1.A Case of Epidermolytic Keratosis Palmaris et Plantaris.
Dae Sung LEE ; Guk Joo CHOI ; Young Hwan KIM ; Eun Joo SEO ; Won HOUH
Korean Journal of Dermatology 1985;23(5):678-681
Epidermolytic keratosis palmaris is a rare disease which shows clinical findings of Unna Thost keratoderma and histopathologic of epidermolytic hyperkeratosis. We report herein a case of epidermolytic keratosis palmaris et plantaris in a 16-month-old female baby. Light microscopy shows marked hyperkeratosis, large irregular keratohyalin granules, and large clear spaces in the granular and upper spinous layers. Eletron microscopic findings shows that the clear spaces are areas of cytoplasm filled with a fibrillar material and cellular organelles. Abnormal clumping of tonofilament and keratohyalin is also present.
Cytoplasm
;
Female
;
Humans
;
Hyperkeratosis, Epidermolytic
;
Infant
;
Intermediate Filaments
;
Keratoderma, Palmoplantar*
;
Keratosis*
;
Microscopy
;
Organelles
;
Rare Diseases
2.Scrotal Arteriovenous Malformation.
Seock Hwan CHOI ; Joo Hwan LEE ; Dong Ja KIM ; Sung Ryong CHO
Korean Journal of Urology 2005;46(8):873-875
Arteriovenous malformation (AVM) of the scrotum is a rare vascular lesion, which is distinguished histologically by ambiguous vessels displaying both arterial and venous characteristics and abnormal muscularization of variable sized ectatic vessels. Complete excision is recommended as a definitive treatment. Here, a case of arteriovenous malformation involving the scrotal vessels is reported.
Arteriovenous Malformations*
;
Scrotum
3.A Case of Multiple Dermatofibromas in a Healthy Adult.
Ki Sung KIM ; Joo Won KIM ; Hyun Chul CHOI ; Il Hwan KIM ; Hae Jun SONG ; Chil Hwan OH
Annals of Dermatology 2000;12(3):199-201
Multiple dermatofibromas are rare and some case reports show this disease has been related to generalized defective immune function: autoimmune disease and altered immunity, such as AIDS and systemic lupus erythematosus(SLE), can be treated with immunosuppressive agents. But there are no specific reports of this disease developing in healthy people. We describe a case of multiple dermatofibromas in a 38-year-old healthy man who showed no abnormality of the immune function.
Adult*
;
Autoimmune Diseases
;
Histiocytoma, Benign Fibrous*
;
Humans
;
Immunosuppressive Agents
4.Xanthogranulomatous Pyelonephritis in a Child.
Seock Hwan CHOI ; Joo Hwan LEE ; Sung Ryong CHO
Korean Journal of Urology 2005;46(11):1231-1234
Xanthogranulomatous pyelonephritis (XGP) is a rare, severe, chronic infection of the kidney resulting in the normal renal parenchyma being replaced by characteristic lipid-laden macrophages (foam cells). It may occur at any age but is extremely rare in children. Correct pre-operative diagnosis is essential for appropriate surgical approach. We report a case of diffuse XGP in a 6-year-old boy which was pre-operatively diagnosed as XGP.
Child*
;
Diagnosis
;
Humans
;
Kidney
;
Macrophages
;
Male
;
Pyelonephritis, Xanthogranulomatous*
5.Factors Predicting the Prolonged Duration of Off-treatment in Intermittent Androgen Deprivation of Prostate Cancer Treatment.
