Clinically, benign juvenile melanoma (BJM) is a benign nevus-cell tumor and arise predominantly in children. The lesion usually is solitary and is encountered most commonly on the face and extremities. In most mstances the lesion consists of a dome-shaped, srnall nodule. The histoIogic picture often closely resembles that of a maIignant melanoma and there is no doubt that prior to its recognition as an entity by Spitz in 1948 many cases were misdiagnosed as malignant melanoma. A case of benign juvenile melanoma in 23-year old male is described with brief review of literatures. Hisr.ologic pictures show considerable junctional activity. In the upper dermis edema and ectasia of the various vascular elements are present. The re:us cells are pleomorphic. They are mostly spindle-shaped and are arranged mostly in fairly well circumscribed nests. Giant cells are frequentIy observed. Melanin is scanty and mitotic figures are absent. These are typical histologic pictures of the BJM, To our knowledge, there have been no prior repots of BJM in Korea, based on our own review.
Child ; Dermis ; Dilatation, Pathologic ; Edema ; Extremities ; Giant Cells ; Humans ; Korea ; Male ; Melanins ; Melanoma* ; Young Adult

The warts are benign skin tumors caused by virus, most frequently seen in childhood, and have atendency to regress before reaching adulthood. Various articles have been suggested that wart involution may be involved with immune response of the host, but definite mechanism has not been found. The author studied the tuberculin sensitivities of the wart patients in order to evaluate immune responses of the hosts, and observed the course of the warts after BCG vaccination to the patients for the facilitation of nonspecific immune reaction of the hosts. The results are as follows; 1. Tuberculin positivity was not decreased, however the sensitivity to the tuberculin was decreased among the wart patients than the non-wart groups. 2. No significant difference was observed between the numbers of wart and the degrees of tuberculin sensitivity. R. BCG vaccination was promoted the invotution of warts without valuable changes of the tuberculin sensitivities.
Humans ; Mycobacterium bovis* ; Skin ; Tuberculin* ; Vaccination* ; Warts*

Human wart diseases are benign skin tumors caused by viruses of the papova group which usually affect children and almost always regress until adulthood. Various therapeutic modalities have been tried for the treatment of warts, however there is no single satisfactory method and the clinical course as well as the prognosis is always variable. The spontaneous regression of warts may represent an increase in the activity of host immune responses. Recent studies have tended to confirm that serum antiviral antihodies and cellular immune responses occur in relation to regression of warts, but there is no convincing evidence of a correlation between the appmrance of immune responses and resolution of the warts. BCG and some of similar extra,cts have becn known to be capable of initiating a wide range of non-specific immune reactions to cancerous diseases. The aim of the present investigation has been to study no-specific irnmune response of Tubercin-3 in patients with svarts, based on the findings that RCG and some of similar extracts were found to be a potent reticuloendothelial stimulant. Taventy casee attending a, dermatolo-ical out-ptient department consists of eight verrua plana juvenilis, seven verruca vulgaris, one verruca plxntaris and four molluscurn contagiosum were trezted with Tubercin-R. The results revealed complete cure in six(37. 5.) and clinical improvemeat in nine. (56. %) of sixteen cases of various warts, and one of four czses of molluscum contagiosurn showed a slight decrea,se in size and nu!nber of the lesions. There is no eviclence of a correlation among the age of patient, type of verruca and therapeutic effect. On the basis of our findings, we can state that non-specific immune response of BCG .and some of similar extracts may be facilitate the involution of warts. The relationship of thes immune respons to the involution of warts clezrly require further study.
Child ; Humans ; Immunity, Cellular ; Mycobacterium bovis ; Prognosis ; Skin ; Warts*

