BACKGROUND: Nevus depigmentosus was first reported in 1884 by Lesser. It is defined as a congenital non-progressive hypopigmented macule or patch that is stable in its relative size and distribution throughout the life of the individual. The etiopathogenesis and histopathological characteristics of nevus depigmentosus are not fully established. OBJECT: The purpose of this study is to investigate the clinical and histopathological characteristics and pathogenesis of nevus depigmentosus. METHODS: Clinieal survey was carried out on forty-nine patients with nevus depigmentosus and two skin biopsies were taken from eighteen patients; from the central part of the depigmented lesion and the border of the lesion including the perilesional normal skin. The sections were stained with hematoxylin-eosin, Fontana-Masson and S-100 protein. The ultrastructural evaluation were also done to detect alternation of melanocytes. RESULTS: The results are as follows ; 1. The lesions were mostly (91.8%) present before the age of three, but some lesions appeared in childhood (8.2%). 2. The lesions were most frequently found on the trunk (42.9%), followed by the face and scalp (20.4%). 3. There were 33 patients (67.3%) with the isolated type, 15 patients (30.6%) with the dermatomal type and one patient with the whorled type. 4. Histopathological studies have shown that the stainability of Fontana-Masson in the lesions of nevus depigmentosus was decreased compared with perilesional nomal skin, but there were no changes in the number of melanocytes. 5. There was a great reduction in the number of melanosomes in melanocytes and keratinocytes of nevus depigmentosus. In keratinocytes, there was some aggregations of melanosomes and some of them showed membrane bound architecture. CONCLUSION: The results of this study support the fact that nevus depigmentosus is caused by functional defects of melanocytes and morphological abnonnalities of melanosomes.
Biopsy ; Humans ; Keratinocytes ; Melanocytes ; Melanosomes ; Membranes ; Nevus* ; S100 Proteins ; Scalp ; Skin

A total of 162 patients with invasive cervical cancer was investigated retrospectively with a view to elucidate the efficacy of pretreatment staging procedures of application with intravenous pyelography, cystoscopy, rectosigmoidoscopy. All 72 intravenous pyelograms, 155 sigmoidoscopies, 158 cystoscopies were normal. Of 111 patients with stage Ib who had paraaortic lymph node biopsies, two patients had a positive node(0.02%). Of 51 patients with stage II who had paraaortic lymph node biopsies, five patients had positive paraaortic lymph node(10%). And the accuracy of computed tomography and magnetic resonance imaging in the evaluation of invasive cervical cancer was assessed. In evaluating stage of cervical cancer, clinical staging had an accuracy of 78.9%, compared with 65.7% for CT and 58.9% for MRI. And for detection of parametrial invasion, clincal staging had an accuracy of 85.9%, compared with 85.1% for CT and 78.9% for MRI. Both modalities were comparable in evaluating lymph node metastasis ( 76.1% for CT, 74.4% for MRI ). IVP, cystoscopy and sigmoidoscopy for staging procedure evaluated in this study are unnecessary and should no longer be performed in patients with early stage cervical cancer. In addition, paraaortic lymph node biopsies in the absence of clinically suspicious nodes are not warranted. Compared with CT and MRI, pelvic examination offered improved evaluation of cervical cancer staging, parametrial invasion, but CT and MRI was useful in detecting the pelvic lymph node metastasis which was nearly impossible by clinical evaluation.
Biopsy ; Cystoscopy ; Gynecological Examination ; Humans ; Lymph Nodes ; Magnetic Resonance Imaging* ; Neoplasm Metastasis ; Retrospective Studies ; Sigmoidoscopy ; Urography ; Uterine Cervical Neoplasms

No abstract available.
Nipples*

The antiarrhythmic effect of oral Mexiletine was evaluated by Holter monitoring on 10 subjects with chronic high-frequency ventricular premature complexes and ventricular tachycardia referred to our cardiology clinic of Severance Hospital from June, 1982 through September, 1983. The frequency of the ventricular premature complexes and the ventricular tachycardia was measured by 24-hour ambulatory electrocardiography on each patient before and during the administration of Mexiletine(450-600 mg/day). The results were as follows : 1) In 10 patients with ventricular tachycardia total suppression of ventricular tachycardial was demonstrated in 8 patients during the administration of oral Mexilletine. 2) The number of the ventricular premature complexes was reduced markedly in 6 out of the 10 patients. 3) Side effects occurred in 5 out of 10 patients. These include tremor, weakness, dry mouth, indigestion, anorexia, chest discomfort, and dizziness but were tolerated except in one.
Anorexia ; Arrhythmias, Cardiac* ; Cardiology ; Dizziness ; Dyspepsia ; Electrocardiography, Ambulatory* ; Humans ; Mexiletine* ; Mouth ; Tachycardia, Ventricular ; Thorax ; Tremor ; Ventricular Premature Complexes

