1.Prevalence of Osteoporosis and Effectiveness of Screening Test Using Ultrasound Bone Densitometry and Education in a Community-Dwelling Population.
Yu Jun KWON ; Ki Soo PARK ; Bong Hoi CHOI ; Byung Sung KIM ; Yong Chan HA
Journal of Korean Medical Science 2017;32(2):352-356
This prospective intervention study was undertaken to estimate the prevalence and treatment rate of osteoporosis following osteoporosis screening tests in the same cohort. From November 1, 2014 to August 31, 2015, participants received screening tests for osteoporosis using ultrasound bone densitometry and education concerning osteoporosis and related conditions. The participants were interviewed using a questionnaire on the diagnosis and initiation of osteoporosis treatment during the follow-up period. Of 960 potential participants, 595 people (68.8%; 150 men and 445 women) were given bone densitometry measurements and completed the questionnaire. The mean age of the participants was 74.0 years. Of the 595 participants, 393 people (66.1%; 67 men and 326 woman) were diagnosed with osteoporosis (T score <−2.5). The prevalence of osteoporosis showed an increasing trend, from 48.1% in 2004 to 66.1% in 2015. Of the 393 participants diagnosed with osteoporosis, 65 participants received additional bone densitometry measurements while hospitalized and osteoporosis management was re-initiated in 44 patients. The osteoporosis management rate in the study cohort increased from 21.6% to 32.8%, with osteoporosis diagnosed in 66.2% of participants at the latest follow-up. This prospective intervention study demonstrated that a screening test and an educational brochure increased the treatment rate from 21.6% to 32.8%.
Cohort Studies
;
Densitometry*
;
Diagnosis
;
Education*
;
Follow-Up Studies
;
Humans
;
Male
;
Mass Screening*
;
Osteoporosis*
;
Pamphlets
;
Prevalence*
;
Prospective Studies
;
Ultrasonography*
2.Ipsilateral Cerebral and Contralateral Cerebellar Hyperperfusion in Patients with Unilateral Cerebral Infarction; SPM Analysis.
Sun Pyo HONG ; Joon Kee YOON ; Bong Hoi CHOI ; In Soo JOO ; Seok Nam YOON
Nuclear Medicine and Molecular Imaging 2008;42(5):347-353
PURPOSE: Cortical reorganization has an important role in the recovery of stroke. We analyzed the compensatory cerebral and cerebellar perfusion change in patients with unilateral cerebral infarction using statistical parametric mapping (SPM). MATERIALS AND METHODS: Fifty seven (99m)Tc-Ethylene Cystein Diethylester (ECD) cerebral perfusion SPECT images of 57 patients (male/female=38/19, mean age=56+/-17 years) with unilateral cerebral infarction were evaluated retrospectively. Patients were divided into subgroups according to the location (left, right) and the onset (acute, chronic) of infarction. Each subgroup was compared with normal controls (male/female=11/1, mean age=36+/-10 years) in a voxel-by-voxel manner (two sample t-test, p<0.001) using SPM. RESULTS: All 4 subgroups showed hyperperfusion in the ipsilateral cerebral cortex, but not in the contralateral cerebral cortex. Chronic left and right infarction groups revealed hyperperfusion in the ipsilateral primary sensorimotor cortex, meanwhile, acute subgroups did not. Contralateral cerebellar hyperperfusion was also demonstrated in the chronic left infarction group. CONCLUSION: Using (99m)Tc-ECD SPECT, we observed ipsilateral cerebral and contralateral cerebeller hyperperfusion in patients with cerebral infarction. However, whether these findings are related to the recovery of cerebral functions should be further evaluated.
Cerebral Cortex
;
Cerebral Infarction
;
Humans
;
Infarction
;
Perfusion
;
Retrospective Studies
;
Stroke
;
Tomography, Emission-Computed, Single-Photon
3.Target movement according to cervical lymph node level in head and neck cancer and its clinical significance
Hoon Sik CHOI ; Bae Kwon JEONG ; Hojin JEONG ; In Bong HA ; Bong-Hoi CHOI ; Ki Mun KANG
Radiation Oncology Journal 2023;41(4):283-291
Purpose:
To evaluate set-up error for head and neck cancer (HNC) patients according to each neck lymph node (LN) level. And clinical factors affecting set-up error were analyzed.
