1.Clinical study on early colorectal cancer.
Shang Kyun RHO ; Jung Kil CHANG ; Seong Dai PARK
Journal of the Korean Surgical Society 1991;41(6):765-775
No abstract available.
Colorectal Neoplasms*
2.Reappraisal of Delorme's procedure for rectal prolapse.
Sung Yong YOON ; Joong Kil CHANG ; Seong Dai PARK
Journal of the Korean Surgical Society 1993;44(6):875-880
No abstract available.
Rectal Prolapse*
3.Modified Anal Cushion Preserving Hemorrhoidectomy.
Journal of the Korean Society of Coloproctology 2000;16(5):293-295
PURPOSE: The ligation and excision method of hemorrhoids is a simple and rapid procedure, but it has a drawback of possible damage to the anal cushion. To solve this problem, we tried to preserve the anal cushion with superficial ligation and excision method of anorectal mucosa including removal of the hemorrhoidal tissues from the anal cushion after submucosal dissection. However, it was difficult to remove hemorrhoidal vessels with this procedure and it was time consuming. To minimize these problems, we originally tried a new cushion preserving procedure in 15 patients during 1 year. METHODS: R> After mobilization of the anorectal mucosa, hemorrhoidal tissues and anal cushion from the anal sphincter muscles, the anorectal mucosa was first dissected from the anal cushion, then the hemorrhoidal vessels were removed and the remaining anal cushion was reattached to the anal sphincter muscles. RESULTS: The results of this surgery have been satisfactory with only one postoperative bleeding and two anal skin tags. CONCLUSIONS: This method is simple and convenient for preservation of anal cushion with minimal complications when compared with the conventional method of anal cushion preservation.
Anal Canal
;
Hemorrhage
;
Hemorrhoidectomy*
;
Hemorrhoids
;
Humans
;
Ligation
;
Mucous Membrane
;
Muscles
;
Skin
4.Spatio-Temporal Pattern Analysis in EEG of Alzheimer's Dementia: A Preliminary Report Using Karhunen-Loeve Method for Clinical Implication.
Hyo Jin GO ; Hyung Rae KIM ; Dai Jin KIM ; Soo Yong KIM ; Seong Jong PARK
Journal of Korean Neuropsychiatric Association 2000;39(2):402-411
OBJECTIVES: We introduce a novel analysis method of spatio-temporal pattern analysis of EEG. Using it, we presents a results discriminating severe Alzheimer's disease patients from normal subjects. METHOD: To the groups of 10 Alzheimer's disease patients and 10 normal aged subjects, we applied the Karhunen-Loeve decomposition method and observed their principal patterns and time-varying dynamics. RESULTS: First, there was a first primary pattern of the eigenvector in Alzheimer's disease patients that showed opposite polarities at the left and the right hemispheric regions. Second, the Alzheimer's disease patients had significantly different average values of the eigenvector at the left parieto-temporal area than the normal controls did. Third, some Alzheimer's disease patients had one, coherent frequency component in the Fourier amplitude spectrum of the first pattern expansion coefficient. CONCLUSION: Our results suggest that the pathophysiologic site of Alzheimer's dementia may be left temporo-parietal area in brain and further studies need to evaluate whether the spatio-temoral pattern analysis could be used to diagnose Alzheimer's dementia patients.
Alzheimer Disease
;
Brain
;
Dementia*
;
Electroencephalography*
;
Humans
5.Study on the Development of Efficient Vitrification of Human Blastocysts.
Sang Min LEE ; Ju Hee LEE ; Sang Won LEE ; Seoung Min LEE ; San Hyun YOON ; Jin Ho LIM ; Huem Dai PARK ; Seong Goo LEE
Korean Journal of Fertility and Sterility 2003;30(3):241-248
OBJECTIVE: The purpose of this study was to evaluate the survival rate of vitrified blastocyst according to the freezing vessels, equilibration time in cryoprotectant and artificial dehydration method. METHODS: Human blastocysts were vitrified after loading onto the plastic straw, open-pulled straw (OPS), electron microscopy grid (EM grid) for 1.5 min or 3 min. They also were directly plunged into LN2 within 30sec. For artificial shrinkage of blastocysts, 36 gauge fine needle was pushed at the cellular junction of the trophectoderm into the blstocoele cavity until it shrank without damage of inner cell mass. RESULTS: The survival rate of vitrified blastocysts on plastic straw, OPS, EM grid as freezing vessels were 26.7, 13.0 and 60.5%, respectively. The survival rate of EM grid was significantly higher than that of plastic straw and OPS (p<0.05). For 1.5 min equilibrium, the survival rates of early blastocyst (EB), middle blastocyst (MB) and late blastocyst (LB) were 64.4, 81.0, and 20.0% respectively. For 3 min equilibrium, the survival rates of EB, MB, and LB were 69.9, 50.0 and 57.5% respectively. The survival rates of EB and MB were significantly higher than that of LB in 1.5 min equilibrium group (p<0.05), however, the significance was not observed in 3 min equilibrium groups. In cytoplasmic shrinkage before vitrification, the survival rates of EB, MB and LB were 92.9, 100 and 75.9% respectively. The survival rate of MB was significantly higher than that of LB (p<0.05). The survival rates of vitrified blastocysts by artificial dehydration and slow-frozen blastocysts were not significantly different as 88.9 and 66.7%, respectively. CONCLUSION: This study showed that the vitrification of human blastocysts using EM grid and artificial dehydration is an effective method. Therefore, these methods would be an useful techniques for blastocyst cryopreservation.
