1.Soft Tissue Perineurioma : A Case Report .
Korean Journal of Pathology 2009;43(3):266-270
Soft tissue perineurioma is a very rare tumor composed of entirely of neoplastic perineurial cells. A 54-year-old woman presented with a palpable mass in the right lower leg. The mass was excised. Grossly, the tumor measured 2.0x2.0x1.5 cm. The cut surface was well circumscribed, pale pinkish gray, and rubbery soft. Histological examination showed that the tumor was composed of spindle cells within collagenous and myxoid stroma. The tumor cells had elongated, tapering nuclei with long and thin cytoplasmic processes, and were arranged in fascicular, whorled, and storiform pattern. The tumor cells were positive for epithelial membrane antigen and collagen type IV and negative for S-100 protein. Ultrastructurally, tumor cells showed long and thin cytoplasmic processes, pinocytic vesicles, and incomplete external lamina. The diagnosis of soft tissue perineurioma was confirmed by immunohistochemical stain and ultrastructural study.
Collagen
;
Collagen Type IV
;
Cytoplasm
;
Female
;
Humans
;
Immunohistochemistry
;
Leg
;
Middle Aged
;
Mucin-1
;
Nerve Sheath Neoplasms
;
S100 Proteins
2.The Effects of Commodified Growth Factor Products on the Fibrovascularization of Porous Polyethylene Orbital Implants.
Won Mo GU ; Joon Hyuk CHOI ; Jun Hyuk SON
Journal of the Korean Ophthalmological Society 2014;55(9):1366-1371
PURPOSE: To investigate the effects of commodified growth factor products used clinically on fibrovascular ingrowth into porous polyethylene orbital implants. METHODS: Porous polyethylene orbital implant sheets (Medpor(R)) soaked with Nepidermin (Easyef(R)), Trafermin (Fiblast(R)), and normal saline were implanted into the backs of 18 Sprague-Dawley rats. The degree of fibrovascular ingrowth as observed using a light microscope was compared 1 and 2 weeks after implantation and was calculated as a percentage of the fibrovascular ingrowth length. RESULTS: One week after implantation, the percentage of fibrovascular ingrowth length was 25.33 +/- 5.43%, 22.56 +/- 5.30%, and 21.78 +/- 4.66% in the Easyef(R)-, Fiblast(R)- and normal saline-soaked groups. The degree of fibrovascularization was higher in the Easyef(R)-soaked group than in the other groups (p = 0.020, 0.012). Two weeks after implantation, the degree of fibrovascularization was 98.33 +/- 5.00%, 100.00 +/- 0.00%, and 95.89 +/- 4.57%, which was significantly higher in the Easyef(R)-, and Fiblast(R)-soaked groups than in normal saline-soaked group (p = 0.019, <0.001). CONCLUSIONS: Commodified growth factor products used in other areas selectively enhanced fibrovascular ingrowth to a greater degree and earlier in ophthalmic plastic and reconstructive surgery.
Epidermal Growth Factor
;
Fibroblast Growth Factor 2
;
Orbital Implants*
;
Plastics
;
Polyethylene*
;
Rats, Sprague-Dawley
3.Benign occipital spikes.
Joon Soo LEE ; Hye Young KANG ; Chang Jun COE ; Young Hyuk LEE
Journal of the Korean Child Neurology Society 1993;1(1):83-89
No abstract available.
4.Association Between Executive Dysfunction-Related Activities of Daily Living Disability and Clinical Dementia Rating Domain Patterns in Patients With Vascular Dementia and Age-Matched Patients With Alzheimer’s Dementia
Byoung Sun JUN ; Kyung Min KIM ; Hyun Ju YANG ; Joon Hyuk PARK
Psychiatry Investigation 2023;20(12):1126-1132
Objective:
Although the Clinical Dementia Rating (CDR) scale was originally developed to stage Alzheimer’s dementia (AD), it is now used globally for various types of dementia. The aim of this study was to investigate the characteristic pattern of CDR domains and its association with neuropsychological findings and activities of daily living (ADL) in patients with vascular dementia (VaD) and patients with AD.
Methods:
We recruited very mild to mild VaD and AD patients who were age-matched among the first visitors to a dementia clinic. All subjects underwent a standardized clinical interview, physical and neurological examinations, and laboratory tests, including brain magnetic resonance imaging, according to the protocol of the Korean version of the Consortium to Establish a Registry for Alzheimer’s Disease assessment battery.
Results:
A total of 105 pairs of VaD and AD patients participated in this study. Although the adjusted scores on Korean version of the Mini-Mental State Examination were similar between the two groups, the VaD patients performed better on the Boston Naming Test, Word List Memory, Word List Recall, Word List Recognition, and Constructional Recall Test. However, the scores on global CDR, CDR sum of boxes, and ADL-related CDR domains were higher in VaD patients than in AD patients (p<0.001). The VaD patients also showed poor performances on the Disability Assessment for Dementia Scale, Frontal Assessment Battery, Executive Clock Drawing Task, and Stroop tests.
Conclusion
Despite similar general cognitive function and better memory function, patients with VaD tend to be staged as severer dementia on the CDR scale than patients with AD because of more impaired ADL associated with executive dysfunction.
5.Angioleiomyoma of the Nasal Septum: A Case Report.
Joon Hyuk CHOI ; Jun Mo KIM ; Yong Dae KIM
Yeungnam University Journal of Medicine 2008;25(2):154-159
Angioleiomyoma of the sinonasal tract is a rare benign tumor. We report a case of angioleiomyoma of the nasal septum in a 51-year-old woman who complained of frequent epistaxis for 3 months. Surgicalexcision was performed. The excised specimen was 0.7 x 0.5 x 0.4 cm in size, well circumscribed, grayish white, rubbery, and soft. Histological examination showed thick-walled blood vessels and smooth muscle cell proliferation. No nuclear atypia or mitoses were present.