Joo Hwan LEE ; Joo Eui HONG ; Han Yong CHOI
Korean Journal of Urology 2002;43(5):380-385
PURPOSE: The goal of intermittent androgen deprivation (IAD) therapy in prostate cancer patients is to delay the disease progression and improve the survival rate. Therefore, the duration of off-treatment is very important for the effective treatment outcome of IAD. We analyzed factors that influence the duration of off-treatment in IAD. MATERIALS AND METHODS: We reviewed the medical records of 45 patients with prostate cancer who had completed at least 1 cycle of IAD. Uni- and multi-variate tests were used to determine the factors, which are predictive to the duration of off-treatment. These factors included: the patient's age, biopsy Gleasons score, initial PSA, presence of bone metastasis, PSA levels at 3 months following on-treatment and at 3 months following off-treatment, and the duration of on-treatment. RESULTS: The average follow up duration was 34 months (15-71 months). The average off-treatment duration of each cycle was 11.1 (4-40), 7.5 (4-14), and 5.6 (3-10) months for the 1st, 2nd and 3rd cycles, respectively. Independent factors associated with the extension of duration of off-treatment, by univariate tests, included: initial PSA value, PSA values at 3 months following on-treatment, PSA at 3 months following off- treatment, and duration of on-treatment. The duration of off-treatment was inversely related to the serum PSA level at the start, 3 months following on-treatment, and 3 months following off-treatment, while it was directly related to the duration of on- treatment by multivariate tests. CONCLUSIONS: The pretreatment serum PSA level and the serum PSA level at 3 months following on-treatment and off-treatment were valuable predictors for the duration of off-treatment in IAD.
Biopsy
;
Disease Progression
;
Follow-Up Studies
;
Humans
;
Medical Records
;
Neoplasm Metastasis
;
Prostate*
;
Prostate-Specific Antigen
;
Prostatic Neoplasms*
;
Survival Rate
;
Treatment Outcome
6.Ischemic Stroke in Children: Analysis of Risk Factors.
Yeun Joo CHOI ; Joo Hyung KANG ; Sung Hwan KIM
Journal of the Korean Child Neurology Society 2002;10(2):262-272
PURPOSE: This paper evaluate and classified the risk factors that could possibly cause ischemic stroke in children, and investigate whether TOAST classification could be applied to the ischemic stroke in children. METHODS: From March 1995 to February 2002, we retrospectively reviewed the medical record of 87 patients under the age 16 who had been registered to the Ajou Stroke Registry. We evaluated the risk factors of ischemic stroke according to the Ajou Stroke Registry Protocol, and classified the risk factors into 6 main subgroups. In addition, the risk factors were investigated according to the age distribution. TOAST classification had been applied to children with ischemic stroke. RESULTS: There was 64 ischemic stroke(73.6%) and 23 hemorrhagic stroke(26.4%) among the 87 patients. In children with ischemic stroke, there was three major peak age; 13 patients younger than 1 year old(15.3%), 26 patients in age 5 to 8 years old(40.6 %), 22 patients in 9 to 12 years old(34.3%). Vasculopathy(48.6%) was the most common risk factor of the ischemic stroke in this study. Other important risk factors in order of frequency were hypertensive encephalopathy(12.5%), infectious disease(7.8%), metabolic disease(7.8%), and hematologic disease(6.2%). Moyamoya disease was the most common cause of ischemic stroke due to vasculopathy. If we analyze the risk factors according to the age at the presentation of ischemic stroke, 90% of the ischemic stroke due to vasculopathy had been developed after 5 years of age. However, ischemic stroke due to infectious disease had been developed less than 4 years of age. Major stroke was the most common subtype of the ischemic stroke in children, but TIA had been found in 80% of the patients with ischemic stroke due to moyamoya disease. TOAST classification determined the subtype of the ischemic stroke only in 2 children. Risk factors of ischemic stroke in the remained 62 patients were extremely variable, and could not be applicable to the TOAST classification. CONCLUSION: Risk factor of ischemic stroke were found in the 90% of patients. Although risk factors of ischemic stroke were extremely variable in children, cerebral vasculopathy including moyamoya disease was the most common. However, inherited metabolic disorder, coagulopathy, and hypertensive encephalopathy were also relatively common risk factors of ischemic stroke especially in children older than 5 years old. Therefore, we must extensively evaluate all the possible risk factors of ischemic stroke in children. TOAST classification could not be applicable in children because the risk factors of ischemic stroke were extremely variable.