The development of immuohistochemistry and the application of electron microscopy have revolutionized our understanding of the pathopysiology of pituitart adenoma. The clinical value of functional characterization of pituitary adenoma has been realized. Immunohistochemical stains using polyclonal antibodies to six pituitary hormones (GH, PRL, ACTH, TSH, FSH & LH) were performed to classify the pituitary adenoma and to investigate the relationship between the results of the immunohistochemical study and pared to the serum hormone level. The results are summarized as follows: The Most common clinical type of pituitary adenoma was prolactinoma and the second was nonfunctioning adenoma. However, the most common immunohistological type of pituitary adenoma was null cell adenoma, the second one, lactotrope adenoma and the third one, mixed sommatotrope & lactotrope adenoma. In the clinically nonfunctioning adenoma cases, null cell adenoma were present in 75%; gonadotrope adenoma and corticotrope adenoma were present in 25%, while the serum prolactin level was increased in ten of the twenty cases(50%) of the null cell adenoma. When the serum prolactin level was increased above the 150ng/ml, the tumor cells gave positive reactions in 95.2% of cases immunohistochemically. But in the cases of GH, FSH & LH, the tumor cells gave positive reactions in 100%, 75%, and 66.7%, respectively. In the case of increased serum prolactin level, more than 50% and 30% proportion of tumor cells showed positive reactions in the micro- and macroadenoma, respectively.
Adenoma

The incidence and risk factors for hypercalciuria were studied in 23 sick preterm (Group I), 36 well preterm (Group II), 16 sick term(Group III)and 41 well term(Group IV) neonates who were admitted to NICU and nursery of Ewha Woman's University Hospital from May 1988 to February 1992. The results were as follws: 1) The incidences of hypercalciuria were 73.9% in sick preterm (Group I) and 56.3% in sick term (Group III) which were significantly higher than 13.9% of control preterm (Group II) and 7.3% of control term (Group IV). Maximal urinary Ca/Cr ration were 0.63+/-0.503 in group I and 0.50+/-0.513 in group III, significantly higher than 0.19+/-0.142 of control term and 0.17+/-0.131 of control term. 2) In sick neonates with hypercalcuria, birth wight and gestational age were significantly lower and the frequencies of frosemide and intravenous calcium therpy were significantly higher than those of sick neonates without hypercalciuria. 3) In sick neonates, furosemide increased the incidence of hypercalciuria to 90.9%, significantly higher than 57.1% in neonates without furosemide. Maximal urine Ca/Cr ratio 24 hour urine calcium were also significantly higher in neonates with furosemide than those of neonates without furosemide. 4) In sick neonates, intravenous calcium gluconate increased the incidence of hypercalciuria to 86.6%, significantly higher than 54.2% in neonates without intravenous calcium. Maximal urine Ca/Cr ratio and 24 hour urine calcium were also significantly higher in neonates treated with IV calcium than those of neonates without IV calcium. 5) Calcium intake and maximal random urine Ca/Cr ratio were positively correlated (r=0.46, p=o.037). In conclusion, the majority of sick newborns in our intensive care unit were hypercalciuric. Sick condition, premature, furosemide and intravenous calcium gluconate were the risk factors that could lead to hypercalciuria. Use of these agents in sick neonates especially preterm neonates requires careful monitoring of urine calcium excretion.
Calcium ; Calcium Gluconate ; Furosemide ; Gestational Age ; Humans ; Hypercalciuria* ; Incidence ; Infant, Newborn* ; Intensive Care Units ; Nurseries ; Parturition ; Risk Factors

No abstract available.
Amenorrhea* ; Cytogenetics* ; Female

No abstract available.
Amenorrhea* ; Cytogenetics* ; Female

No abstract available.
Gentamicins* ; Humans ; Infant, Newborn*

Psoriasis is one of the relatively common cutaneous disorders, affecting 0.1% to 3.0% of the general population in the world. However, it is recorded that the disease is characterized by its highly variable clinical manifestations and incidence influenced by the racial, geographic and environmental factors. There is a dearth of information for the incidence and clinical manifestations of psoriasis, with the exception of two small-scale and one questionnaire surveys in Korea. This study was aimed to investigate the clinical manifestations and clinic incidence of psoriasis and was based on analysis of 301 psoriatics seen between January, 1978 and August, 1981 (3 years and 8 months) at the Department of Dermatology, Seoul National University Hospital. The results were summarized as follows; 1. In this series of 301 patients, 50.5%(152) were male and 49.5%(149) were female. No significance was attached to the sex preponderance. More than three quarters were aged between 20 and 29 years. 2. The mean age of onset in male was 25.7 years and in female it was 23.0 years, indicating a slightly earlier onset in female. The peak age of incidence in male was between 20 and 29 years and in female, between 10 and 19 years. 3. The mean duration of t.he diseases for the total sample was 7.9 years.
Female ; Male ; Humans ; Incidence