1.Transient monoplegia after removal of pedicle screw: a case report.
Hyoun Oh CHO ; Kyoung Duck KWAK ; Sung Do CHO ; Chul Soo RYOO
The Journal of the Korean Orthopaedic Association 1991;26(4):1342-1345
No abstract available.
Hemiplegia*
2.Ultrasonography for the Soft Tissue Tumors
Hyoun Oh CHO ; Kyung Duk KWAK ; Sung Do CHO ; Chul Soo RYOO ; Bub Jae LEE
The Journal of the Korean Orthopaedic Association 1995;30(3):771-778
The ultrasound is also helpful to make the diagnosis of a variety of soft tissue tumors bacause of its safety, low cost, non-invasiveness and usefulness. We analysed ultrasonographic findings of 43 cases of soft tissue tumors which were histopathologically confirmed by biopsy and obtained the following results. The ultrasonography could effectively image not only the presence, size and location of the lesion, but also the relationship between the lesion and the adjacent structures. And this method could easily identify the consistency of the lesion, solid or cystic nature, be used to guide the percutaneous biopsy and aspiration without exposure to radiation, and afford the differentiation of malignant lesion from benign one. It could also define the eritities of soft tissue tumors by the nature of internal echo, margin of the lesion, internal echo homogeniety, post-acoustic enhancement, and so on.
Biopsy
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Diagnosis
;
Methods
;
Ultrasonography
3.Operative Treatment of Thoracolumbar Spine Fractures with AO Internal Fixator
Hyoun Oh CHO ; Kyung Duk KWAK ; Sung Do CHO ; Chul Soo RYOO ; Jong Dae BAEK ; Il Jong YANG
The Journal of the Korean Orthopaedic Association 1995;30(4):926-932
The AO internal fixation system(the Fixateur Interne) is effective in reducing and stablizing a variety of unstable thoracolumbar fracture patterns. It is relatively effective in decompressing the canal of retropulsed bony fragments associated with burst fracture. Sixty-Two patients with unstable thoracolumbar spine fractures were treated with the AO internal fixator. They were followed for an average of 21 months(range 15-29 months). A compartive radiographic analysis of kyphosis and vertebral height was made using pre-operative, post-operative and follow-up radiogram. Changes in neural canal compromise were measured in 18 cases of burst fractures. Failure of instrumentation occured in 9 cases which were carefully analyzed. Recently, we've constructed the system of which the Schanz screws would be directed divergently in sagittal plane in the hope that the load to the screws might be reduced, thus the failure rate.
Follow-Up Studies
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Hope
;
Humans
;
Internal Fixators
;
Kyphosis
;
Neural Tube
;
Spine
4.A Case of the Paratesticular Rhabdomyosarcoma.
Hee Soo RYOO ; Kap Beong KIM ; Beong Uck SO ; Yoo Chan KIM ; Sae Chul KIM
Korean Journal of Urology 1982;23(3):423-426
Rhabdomyosarcoma is the most common tumor affecting the lower urinary tract of children, and is highly malignant with a tendency to involve local structure early and eventually metastasize to distant sites. Although about 15% of all juvenile rhabdomyosarcoma involve the urogenital tract most often the prostate, bladder, only a small number begin in the paratesticular tissues. Paratesticular rhabdomyosarcoma usually presents as a large intrascrotal mass that compresses the testis and epididymis, sometimes reaching the external inguinal ring. None case of paratesticular rhabdomyosarcoma has previously been reported in literature yet in Korea. We fist report a case of this tumor developed in a 6 years old boy and the relevant literature has been reviewed.
Child
;
Epididymis
;
Humans
;
Inguinal Canal
;
Korea
;
Male
;
Prostate
;
Rhabdomyosarcoma*
;
Testis
;
Urinary Bladder
;
Urinary Tract
5.Functional MRI of Language: Difference of its Activated Areas and Lateralization according to the Input Modality.