Materials and Methods:
Reference points (RP1, RP2, RP3, and RP4) representing neck LN levels I to IV were designated. These RP were contoured on simulation computed tomography (CT) and cone-beam CT of 89 HNC patients with the same standard. After image registration was performed, movement of each RP was measured. Univariable logistic regression analyses were performed to analyze clinical factors related to measured movements.
Results:
The mean value of deviation of all axes was 1.6 mm, 1.3 mm, 1.8 mm, and 1.5 mm for RP1, RP2, RP3, and RP4, respectively. Deviation was over 3 mm in 24 patients. Movement of more than 3 mm was observed only in RP1 and RP3. In RP1, it was related to bite block use. Movement exceeding 3 mm was most frequently observed in RP3. Primary tumor and metastatic LN volume change were clinical factors related to the RP3 movement.
Conclusion
Planning target volume margin of 4 mm for neck LN level I, 3 mm for neck LN level II, 5 mm for neck LN level III, and 3 mm for neck LN level IV was required to include all movements of each LN level. In patients using bite block, changes in primary tumor volume, and metastatic LN volume were related to significant movement.
4.Differential Diagnostic Value of Total T3/Free T4 Ratio in Graves' Disease and Painless Thyroiditis Presenting Thyrotoxicosis.
Sang Min LEE ; Soo Kyoung KIM ; Jong Ryeal HAHM ; Jung Hwa JUNG ; Ho Su KIM ; Sungsu KIM ; Soon Il CHUNG ; Bong Hoi CHOI ; Tae Sik JUNG
Endocrinology and Metabolism 2012;27(2):121-125
BACKGROUND: It is important to differentiate Graves' disease from that of painless thyroiditis in patients with thyrotoxicosis. In this study, we evaluated the usefulness of total T3 to free T4 ratio in making a differential diagnosis between Graves' disease and painless thyroiditis. METHODS: We reviewed medical records of thyrotoxic patients, who had been diagnosed with Graves' disease or painless thyroiditis, from October 2009 to July 2011. We assessed clinical characteristics, serum levels of total T3, free T4, thyroid stimulating hormone, thyrotropin-binding inhibitory immunoglobulin, and findings of 99mTechnetium thyroid scan. We analyzed the total T3/free T4 ratios between Graves' disease and painless thyroiditis patients. RESULTS: A total of 76 untreated thyrotoxic patients "49 Graves' disease and 27 painless thyroiditis" were examined. The total T3, free T4 levels and the total T3/free T4 ratios were significantly higher in patients with Graves' disease than in those with painless thyroiditis (P < 0.001). In the total T3/free T4 ratio > 73, the possibility of Graves' disease was significantly higher than in painless thyroiditis (sensitivity, 75.5%; specificity, 70.3%). The sensitivity and specificity of the total T3/free T4 ratio in patients with free T4 < 3.6 ng/dL have been increased (sensitivity, 100%; specificity, 71.4%). CONCLUSION: The total T3/free T4 ratios was useful for making a differential diagnosis between Graves' disease and painless thyroiditis.
Diagnosis, Differential
;
Graves Disease
;
Humans
;
Immunoglobulins
;
Immunoglobulins, Thyroid-Stimulating
;
Medical Records
;
Sensitivity and Specificity
;
Thyroid Gland
;
Thyroiditis
;
Thyrotoxicosis
;
Thyrotropin
5.18F-FDG PET/CT Finding in a Case of Xanthogranulomatous Pyelonephritis.
Bong Hoi CHOI ; Sun Pyo HONG ; Joon Kee YOON ; Ki Soo PAI ; Jeong HONG ; Hyun Ee YIM
Nuclear Medicine and Molecular Imaging 2009;43(2):150-153
Xanthogranulomatous pyelonephritis is an uncommon chronic renal infection, which is usually found on middle-aged women and is rare in infant. Sometimes it forms focal mass like lesion of kidney with pathologically characteristic lipid-laden macrophage. A 1-month female infant was admitted for fever and moaning sound. On work-up of urinary tract infection, abdomen ultrasonography and computed tomography revealed a large mass on the upper portion of right kidney and PET/CT showed homogeneously increased 18F-FDG uptake. The radical nephrectomy of right kidney was performed and histology revealed a focal xanthogranulomatous pyelonephritis. To our knowledge, this is the first report presenting the finding of 18F-FDG PET/CT in the childhood xanthogranulomatous pyelonephritis.
