1.One Case of Parkinson's Syndrome in a Shipyard Painter Exposed to Mixed Organic Solvents.
Min Heui JO ; Hyung Woo RYU ; Eun A KIM
Korean Journal of Occupational and Environmental Medicine 2009;21(2):192-200
BACKGROUND: It is well-known that organic solvents can cause various neurologic toxicities, and in particular, it had been reported that Parkinson's syndrome can be caused by organic solvents. CASE REPORT: A 53-year-old man who had worked for 13 years as a shipyard spray and brush painter and manifested with moderate cognitive disorder and was diagnosed with chronic toxic encephalopathy. We can assume he had had considerable exposure to organic solvents considering the estimates of the amounts of organic solvents in his work place. He had no specific medical history. The Minnesota Multiphasic Personality Inventory (MMPI) showed mild cognitive deficit, depression, and anxiety. Single Photon Emission Computed Tomography (SPECT) indicated a slightly decreased flow at the edge of the left temporal brain area, while T2 brain Magnetic Resonance Imaging (MRI) showed no specific signs except for ischemic changes in small vessels in the periventricular and subcortical white matter. He was also diagnosed with both carpal tunnel syndrome and peripheral neuropathy through a neuroconductive study. Several years later, he developed progressive bradykinesia and rigidity and, later, resting tremors in the left hand. He was diagnosed with Parkinson's disease and treated with dopaminergic agents, but there was no effect. After that, he was given deep brain stimulation, both. As a result, his tremor is improved. but, the rigidity remained. Three years later, He has continuously received dopaminergic therapy. but, he complains about tremors in both hands and more greatly reduced cognitive function. CONCLUSION: In this case, we assumed by patient's work history and exposure estimates that he was exposed to excessive levels of organic solvents. The clinical symptoms of this patient were very similar to those from Parkinson's disease, but the psychological symptom appeared earlier than the other symptoms and there was no response to dopaminergic agents. We conclude that this case is likely Parkinson's syndrome caused by organic solvents.
Anxiety
;
Brain
;
Carpal Tunnel Syndrome
;
Deep Brain Stimulation
;
Depression
;
Dopamine Agents
;
Hand
;
Humans
;
Hypogonadism
;
Hypokinesia
;
Magnetic Resonance Imaging
;
Middle Aged
;
Mitochondrial Diseases
;
MMPI
;
Neurotoxicity Syndromes
;
Ophthalmoplegia
;
Parkinson Disease
;
Peripheral Nervous System Diseases
;
Solvents
;
Tomography, Emission-Computed, Single-Photon
;
Tremor
;
Workplace
2.One Case of Parkinson's Syndrome in a Shipyard Painter Exposed to Mixed Organic Solvents.
Min Heui JO ; Hyung Woo RYU ; Eun A KIM
Korean Journal of Occupational and Environmental Medicine 2009;21(2):192-200
BACKGROUND: It is well-known that organic solvents can cause various neurologic toxicities, and in particular, it had been reported that Parkinson's syndrome can be caused by organic solvents. CASE REPORT: A 53-year-old man who had worked for 13 years as a shipyard spray and brush painter and manifested with moderate cognitive disorder and was diagnosed with chronic toxic encephalopathy. We can assume he had had considerable exposure to organic solvents considering the estimates of the amounts of organic solvents in his work place. He had no specific medical history. The Minnesota Multiphasic Personality Inventory (MMPI) showed mild cognitive deficit, depression, and anxiety. Single Photon Emission Computed Tomography (SPECT) indicated a slightly decreased flow at the edge of the left temporal brain area, while T2 brain Magnetic Resonance Imaging (MRI) showed no specific signs except for ischemic changes in small vessels in the periventricular and subcortical white matter. He was also diagnosed with both carpal tunnel syndrome and peripheral neuropathy through a neuroconductive study. Several years later, he developed progressive bradykinesia and rigidity and, later, resting tremors in the left hand. He was diagnosed with Parkinson's disease and treated with dopaminergic agents, but there was no effect. After that, he was given deep brain stimulation, both. As a result, his tremor is improved. but, the rigidity remained. Three years later, He has continuously received dopaminergic therapy. but, he complains about tremors in both hands and more greatly reduced cognitive function. CONCLUSION: In this case, we assumed by patient's work history and exposure estimates that he was exposed to excessive levels of organic solvents. The clinical symptoms of this patient were very similar to those from Parkinson's disease, but the psychological symptom appeared earlier than the other symptoms and there was no response to dopaminergic agents. We conclude that this case is likely Parkinson's syndrome caused by organic solvents.