Jae Wook RYOO ; Jae Min CHO ; Ho Chul CHOI ; Mi Jung PARK ; Hye Young CHOI ; Ji Eun KIM ; Heon HAN ; Sam Soo KIM ; Yong Hwan JEON ; Hyun Soo KHANG
Journal of the Korean Society of Magnetic Resonance in Medicine 2011;15(2):130-138
PURPOSE: To compare fMRIs of visual and auditory word generation tasks, and to evaluate the difference of its activated areas and lateralization according to the mode of stimuli. MATERIALS AND METHODS: Eight male normal volunteers were included and all were right handed. Functional maps were obtained during auditory and visual word generation tasks in all. Normalized group analysis were performed in each task and the threshold for significance was set at p<0.05. Activated areas in each task were compared visually and statistically. RESULTS: In both tasks, left dominant activations were demonstrated and were more lateralized in visual task. Both frontal lobes (Broca's area, premotor area, and SMA) and left posterior middle temporal gyrus were activated in both tasks. Extensive bilateral temporal activations were noted in auditory task. Both occipital and parietal activations were demonstrated in visual task. CONCLUSION: Modality independent areas could be interpreted as a core area of language function. Modality specific areas may be associated with processing of stimuli. Visual task induced more lateralized activation and could be a more useful in language study than auditory task.
Brain
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Frontal Lobe
;
Hand
;
Humans
;
Magnetic Resonance Imaging
;
Male
6.Patient Characteristics in Cases of Misdiagnosed Delirium upon Psychiatric Consultation in a University Hospital: A Pilot Study.
Jung Won CHOI ; Hanson PARK ; Jae Hong RYOO ; Kyu Wol YUN ; Young Chul KIM ; Weon Jeong LIM ; Eui Jung KIM ; Soo In KIM
Journal of Korean Neuropsychiatric Association 2010;49(4):383-387
OBJECTIVES: The misdiagnosis of delirium may result in a delay of correct diagnosis and appropriate treatment of the delirium. Additionally, aggravation of physical illnesses can occur. The objective of this study was to investigate patient characteristics in cases of misdiagnosed delirium upon psychiatric consultation in a university hospital. METHODS: Subjects included patients with delirium among all who we had consulted over a 12 week span. Psychiatric diagnosis was made by two well-trained psychiatrists by means of the DSM-IV-TR. Cognitive function, level of delirium, and physical function were evaluated by the Korean version of Mini Mental Status Examination (MMSE-K), the Delirium Rating Scale-Revised-98 (DRS-R-98), the Clinical Global Impression-Severity (CGI-S), the Eastern Cooperative Oncology Group Performance Status (ECOG-PS), and the Global Assessment of Functioning Scale (GAF). In addition, we collected socio-demographic information, date of admission and consultation, present causes of consultation, and speculated psychiatric diagnoses made by referring physicians. RESULTS: Among 45 subjects with delirium, only 28 patients (62%) were diagnosed with delirium by referring physicians at the time of consultation. The remaining 17 patients (38%) had been diagnosed with other illnesses. The group of misdiagnosed patients tended to have a longer duration of formal education than those that had been correctly diagnosed. CONCLUSION: Early diagnosis and intervention of delirium can minimize subsequent problems related to delayed diagnosis. Therefore, it is vital to identify the factors related to misdiagnoses by referring physicians. This study showed that a longer duration of formal education is a contributing factor for the misdiagnosis of delirium. Longer education may cover up the typical symptoms of delirium. This can keep referring physicians from making a correct diagnosis. This study was a pilot study investigating diagnostic accuracy of delirium by referring physicians. Additional, well-controlled studies are warranted.
Delayed Diagnosis
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Delirium
;
Diagnostic Errors
;
Early Diagnosis
;
Humans
;
Mental Disorders
;
Pilot Projects
;
Psychiatry
7.A Study on Correlation between Anxiety Symptoms and Suicidal Ideation.