Blastocyst*
;
Cryopreservation
;
Cytoplasm
;
Dehydration
;
Freezing
;
Humans*
;
Microscopy, Electron
;
Needles
;
Plastics
;
Survival Rate
;
Vitrification*
6.Socio-medical Study on Gonorrhoea with Special References of Prevalence, PPNG and Antibiotic Resistance.
Seong Ho LEE ; In Dam HWANG ; Young Soo PARK ; Dai Ha KOH
Korean Journal of Preventive Medicine 1983;16(1):41-50
The incidence of sexually transmitted disease, especially gonorrhoea has risen despite the progress in its diagnosis and treatment. For the effective control programs of sexually transmitted disease, it should be required socio-medical approaches. A study on gonorrhoea and penicillinase-producing Neisseria gonorrhoea (PPNG) was conducted in Jeonju and Kunsan area from March, 1982 through August, 1982. The 221 entertrainers were studied in order to determine the prevalences of gonorrhoea and PPNG. Socio-demographic informations of the entertainers were obtained by interviewing them. Gonococci were cultured on Thayer-Martin enrichment media for isolation, and PPNG was confirmed using beta-lactamase reagent(PADAC(tm) Beta-Lactamase Test Strips, Galbiochem-Behring). The results of the study are summarized as follows; 1. The average age of the entertainers studied was 26.1+/-4.7 years. 2. The average years of working in entertaining business was 2.4+/-1.4 years, and the average income per month was 239,592+/-90,480 won. On the education level, 70.6% of the entertainers were middle or high school graduates. 3. 47.5% of the entertainers were using contraceptives. 90.5% have experienced artificial abortion. 4. 37(16.7%) out of 221 entertainers were revealed to gonorrhoea, and 13(35.1%) of gonorrhoea patients were by PPNG. 5. The prevalence rates of gonorrhoea and the proportion of PPNG by age were not significant statistically. Meanwhile, the colelations between the rates of gonorrhoea and education, frequency of love-making with customers and type of sexual partner were highly significant statistically. 6. 37 strains of gonococci isolated were almost resistant to several antimicrobial agents, especially amikacin, clindamycin and chloramphenicol. Furthermore PPNG strains were completely resistant to not only above drugs but also penicillin.
Amikacin
;
Anti-Infective Agents
;
beta-Lactamases
;
Chloramphenicol
;
Clindamycin
;
Commerce
;
Contraceptive Agents
;
Diagnosis
;
Drug Resistance, Microbial*
;
Education
;
Humans
;
Incidence
;
Jeollabuk-do
;
Neisseria
;
Penicillins
;
Prevalence*
;
Sexual Partners
;
Sexually Transmitted Diseases
7.Solitary neurofibroma of the incisive nerve: a case report and immunohistochemical study.
Hyo Sang JEON ; Dai Il SON ; Seong Gon KIM ; Mi Ja KIM ; Hye Rim PARK ; Dong Geun LEE ; Byoung Ouck CHO ; Nam Sung CHO ; Young Joo PARK
Journal of the Korean Association of Oral and Maxillofacial Surgeons 2004;30(1):56-59
The neurofibroma in oral cavity is typically associated with neurofibromatosis. The solitary neurofibroma is commonly observed in skin. It is relatively rare in oral cavity and usually observed in the tongue, buccal mucosa, and vestibule. The rare types of solitary neurofibromas have been reported as a case report and they were in the inferior alveolar nerve, infratemporal fossa, maxilla, and palatal ginviva. In our hospital, the presented case was the first case as reported as solitary neurofibroma in the oral cavity. The prognosis after excision and the review of literatures were presented.
Mandibular Nerve
;
Maxilla
;
Mouth
;
Mouth Mucosa
;
Neurofibroma*
;
Neurofibromatoses
;
Prognosis
;
Skin
;
Tongue
8.Changes in Iridocorneal Angle Configuration and Intraocular Pressure during Smartphone Use under Room Light
Seong Taik LEE ; Su Jin PARK ; Yong Koo KANG ; Jae Pil SHIN ; Dai Woo KIM ; Dong Ho PARK
Journal of the Korean Ophthalmological Society 2021;62(9):1252-1258
Purpose:
To investigate changes in intraocular pressure (IOP) and iridocorneal angle (ICA) configuration during smartphone use under room light.