Angiomyoma
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Blood Vessels
;
Epistaxis
;
Female
;
Humans
;
Middle Aged
;
Mitosis
;
Myocytes, Smooth Muscle
;
Nasal Cavity
;
Nasal Septum
6.Comparision of Osseointegration Depending on Surface Treatment.
Ha Jun HWANG ; Joon Bong PARK ; Young Hyuk KWON ; Yeek HERR
The Journal of the Korean Academy of Periodontology 2004;34(4):699-709
The present study was performed to evaluate histomorphological difference in various surface-treated implants in beagle. Implants(Implantium(R), Dentium Co. Korea) with pure titanium machined surface, acid treated surface, and Al2O3(50~100micrometer)blasted with acid treated surface were used in this study. All mandibular premolars of 1.5~2 year old male beagle dogs were extracted. At 3 months after extraction, the implants(phi 4mm, l6mm) were installed. The beagle were sacrificed at 1, 3 months after installation and then tissues including implants were prepared for non-decalcified specimens. These specimens were analyzed comparatively under light microscope. The results of this study were as follow 1. Higher rate of osseointegration were showed in the Al2O3(50~100micrometer)blasted with acid-treated surface. 2. Increased osseointegration were showed in the Al2O3(50~100micrometer)blasted with acidtreated surface with time. 3. Higher maturation of integration were showed in the Al2O3(50~100micrometer)blasted with acid-treated surface. In conclusion, surface treatment of Al2O3blasted with acid might be considered to shorten healing time and improve success rate as increasing contact of implant and bone.
Animals
;
Bicuspid
;
Dogs
;
Humans
;
Male
;
Osseointegration*
;
Titanium
7.Urticaria Pigmentosa Mimicking Multiple Lentigine-like Brownish Macules in a 22-Month-Old Boy.
Joon Hyuk SUH ; Kui Young PARK ; Seong Jun SEO
Journal of Korean Medical Science 2017;32(6):885-886
No abstract available.
Humans
;
Infant*
;
Male*
;
Urticaria Pigmentosa*
;
Urticaria*
8.A Clinical Study on the Ovarian Tumors in Pregnancy.
Yong Gul KIM ; Tae Jung KIM ; Hyun Jung LIM ; Sang Joon CHOI ; Chang Hun SONG ; Sei Jun HAN ; Hyuk JUNG
Korean Journal of Perinatology 2001;12(1):35-43
No abstract available.
Pregnancy*
9.Tinea Capitis Caused by Microsporum canis after Visiting a Pet Café in a Sibling.
Hyun Jung KWON ; Joon Hyuk SUH ; Nam Ju MOON ; Jong Soo CHOI ; Kui Young PARK ; Sung Jun SEO
Korean Journal of Dermatology 2017;55(9):626-627
No abstract available.
Humans
;
Microsporum*
;
Siblings*
;
Tinea Capitis*
;
Tinea*
10.Acute Physiologic and Chronic Health Examination II and Sequential Organ Failure Assessment Scores for Predicting Outcomes of Out-of-Hospital Cardiac Arrest Patients Treated with Therapeutic Hypothermia.
Sung Joon KIM ; Yong Su LIM ; Jin Seong CHO ; Jin Joo KIM ; Won Bin PARK ; Hyuk Jun YANG
Korean Journal of Critical Care Medicine 2014;29(4):288-296
BACKGROUND: The aim of this study was to assess the relationship between acute physiologic and chronic health examination (APACHE) II and sequential organ failure assessment (SOFA) scores and outcomes of post-cardiac arrest patients treated with therapeutic hypothermia (TH). METHODS: Out-of-hospital cardiac arrest (OHCA) survivors treated with TH between January 2010 and December 2012 were retrospectively evaluated. We captured all components of the APACHE II and SOFA scores over the first 48 hours after intensive care unit (ICU) admission (0 h). The primary outcome measure was in-hospital mortality and the secondary outcome measure was neurologic outcomes at the time of hospital discharge. Receiver-operating characteristic and logistic regression analysis were used to determine the predictability of outcomes with serial APACHE II and SOFA scores. RESULTS: A total of 138 patients were enrolled in this study. The area under the curve (AUC) for APACHE II scores at 0 h for predicting in-hospital mortality and poor neurologic outcomes (cerebral performance category: 3-5) was more than 0.7, and for SOFA scores from 0 h to 48 h the AUC was less than 0.7. Odds ratios used to determine associations between APACHE II scores from 0 h to 48 h and in-hospital mortality were 1.12 (95% confidence interval [CI], 1.03-1.23), 1.13 (95% CI, 1.04-1.23), and 1.18 (95% CI, 1.07-1.30). CONCLUSIONS: APACHE II, but not SOFA score, at the time of ICU admission is a modest predictor of in-hospital mortality and poor neurologic outcomes at the time of hospital discharge for patients who have undergone TH after return of spontaneous circulation following OHCA.
APACHE
;
Area Under Curve
;
Cardiopulmonary Resuscitation
;
Hospital Mortality
;
Humans
;
Hypothermia*
;
Hypothermia, Induced
;
Intensive Care Units
;
Logistic Models
;
Odds Ratio
;
Organ Dysfunction Scores*
;
Out-of-Hospital Cardiac Arrest*
;
Outcome Assessment (Health Care)
;
Retrospective Studies
;
Survivors