Hee Yeon CHOI ; Soo In KIM ; Kyu Wol YUN ; Young Chul KIM ; Weon Jeong LIM ; Eui Jung KIM ; Jae Hong RYOO
Psychiatry Investigation 2011;8(4):320-326
OBJECTIVE: In South Korea, the number of deaths from suicide has increased in the last two decades, and suicide has become both a social and political problem. In this study, after controlling the variables influencing suicidal ideation, it was expected that it would be determined if anxiety symptoms are independently related to suicidal ideation. METHODS: Data were obtained from 327 psychiatric outpatients accomplished a self-reported questionnaire that included sociodemographic characteristics and clinical variables as well as self-rating scales for measuring the severity of one's anxiety, depression, and suicidal ideation. Logistic-regression analyses were used to determine the correlation between anxiety symptoms and significant suicidal ideation, adjusting for covariates. RESULTS: The patients with significant suicidal ideation were shown to be less educated, unemployed, never married, divorced, or separated by death, or living alone, and were shown to have a lower income, a drinking habit, a higher number of past suicide attempts, and more family members who committed suicide, than the patients without significant suicidal ideation. After adjusting the covariates influencing significant suicidal ideation, anxiety symptoms were associated with significant suicidal ideation. However, after adjusting for depressive symptoms, only the trait anxiety was associated with significant suicidal ideation. CONCLUSION: These findings suggest that anxiety symptoms are an independent risk factor for suicidal ideation. Clinicians may thus use anxiety symptoms for the screening examination when evaluating suicidal ideation and risk, and will have to actively evaluate and treat the anxiety symptoms of patients with suicidal tendencies.
Anxiety
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Depression
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Divorce
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Drinking
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Humans
;
Mass Screening
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Outpatients
;
Surveys and Questionnaires
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Republic of Korea
;
Risk Factors
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Single Person
;
Suicidal Ideation
;
Suicide
;
Weights and Measures
8.Peritonitis by Chryseobacterium indologenes and Sphingomonas paucimobilis in a Patient Undergoing Continuous Ambulatory Peritoneal Dialysis (CAPD).
Jeong Soo YOON ; Eun Ah HWANG ; Mi Hyun CHANG ; Woo Young PARK ; Kyu Bok JIN ; Seung Yeup HAN ; Sung Bae PARK ; Hyun Chul KIM ; Nam Hee RYOO
Korean Journal of Nephrology 2007;26(6):801-805
Bacterial peritonitis is a well-recognized complication of continuous ambulatory peritoneal dialysis (CAPD) in patients with end-stage renal failure. Chryseobacterium indologenes is a non-fermentative Gram-negative bacillus that is a rare pathogen in humans and Sphinomomas paucimobilis has rarely been reported as an opportunistic human pathogen. We present a case of peritonitis due to unusual pathogens, C. indologenes and S. paucimobilis, unresponsive to the standard antibiotics therapy. A 51-year-old diabetic man undergoing CAPD for 45 days developed the first peritonitis due to C. indolegenes. Although he had received intraperitoneal antibiotics with good in vitro activity against organism, the signs of peritonitis persisted. S. paucimobilis was isolated from dialysate sample. The Tenckhoff catheter was finally removed on 19th day of hospitalization and the fever and abdominal pain subsided.
