUSION: There was an inward and forward atrophic change of the edentulous mandibular molar area compared to the control. CT scanning required the use of sophisticated and expensive procedures to analyze the remodeling process of edentulous mandibles. Consequently, the development and application of a more simplified and objective radiographic procedure for broad and long-term study of remodeling procedures of edentulous mandible was recommended.
Adult ; Atrophy ; Humans ; Mandible* ; Molar ; Reference Values ; Tomography, X-Ray Computed