Abdomen
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Female
;
Fever
;
Fluorodeoxyglucose F18
;
Humans
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Infant
;
Kidney
;
Macrophages
;
Nephrectomy
;
Pyelonephritis, Xanthogranulomatous
;
Urinary Tract Infections
6.Analysis of Role of Peripheral Vestibular Receptors on Orthostatic Tolerance using Heart Rate Variability in Rats.
Seong Wook PARK ; Han Saem LEE ; Seung Hoi LEE ; Hak Seung LEE ; Bong Kee CHOI ; Yo Sik KIM ; Kwang Ho JO ; Min Sun KIM ; Byung Rim PARK
Journal of the Korean Neurological Association 2002;20(6):652-659
BACKGROUND: There is substantial evidence that the vestibular system is involved in the regulation of blood pressure. Heart rate variability (HRV) is useful to investigate the role of the peripheral vestibular receptors and the baroreceptors in the orthostatic tolerance. METHODS: EKG was recorded during postural changes with the head up either after sinoaortic denervation or after bilateral labyrinthectomies in Sprague-Dawley rats. HRV, including mean, standard deviation, coefficient of variation (CV), and power spectrum, were analyzed from R-R intervals of EKG. RESULTS: Phenylephrine increased low frequency region and sodium nitroprusside increased high frequency region in the power spectral analysis of HRV in anesthetized rats. Postural changes decreased blood pressure transiently and then increased blood pressure gradually in control rats, but the depression of blood pressure induced by postural change was greater in rats with both sinoaortic denervation and bilateral labyrinthectomies. The increase of CV of HRV just after sinoaortic denervation or bilateral labyrinthectomies represents an unstable heart rate in resting position, however, CV of HRV was increased markedly by postural change 7 days after bilateral labyrinthectomies. Postural change with sinoaortic denervation increased low-frequency region representing sympathetic activity, whereas bilateral labyrinthectomies increased highfrequency region representing parasympathetic activity in power spectral analysis. CONCLUSIONS: These results suggest that both the peripheral vestibular receptors and the baroreceptors have subsidiary action in orthostatic tolerance and the peripheral vestibular receptors regulate blood pressure during postural change through the sympathetic nervous system.
Animals
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Blood Pressure
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Denervation
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Depression
;
Electrocardiography
;
Head
;
Heart Rate*
;
Heart*
;
Nitroprusside
;
Phenylephrine
;
Pressoreceptors
;
Rats*
;
Rats, Sprague-Dawley
;
Sympathetic Nervous System
7.Isolated Splenic Metastasis of Sigmoid Colon Cancer Detected by 18F-FDG PET/CT.
Young Sil AN ; Joon Kee YOON ; Seon Pyo HONG ; Bong Hoi CHOI ; Chul Woo JOH ; Seok Nam YOON
Nuclear Medicine and Molecular Imaging 2007;41(3):263-264
Splenic metastasis from colon carcinoma are rare and usually occur in the presence of disseminated visceral metastasis. The liver is the most common site of metastatic spread from colon cancer. Several hypotheses have attempted to explain the low incidence of splenic metastasis. It should be difficult for colorectal cancer cells to reach the spleen through the portal venous system, in which the blood flow is usually from the spleen to the liver. Reticuloendothelial system or rhythmic contraction of the spleen may squeeze out the tumor in the spleen. The absence of afferent lymphatic to the spleen, phagocytic activity and humoral anticancer substances are considered to be other reason for low incidence of splenic metastasis. We report the case of 18F-FDG PET/CT finding in a 70-year-old woman who develop isolated splenic metastasis of sigmoid colon cancer.
Aged
;
Colon
;
Colon, Sigmoid*
;
Colonic Neoplasms
;
Colorectal Neoplasms
;
Female
;
Fluorodeoxyglucose F18*
;
Humans
;
Incidence
;
Liver
;
Mononuclear Phagocyte System
;
Neoplasm Metastasis*
;
Positron-Emission Tomography and Computed Tomography*
;
Sigmoid Neoplasms*
;
Spleen
8.Effects of Repetitive Transcranial Magnetic Stimulation Over Trunk Motor Spot on Balance Function in Stroke Patients.