Dysregulation of TGF-beta that is a modulator of cell growth and differentiation can result in uncontrolled growth and tumor formation. Monitoring these pattern of genes and protein expression during tumor development will provide a basis for understanding normal growth and distortion of osteochondrogenesis. Our comparative studies on the experssion of TGF-beta protein indicate that TGF-beta may primarily be a regulator of epithelial differentiation during tooth development (between 4 weeks and 40 gestational weeks) and tumorigenesis of odontogenic neoplasm (ameloblastoma). In early human tooth germ (cap/early bell stage) TGF-beta protein was found in the epithelial dentallamina and enamel orgen. TGF-beta experessions were seen in inner and outer dental epithelium during bell stage. During enamel and cementum appositional stage, TGF-beta expression shifted from the ameloblast to the odontoblast. In eruption stage, TGF-beta expressions look like moderate positive pattern in odontoblast and rare pattern in enamel, dentin and cementum. TGF-beta expressions of follicular and plexiform amelobalstoma are moderate positive reaction in ectodermal tumor components and mild positive in vessels of stroma tissue. In acanthomatous type, TGF-beta expression was shown severely positive finding in stellate reticulum cell. TGF-beta expressions were noted moderate reaction in margin of tumor epithelium and stellate reticulum cell of granular ameloblastoma. In unicystic ameloblastoma, TGF-beta expression was rare feature in cystic luminal epithelium. With these result, I should be suggested that TGF-beta may play an important role in epithelial-mesenchymal interactions in human tooth morphogenesis and development of odontogenic epithelial tumors.
Ameloblastoma* ; Ameloblasts ; Carcinogenesis ; Dental Cementum ; Dental Enamel ; Dentin ; Ectoderm ; Embryonic Structures* ; Epithelium ; Fetus* ; Humans* ; Morphogenesis ; Odontoblasts ; Phenobarbital ; Reticulum ; Tooth Germ* ; Tooth* ; Transforming Growth Factor beta*

No abstract available.
Ear Cartilage ; Rabbits ; Transplants

PURPOSE: Hypoxic-ischemic encephalopathy is a major neurologic problem and one of the most important perinatal causes of neurological morbidity. Evaluation of the presence, extent, and subsequent evolution of hypoxic-ischemic lesions may be very important. We studied the significance of imaging modality through the analysis of brain MRI findings of hypoxic-ischemic encephalopathy during neonatal period and comparison with findings of brain ultrasonography. METHODS: We analysed the forty-seven infants retrospectively who were diagnosed as hypoxic-ischemic encephalopathy and underwent brain MRI and ultrasonography from Jan. 1992 to May 1996. RESULTS: 1) The mean gestational age and birth weight of the twenty-seven infants who were premature were 32.8+/-2.08weeks and 1.97+/-0.44kg respectively. The mean gestational age and birth weight of twenty infants who were fullterm were 39.3+/-1.04weeks and 2.98+/- 0.93kg respectively. The primary hypoxic-ischemic insults occurred during antenatal, intrapartum and postnatal period. 2) The findings of brain MRI were classified into periventricular leukomalacia, encephalomalacia, basal ganglia lesion, focal parenchymal hemorrhage, ventriculomegaly without other lesion and normal finding. 3) Three infants among twenty-five infants with periventricular leukomalacia, four infants among seven infants with basal ganglia lesion and six infants among seven infants with focal parenchymal hemorrhage were not diagnosed by brain ultrasonography. 4) All of ten infants with encephalomalacia and four infants with ventriculomegaly without other lesion were diagnosed by brain ultrasonography. CONCLUSIONS: MRI can diagnose the hypoxic-ischemic lesions which would not be possible by brain ultrasonography. Therefore MRI is the imaging modality of choice for diagnosis in infants with hypoxic-ischemic encephalopathy. We believe that the benefits of MRI outweigh its somewhat higher cost, lack of portability and monitoring difficulties.
Basal Ganglia ; Birth Weight ; Brain ; Diagnosis ; Encephalomalacia ; Gestational Age ; Hemorrhage ; Humans ; Hypoxia-Ischemia, Brain* ; Infant ; Infant, Newborn ; Leukomalacia, Periventricular ; Magnetic Resonance Imaging* ; Retrospective Studies ; Ultrasonography