Methods:
We included healthy adults aged 19-35 years with no ophthalmological abnormalities. All read text on a smartphone for 6 minutes under room light. IOP was measured via rebound tonometry at baseline and at 2, 4, and 6 minutes. ICA images were obtained via anterior segment optical coherence tomography after each IOP measurement. After 6 minutes, participants stopped reading text and rested for 2 minutes. IOP was then measured again.
Results:
The IOP significantly increased at 2, 4, and 6 minutes of reading compared to baseline (p < 0.001) but recovered to baseline after 2 minutes of rest (p = 1.000). The anterior chamber depth decreased significantly, and the anterior chamber angle width increased after 6 minutes of smartphone reading (both p < 0.05).
Conclusions
IOP increased when reading smartphone text under room light but the ICA did not change. Prolonged smartphone reading is inappropriate for a patient at risk of glaucoma or glaucoma progression. Such patients should be cautioned.
9.Changes in Iridocorneal Angle Configuration and Intraocular Pressure during Smartphone Use under Room Light
Seong Taik LEE ; Su Jin PARK ; Yong Koo KANG ; Jae Pil SHIN ; Dai Woo KIM ; Dong Ho PARK
Journal of the Korean Ophthalmological Society 2021;62(9):1252-1258
Purpose:
To investigate changes in intraocular pressure (IOP) and iridocorneal angle (ICA) configuration during smartphone use under room light.
Methods:
We included healthy adults aged 19-35 years with no ophthalmological abnormalities. All read text on a smartphone for 6 minutes under room light. IOP was measured via rebound tonometry at baseline and at 2, 4, and 6 minutes. ICA images were obtained via anterior segment optical coherence tomography after each IOP measurement. After 6 minutes, participants stopped reading text and rested for 2 minutes. IOP was then measured again.
Results:
The IOP significantly increased at 2, 4, and 6 minutes of reading compared to baseline (p < 0.001) but recovered to baseline after 2 minutes of rest (p = 1.000). The anterior chamber depth decreased significantly, and the anterior chamber angle width increased after 6 minutes of smartphone reading (both p < 0.05).
Conclusions
IOP increased when reading smartphone text under room light but the ICA did not change. Prolonged smartphone reading is inappropriate for a patient at risk of glaucoma or glaucoma progression. Such patients should be cautioned.
10.Living Donor Liver Transplantation for Advanced Hepatocellular Carcinoma with Portal Vein Tumor Thrombosis after Concurrent Chemoradiation Therapy.
Dai Hoon HAN ; Dong Jin JOO ; Myoung Soo KIM ; Gi Hong CHOI ; Jin Sub CHOI ; Young Nyun PARK ; Jinsil SEONG ; Kwang Hyub HAN ; Soon Il KIM
Yonsei Medical Journal 2016;57(5):1276-1281
Locally advanced hepatocellular carcinoma (HCC) with portal vein thrombosis carries a 1-year survival rate <10%. Localized concurrent chemoradiotherapy (CCRT), followed by hepatic arterial infusion chemotherapy (HAIC), was recently introduced in this setting. Here, we report our early experience with living donor liver transplantation (LDLT) in such patients after successful down-staging of HCC through CCRT and HAIC. Between December 2011 and September 2012, eight patients with locally advanced HCC at initial diagnosis were given CCRT, followed by HAIC, and underwent LDLT at the Severance Hospital, Seoul, Korea. CCRT [45 Gy over 5 weeks with 5-fluorouracil (5-FU) as HAIC] was followed by HAIC (5-FU/cisplatin combination every 4 weeks for 3-12 months), adjusted for tumor response. Down-staging succeeded in all eight patients, leaving no viable tumor thrombi in major vessels, although three patients first underwent hepatic resections. Due to deteriorating liver function, transplantation was the sole therapeutic option and offered a chance for cure. The 1-year disease-free survival rate was 87.5%. There were three instances of post-transplantation tumor recurrence during follow-up monitoring (median, 17 months; range, 10-22 months), but no deaths occurred. Median survival time from initial diagnosis was 33 months. Four postoperative complications recorded in three patients (anastomotic strictures: portal vein, 2; bile duct, 2) were resolved through radiologic interventions. Using an intensive tumor down-staging protocol of CCRT followed by HAIC, LDLT may be a therapeutic option for selected patients with locally advanced HCC and portal vein tumor thrombosis.
Adult
;
Carcinoma, Hepatocellular/complications/drug therapy/surgery/*therapy
;
*Chemoradiotherapy
;
Cisplatin/therapeutic use
;
Disease-Free Survival
;
Female
;
Fluorouracil/therapeutic use
;
Humans
;
Liver Neoplasms/complications/drug therapy/surgery/*therapy
;
*Liver Transplantation
;
*Living Donors
;
Male
;
Middle Aged
;
Neoplasm Recurrence, Local
;
*Portal Vein
;
Venous Thrombosis/*complications