Age Distribution
;
Child*
;
Child, Preschool
;
Classification
;
Communicable Diseases
;
Humans
;
Hypertensive Encephalopathy
;
Medical Records
;
Moyamoya Disease
;
Retrospective Studies
;
Risk Factors*
;
Stroke*
7.A study on the radiopacity of cavity lining materials for posterior composite resin restoration.
Korean Journal of Oral and Maxillofacial Radiology 2000;30(4):243-248
PURPOSE: The aim of this study was to determine the relative radiopacities of cavity lining materials (Resin-modified Glass Ionomer cement, Compomer and Flowable resin) for posterior composite resin restoration. MATERIAL AND METHODS: Resin-modified glass ionomer cement (Fuji II LC, Vitrebond(TM)), Compomers (Dyract , Compoglass, F2000, Dyract(R) flow Compoglass Flow) and Flowable resins (Tetric(R) flow, Aeliteflo(TM) Revolution(TM)) were used. Five specimens of 5mm in diameter and 2mm thick were fabricated with each material. Human molars were horizontally sectioned 2mm thick to include both enamel and dentin. The radiopacities of enamel, dentin, cavity lining materials, aluminum step wedge were obtainded from conventional radiograph and NIH image program. RESULTS: All the tested lining materials showed levels of radiopacity the same as or greater than that of dentin. All compomer tested (Dyract(R), Compoglass, F2000, Dyract(R) flow, Compoglass Flow) and Vitrebond(TM), Tetric(R) flow were more radiopaque than enamel. The radiopacities of Fuji II LC and Revolution(TM) were between enamel and dentin and resin-modified glass ionomer cement, Compomer and Tetric(R) flow were greater than those of Revolution(TM), Aeliteflo(TM) or dentin. The level of radiopacity of the tested materials was variable; those with low radiopacity should be avoided in class II restorations, where a clear determination of recurrent caries by the examining clinician could be compromised. CONCLUSON: Clinician should be able to distinguish these cavity lining materials radiographically from recurrent decay, voids, gaps, or other defects that lead to clinical failure. Utilization of materials ranked more radiopaque than enamel would enable clinicians to distinguish the lining material from tooth structure.
Aluminum
;
Compomers
;
Dental Enamel
;
Dentin
;
Glass Ionomer Cements
;
Humans
;
Molar
;
Tooth
8.Two Cases of Solitary Leiomyoma Cutis.
Kyung Hwan CHO ; Guk Joo CHOI ; Baik Kee CHO ; Won HOUH
Korean Journal of Dermatology 1981;19(6):939-943
Leiomyoma Cutis is an unusual benign tumor of smooth muscle derivecl either from the arrector pili muscle, from the media of blood vesseles, or from smooth muscles of scrotum, labia or nipple. Two casea of leiomyoma cutis confirmed by H&E stain and Massons stain is presented, one with lesion on the left thigh and the ather with lesion of the left ankle. The first case was a 49 year-old female with solitary pinhead sized subcutaneous firm mass with intermittent pain and tenderess for 10 months, The second case waa a 36 year-old female with painful solitary peanut sized firm nodule which had pinkish center of 1 year duration.
Adult
;
Ankle
;
Blood Vessels
;
Female
;
Humans
;
Leiomyoma*
;
Middle Aged
;
Muscle, Smooth
;
Nipples
;
Scrotum
;
Thigh
9.A Case of Niemann Pick Disease.
Sung Hwan KIM ; Young Joo CHOI ; In Ho KIM ; Sang Woo KIM
Journal of the Korean Pediatric Society 1983;26(10):1039-1043
No abstract available.
Niemann-Pick Diseases*
10.Diagnostic and Clinical Implications of Echocardiography in Staphylococcal Endocarditis.
Kyu Chul CHOI ; Hyo Sup JOO ; Ook Jung KANG ; Kyoo Hwan RHEE ; Chang Il AHN
Journal of the Korean Pediatric Society 1984;27(1):43-49
No abstract available.
Echocardiography*
;
Endocarditis*