Cheol Min CHOI ; Jin Hong KIM ; June Kyung LEE ; Bong Yeon LEE ; Hoi Sung KEE ; Kwang Ik JUNG ; Seo Ra YOON
Annals of Rehabilitation Medicine 2016;40(5):826-834
OBJECTIVE: To assess the efficacy of high-frequency repetitive transcranial magnetic stimulation (rTMS) on balance function in patients with chronic stroke. METHODS: Thirty participants with chronic stroke were enrolled in this study. High frequency (10 Hz) rTMS was delivered with butterfly-coil on trunk motor spot. Each patient received both real and sham rTMS in a random sequence. The rTMS cycles (real or sham) were composed of 10 sessions each, administered over two weeks, and separated by a 4-week washout period. Balance function was measured by Berg Balance Scale and computerized dynamic posturography to determine the effect of rTMS before and one day after the end of each treatment period, as well as at a 1-month follow-up. RESULTS: The balance function was significantly improved after high frequency rTMS as compared with that after sham rTMS (p<0.05). There was no serious adverse effect in patients during the treatment period. CONCLUSION: In the chronic stroke patients, high frequency rTMS to the trunk motor area seems to be a helpful way to improve balance function without any specific adverse effects. Further studies are needed to identify the underlying mechanism and generate a detailed protocol.
Follow-Up Studies
;
Hemiplegia
;
Humans
;
Motor Cortex
;
Postural Balance
;
Stroke*
;
Transcranial Magnetic Stimulation*
9.Multiple Cutaneous Squamous Cell Carcinomas Arising in Several Body Areas Except for the Face.
Jun Sik KIM ; Young Ji PARK ; Nam Gyun KIM ; Yoon Jung LEE ; Bong Hoi CHOI ; Kyung Suk LEE
Archives of Plastic Surgery 2017;44(6):567-568
No abstract available.
Carcinoma, Squamous Cell*
;
Epithelial Cells*
10.Pak1/LIMK1/Cofilin Pathway Contributes to Tumor Migration and Invasion in Human Non-Small Cell Lung Carcinomas and Cell Lines.
Inseok JANG ; Byeong Tak JEON ; Eun Ae JEONG ; Eun Jin KIM ; Dawon KANG ; Jong Sil LEE ; Baek Geun JEONG ; Jin Hyun KIM ; Bong Hoi CHOI ; Jung Eun LEE ; Jong Woo KIM ; Jun Young CHOI ; Gu Seob ROH
The Korean Journal of Physiology and Pharmacology 2012;16(3):159-165
Squamous cell carcinoma (SCC) and adenocarcinoma (AC) are the major histological types of non-small cell lung carcinoma (NSCLC). Although both SCCs and ACs have been characterized histologically and clinically, the precise mechanisms underlying their migration and invasion are not yet known. Here, we address the involvement in NSCLC of the p21-associated kinase1 (Pak1)/LIM kinase1 (LIMK1)/cofilin pathway, which recently has been reported to play a critical role in tumor migration and invasion. The Pak1/LIMK1/cofilin pathway was evaluated in tumors from SCC (n=35) and AC (n=35) patients and in SCC- and AC-type cell lines by western blotting, immunohistochemistry, and in vitro migration and invasion assays. The levels of phosphorylated Pak1, LIMK1, and cofilin in lung tumor tissues from SCC patients were increased as compared to normal tissues. In addition, immunohistochemistry showed greater expression of phosphorylated cofilin in SCC tissues. Expression of phosphorylated Pak1 and LIMK1 proteins was also significantly higher in SCC-type cells than in AC-type cells. Moreover, migration and invasion assays revealed that a higher percentage of SCC type cells exhibited migration and invasion compared to AC type cells. Migration was also decreased in LIMK1 knockdown SK-MES-1 cells. These findings suggest that the activation of the Pak1/LIMK1/cofilin pathway could preferentially contribute to greater tumor migration and invasion in SCC, relative to that in AC.
Adenocarcinoma
;
Blotting, Western
;
Carcinoma, Squamous Cell
;
Cell Line
;
Humans
;
Immunohistochemistry
;
Lung
;
Lung Neoplasms
;
Proteins