Anxiety
;
Brain
;
Carpal Tunnel Syndrome
;
Deep Brain Stimulation
;
Depression
;
Dopamine Agents
;
Hand
;
Humans
;
Hypogonadism
;
Hypokinesia
;
Magnetic Resonance Imaging
;
Middle Aged
;
Mitochondrial Diseases
;
MMPI
;
Neurotoxicity Syndromes
;
Ophthalmoplegia
;
Parkinson Disease
;
Peripheral Nervous System Diseases
;
Solvents
;
Tomography, Emission-Computed, Single-Photon
;
Tremor
;
Workplace
3.The Significance of Abdominal Ultrasonography as the Initial Diagnostic Method in Blunt Renal Trauma .
Hyun MOON ; Hyung Jee LEE ; Gil Ho LEE ; Jin Woo RYU
Korean Journal of Urology 1998;39(1):19-22
PURPOSE: To evaluated the effectiveness of abdominal ultrasonography as the initial diagnostic method in blunt renal trauma. MATERIALS AND METHODS: This study was undertaken to compare computerized tomography with abdominal ultrasonography in radiographic staging of blunt renal trauma(Renal Injury scale grade I-V by Moor) except vascular injury. During 3-years period(May 1994 to March 1997), emergency computerized tomography was performed in 66 patients with blunt renal trauma, simultaneously 34 patients among 66 patient were scanned by abdominal ultrasonography. RESULTS: Gross hematuria were present 48% of renal trauma cases. The degree of hematuria showed not correlation with the severity of renal injury(p-value=0.213, by Chi-square test). In diagnostic agreement of abdominal ultrasonography compared to computerized tomography, the diagnostic agreement of minor renal injury(x=0.544, by k2 statistics) was higher than that of major renal injury(r=0.375, by k2 statistics). The overall diagnostic agreement of abdominal ultrasonography in detecting adjacent organ injury was 0.321 (k value). CONCLUSIONS: In ultrasonography imaging, we concluded that minor blunt rectal trauma is not necessary other radiologic evaluation, but major blunt renal trauma should be evaluated by computerized tomography for proper diagnosis of combined injury and diagnostic staging of renal trauma. Renal trauma associated Intraabdominal injury should undergo with ultrasonography-guided paracentesis. Based under result of our study, we suggest the use of abdominal ultrasonography as the initial diagnostic method in blunt renal trauma compatible for prompt diagnosis and treatment.
Diagnosis
;
Emergencies
;
Hematuria
;
Humans
;
Paracentesis
;
Ultrasonography*
;
Vascular System Injuries
4.Renal Dysfunction in Acute Heart Failure.
Korean Circulation Journal 2011;41(10):565-574
During treatment of acute heart failure (AHF), worsening renal function is often complicated and results in a complex clinical course. Furthermore, renal dysfunction is a strong independent predictor of long-term adverse outcomes in patients with AHF. Traditionally, the predominant cause of renal dysfunction has been attributed to impairment of cardiac output and relative underfilling of arterial perfusion. Recently, emerging data have led to the importance of venous congestion and elevated intra-abdominal pressure rather than confining it to impaired forward cardiac output as the primary driver of renal impairment. Relief of congestion is a major objective of AHF treatment but therapy is still based on the administration of loop diuretics. The results of the recently performed controlled studies for the assessment of new treatments to overcome resistance to diuretic treatment to protect kidneys from untoward effects have been mostly neutral. Better treatment of congestion in heart failure remains a major problem.