PURPOSE: Hypoxic-ischemic encephalopathy is a major neurologic problem and one of the most important perinatal causes of neurological morbidity. Evaluation of the presence, extent, and subsequent evolution of hypoxic-ischemic lesions may be very important. We studied the significance of imaging modality through the analysis of brain MRI findings of hypoxic-ischemic encephalopathy during neonatal period and comparison with findings of brain ultrasonography. METHODS: We analysed the forty-seven infants retrospectively who were diagnosed as hypoxic-ischemic encephalopathy and underwent brain MRI and ultrasonography from Jan. 1992 to May 1996. RESULTS: 1) The mean gestational age and birth weight of the twenty-seven infants who were premature were 32.8+/-2.08weeks and 1.97+/-0.44kg respectively. The mean gestational age and birth weight of twenty infants who were fullterm were 39.3+/-1.04weeks and 2.98+/- 0.93kg respectively. The primary hypoxic-ischemic insults occurred during antenatal, intrapartum and postnatal period. 2) The findings of brain MRI were classified into periventricular leukomalacia, encephalomalacia, basal ganglia lesion, focal parenchymal hemorrhage, ventriculomegaly without other lesion and normal finding. 3) Three infants among twenty-five infants with periventricular leukomalacia, four infants among seven infants with basal ganglia lesion and six infants among seven infants with focal parenchymal hemorrhage were not diagnosed by brain ultrasonography. 4) All of ten infants with encephalomalacia and four infants with ventriculomegaly without other lesion were diagnosed by brain ultrasonography. CONCLUSIONS: MRI can diagnose the hypoxic-ischemic lesions which would not be possible by brain ultrasonography. Therefore MRI is the imaging modality of choice for diagnosis in infants with hypoxic-ischemic encephalopathy. We believe that the benefits of MRI outweigh its somewhat higher cost, lack of portability and monitoring difficulties.
Basal Ganglia ; Birth Weight ; Brain ; Diagnosis ; Encephalomalacia ; Gestational Age ; Hemorrhage ; Humans ; Hypoxia-Ischemia, Brain* ; Infant ; Infant, Newborn ; Leukomalacia, Periventricular ; Magnetic Resonance Imaging* ; Retrospective Studies ; Ultrasonography

Parkinsonism is a very rare complication of phenytoin. The authors experienced a 71-year-old man who presented progressive cognitive decline, postural tremor, bradykinesia and gait disturbance. Laboratory test and brain imaging revealed no abnormality that commonly causes parkinsonism. The only abnormal finding was elevation of serum phenytoin above the therapeutic level. The patient showed marked improvement of symptoms by reduction of phenytoin dosage. Here we report a case of phenytoin induced parkinsonism.
Aged ; Gait ; Humans ; Hypokinesia ; Neuroimaging ; Parkinsonian Disorders ; Phenytoin ; Tremor

The origin of Paget cells in extramammary Pagets disease is uncertain, however, some ultrastructural surveys revealed differentistion of Paget cells toward sweat gland apparatus. This is supported by recent immunohistochemical studies that Paget cells are irnmunohistochemically shown to react with antikeratin monoclonal antibodies specific to simple epithelia. In this siudy, seven cases of extramammary Pagets disease were immunohistochemically investigated with adenokeratin, carcinoembryonic antigen(CEA), involucrin by peroxidase-antiperoxidase(PAP) techniques. The results were as follow : l. Epidermis, hair follicies and sebaceous glands revealed negative immunoreacativity for adenokeratin in all cases. Sweat glands(6/7), Paget cells(6/7) and underlying adenocarcinoma revealed positive immunoreactivity for adenokeratin. 2. Epidermis, hair follicles and sebaceous glands(6/7) revealed negative immunoreactivity for CEA. Sweat glands, Paget cells and underlying adenocarcinoma revealed positive immunoreactivity for CEA in all cases. 3. Lower epidermis, sweat glands(6/7), Paget cells and underlying adenocarcinorna revealed negative irnmunoreactivity for involucrin. Upper epidermis, hair follicles and sebaceous glands(5/7) revealed positive immunoreactivity far involucrin. Based on these results, Paget cells of extramammary Pagets disease are considered to be derived from the sweat glands.
Adenocarcinoma ; Antibodies, Monoclonal ; Carcinoembryonic Antigen* ; Epidermis ; Hair ; Hair Follicle ; Paget Disease, Extramammary* ; Sebaceous Glands ; Sweat ; Sweat Glands

The key points of treatment of cryptotia are the elevation of invaginated ear helix and the correction of deformed cartilage. Prevention of stabilized cartilage contouring from returning to the previous state is also important. The authors carried cartilage plasty by modified Fukuda's method that several incisions are made along the crus, and then the crus is flattened using mattress suture in cases of mild cartilage deformity. In cases of severe cartilage deformity, the cartilage plasty by Onizuka method was carried. The cartilage graft from cavum on concha served as a splint for prevention of recurrence of cartilage deformities. We have repaired 13 cryptotic deformities in 9 patients with aesthetically satisfactory results using vertical incision at the superior crus of antihelix with mattress suture or cartilage graft from cavum of concha for cartilage correction.The correction of deformed cartilage by modified Fukida or Onizuka method is a good option for the treatment of cryptotia.
Cartilage ; Congenital Abnormalities ; Ear ; Humans ; Recurrence ; Splints ; Sutures ; Transplants