Abdominal Pain
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Anti-Bacterial Agents
;
Bacillus
;
Catheters
;
Chryseobacterium*
;
Fever
;
Hospitalization
;
Humans
;
Kidney Failure, Chronic
;
Middle Aged
;
Peritoneal Dialysis
;
Peritoneal Dialysis, Continuous Ambulatory*
;
Peritonitis*
;
Sphingomonas*
9.Comparative Analysis of Lung Perfusion Scan and SPECT/CT for the Evaluation of Functional Lung Capacity
Hoon Young SUH ; Sohyun PARK ; Hyun Gee RYOO ; Ji Young KIM ; Tae Sung KIM ; Jong Mog LEE ; Moon Soo KIM ; Hee Chul YANG ; Seok Ki KIM
Nuclear Medicine and Molecular Imaging 2019;53(6):406-413
PURPOSE: This study aimed to compare lung perfusion scan with single photon emission computed tomography/computed tomography (SPECT/CT) for the evaluation of lung function and to elucidate the most appropriate modality for the prediction of postoperative lung function in patients with lung cancer.METHODS: A total of 181 patients underwent Tc-99m macroaggregated albumin lung perfusion scan and SPECT/CT to examine the ratio of diseased lung and diseased lobe. Forty-one patients with lung cancer underwent both preoperative and postoperative pulmonary function tests within 1 month to predict postoperative pulmonary function. Predicted postoperative forced expiratory volume in 1 s (ppoFEV₁) was calculated by the % radioactivity of lung perfusion scan and SPECT, and the % volume of the residual lung, assessed on CT.RESULTS: The ratios of diseased lung as seen on lung perfusion scan and SPECT showed significant correlation, but neither modality correlated with CT. The ratios of the diseased lung and diseased lobe based on CT were higher than the ratios based on either perfusion scan or SPECT, because CT overestimated the function of the diseased area. The lobar ratio of both upper lobes was lower based on the perfusion scan than on SPECT but was higher for both lower lobes. Actual postoperative FEV₁ showed significant correlation with ppoFEV₁ based on lung perfusion SPECT and perfusion scan.CONCLUSIONS: We suggest SPECT/CT as the primary modality of choice for the assessment of the ratio of diseased lung area. Both perfusion scan and SPECT/CT can be used for the prediction of postoperative lung function.
Forced Expiratory Volume
;
Humans
;
Lung Neoplasms
;
Lung Volume Measurements
;
Lung
;
Perfusion
;
Radioactivity
;
Respiratory Function Tests
;
Tomography, Emission-Computed, Single-Photon
10.Comparative Analysis of Lung Perfusion Scan and SPECT/CT for the Evaluation of Functional Lung Capacity
Hoon Young SUH ; Sohyun PARK ; Hyun Gee RYOO ; Ji Young KIM ; Tae Sung KIM ; Jong Mog LEE ; Moon Soo KIM ; Hee Chul YANG ; Seok Ki KIM
Nuclear Medicine and Molecular Imaging 2019;53(6):406-413
PURPOSE:
This study aimed to compare lung perfusion scan with single photon emission computed tomography/computed tomography (SPECT/CT) for the evaluation of lung function and to elucidate the most appropriate modality for the prediction of postoperative lung function in patients with lung cancer.
METHODS:
A total of 181 patients underwent Tc-99m macroaggregated albumin lung perfusion scan and SPECT/CT to examine the ratio of diseased lung and diseased lobe. Forty-one patients with lung cancer underwent both preoperative and postoperative pulmonary function tests within 1 month to predict postoperative pulmonary function. Predicted postoperative forced expiratory volume in 1 s (ppoFEVâ‚) was calculated by the % radioactivity of lung perfusion scan and SPECT, and the % volume of the residual lung, assessed on CT.
RESULTS:
The ratios of diseased lung as seen on lung perfusion scan and SPECT showed significant correlation, but neither modality correlated with CT. The ratios of the diseased lung and diseased lobe based on CT were higher than the ratios based on either perfusion scan or SPECT, because CT overestimated the function of the diseased area. The lobar ratio of both upper lobes was lower based on the perfusion scan than on SPECT but was higher for both lower lobes. Actual postoperative FEVâ‚ showed significant correlation with ppoFEVâ‚ based on lung perfusion SPECT and perfusion scan.
CONCLUSIONS
We suggest SPECT/CT as the primary modality of choice for the assessment of the ratio of diseased lung area. Both perfusion scan and SPECT/CT can be used for the prediction of postoperative lung function.