Cardiac Output
;
Cardio-Renal Syndrome
;
Estrogens, Conjugated (USP)
;
Heart
;
Heart Failure
;
Humans
;
Hyperemia
;
Kidney
;
Perfusion
;
Sodium Potassium Chloride Symporter Inhibitors
5.A Case of Basaloid Follicular Hamartoma Combined with Basal Cell Epithelioma.
Sung Woo CHOI ; Young Sik RYU ; Hyung Ok KIM ; Chung Won KIM
Korean Journal of Dermatology 1998;36(1):148-151
Basaloid follicular hamartoma(BFH) is a rare, benign adnexal tumor with a wide clinical appearance spectrum. A characteristic finding is multifocal islands in the papillary dermis and branching cords of basaloid epithelial cells in continuity at various sites with the basal layer of the epidermis and the hair follicles. We present a case of basaloid follicular hamartoma combined with basal cell epithelioma that developed on the tip of the nose in a 75-year-old man. To our knowledge, this is the first case report of basaloid follicular hamartoma combined with basal cell epithelioma in the Korean literature.
Aged
;
Carcinoma, Basal Cell*
;
Dermis
;
Epidermis
;
Epithelial Cells
;
Hair Follicle
;
Hamartoma*
;
Humans
;
Islands
;
Nose
6.Interpretation of 201Tl Myocardial Scan in Ischemic Heart Disease.
Kyu Hyung RYU ; Wang Seong RYU ; Young Jung KIM ; Myoung Mook LEE ; Myung Chul LEE ; Yun Sik CHOI ; Jungdon SEO ; Young Woo LEE
Korean Circulation Journal 1984;14(2):269-278
This study was performed to evaluate the method of quantification of exercise thallium-201(201Tl) myocardial perfusion imaginges(M.P.I.) for the detection of coronary artery disease. Exercise 201 Tl MPI were interpreted objectively, reproducibly, quantitatively and easily by a computer assisted technique-Circumferential profile method. Exercise 201Tl MPI and redistribution images were taken in 32 patients(9 cases of post infarction angina, 13 cases of angina pectoris, 8 cases of atypical chest pain, 1 case of arrhythmial and 1 case of caridac neurosis). The results obtained were as follows: 1) Exercise 201Tl MPI of 3 cases of angina pectoris demonstrated transient perfusion defect in 5 cases, persistent perfusion defect in 2 cases, transient and persistent perfusion defect in 1 cases and no perfusion defect in 5 cases. Exercise 201Tl MPI of 9 case of post-infarction angina revealed persistent perfusion defect in 7 cases and transient and persistent perfusion defect in 2 cases. 201Tl MPI of 8 cases of atypical chest pain showed transient perfusion defect in 1 case and no perfusion defect in 7 cases. There was no perfusion defect in 1 case of arrhythmia and another case of cardiac neurosis. 2) The location of persistent perfusion defects in several views of 201Tl MPI in 9 case of postinfarction angina were consistent with those of infarction area in the electrocardiogram. 3) While visual analysis interpreted three cases to have no perfusion defect and one case to have transient perfusion defect respectively, objective analysis revealed that one of them had transient perfusion defect, another of them had persistent perfusion defect and the other had transient and persistent perfusion defect. 201Tl MPI of three cases could be done easily by circumferential profile method, which were difficult to interprete by subjective visual analysis. The results indicate that Exercise 201Tl MPI interpreted by circumferential profile analysis would be an objective, quantitative and noninvasive method for the detection of ischemic change and location in coronary artery disease.
Angina Pectoris
;
Arrhythmias, Cardiac
;
Chest Pain
;
Coronary Artery Disease
;
Electrocardiography
;
Infarction
;
Myocardial Ischemia*
;
Neurocirculatory Asthenia
;
Perfusion
7.Clinical study on cesarean hysterectomy.
Sang Yoon JUNG ; Hyung Woo RYU ; Byung Tae LEE ; Moon Su KIM ; Young In KIM ; Yoon Sun LEE ; Seung Bo PARK
Korean Journal of Obstetrics and Gynecology 1991;34(2):209-215
No abstract available.
Hysterectomy*
8.Clinical study on cesarean hysterectomy.
Sang Yoon JUNG ; Hyung Woo RYU ; Byung Tae LEE ; Moon Su KIM ; Young In KIM ; Yoon Sun LEE ; Seung Bo PARK
Korean Journal of Obstetrics and Gynecology 1991;34(2):209-215
No abstract available.
Hysterectomy*
9.Elevated Serum Homocysteine in Patients with Coronary Vasospasm.
Seong Woo HAN ; Kyu Hyung RYU ; Yung LEE
Korean Circulation Journal 2004;34(1):53-58
BACKGROUND: Homocysteine is a metabolite of methionine with atherogenic properties via endothelial dysfunction. Endothelial dysfunction is one of main pathophysiologic mechanisms of coronary vasospasm. We examined the relationship between the risk of patients with coronary vasospasm and serum total homocysteine (tHcy), folate, vitamin B12, and plasma vitamin B6. METHODS: Fasting serum tHcy, folate, vitamin B12, and plasma vitamin B6 concentrations were measured in 25 patients (15 men, age 52.8+/-10.1) with coronary vasospasm and compared with 22 healthy control subjects matching in age and sex (10 men, age 52.7+/-9.2). Serum tHcy concentration was higher in the vasospasm group than in the control group (14.8+/-5.3 vs 10.1+/-2.5 micromol/L, p<0.001). RESULTS: Serum folate (6.3+/-1.0 vs 10.2+/-4.5 ng/mL, p<0.001) and vitamin B12 concentration (544.8+/-181.7 vs 1004.9+/-567.1 pg/mL, p<0.001) were lower in vasospasm group. There was no significant difference in plasma vitamin B6 concentration between the two groups (77.8+/-44.3 and 95.8+/-63.4 nmol/L). CONCLUSION: These data support the hypothesis that elevated serum tHcy is a risk factor for coronary vasospasm. Low folate and vitamin B12 levels in patients with coronary vasospasm suggest that these agents contribute therapeutically to the treatment of patients with coronary vasospasm.
Coronary Disease
;
Coronary Vasospasm*
;
Fasting
;
Folic Acid
;
Homocysteine*
;
Humans
;
Male
;
Methionine
;
Plasma
;
Risk Factors
;
Vitamin B 12
;
Vitamin B 6
10.Scleral Perforation During Inferior Rectus Muscle Recession in Congenital Fibrosis of the Extraocular Muscles.
Woo Seok CHOI ; Yoon Hyung KWON ; Won Yeol RYU
Journal of the Korean Ophthalmological Society 2016;57(3):524-527
PURPOSE: We report a case of a scleral perforation during inferior rectus recession in congenital fibrosis of extraocular muscles and the management of this perforation with a scleral patch graft. CASE SUMMARY: A 20-month-old female with bilateral ptosis, absence of elevation and a chin-up position was diagnosed with congenital fibrosis of extraocular muscles. Because severe esotropia in the downward gaze was observed, we first performed esotropia surgery. After 1 year, she underwent a bilateral ptosis correction. We decided to perform bilateral inferior rectus recession due to an abnormal head posture and the absence of elevation. Because the inferior rectus muscles were extremely tight and adhered to the sclera, hooking and isolating these muscles during surgery was difficult. After muscle suture placement, a portion of the sclera that contacted the left inferior rectus was chipped off as this muscle was disinserted with blunt Westcott scissors. A scleral perforation was observed, thus, we placed a scleral patch graft using the donor sclera and finished the bilateral inferior rectus recession. No abnormal findings for the vitreous or retina were detected. At 8 months after surgery, the patient exhibited exotropia of 12 prism diopters in her primary gaze. Her abnormal head posture nearly disappeared. CONCLUSIONS: Careful isolation and disinsertion of the muscle from the globe is necessary in the treatment of patients who are expected to exhibit severe adhesions between the muscle and sclera, such as patients with congenital fibrosis of extraocular muscles.
Esotropia
;
Exotropia
;
Female
;
Fibrosis*
;
Head
;
Humans
;
Infant
;
Muscles*
;
Posture
;
Retina
;
Sclera
;
Sutures
;
Tissue Donors
;
Transplants