1.Unusual Imaging Findings of Epithelioid Hemangioma:Case Report of Single Intramedullary Sclerotic Bone Lesion
Yun Chul HWANG ; Tae Eun KIM ; Jae Hyuck YI
Journal of the Korean Society of Radiology 2024;85(5):986-991
Epithelioid hemangioma (EH) is an uncommon, benign vascular tumor of mesenchymal origin. It mainly presents as a tumor with a lytic appearance and septations. However, no case reports have documented the predominantly sclerotic appearance of EH. Here, we present the imaging findings, including X-ray, CT, MRI, and histopathological findings of a 24-year-old female with EH.
2.Unusual Imaging Findings of Epithelioid Hemangioma:Case Report of Single Intramedullary Sclerotic Bone Lesion
Yun Chul HWANG ; Tae Eun KIM ; Jae Hyuck YI
Journal of the Korean Society of Radiology 2024;85(5):986-991
Epithelioid hemangioma (EH) is an uncommon, benign vascular tumor of mesenchymal origin. It mainly presents as a tumor with a lytic appearance and septations. However, no case reports have documented the predominantly sclerotic appearance of EH. Here, we present the imaging findings, including X-ray, CT, MRI, and histopathological findings of a 24-year-old female with EH.
3.Unusual Imaging Findings of Epithelioid Hemangioma:Case Report of Single Intramedullary Sclerotic Bone Lesion
Yun Chul HWANG ; Tae Eun KIM ; Jae Hyuck YI
Journal of the Korean Society of Radiology 2024;85(5):986-991
Epithelioid hemangioma (EH) is an uncommon, benign vascular tumor of mesenchymal origin. It mainly presents as a tumor with a lytic appearance and septations. However, no case reports have documented the predominantly sclerotic appearance of EH. Here, we present the imaging findings, including X-ray, CT, MRI, and histopathological findings of a 24-year-old female with EH.
4.Vaginal leiomyoma mimicking a malignant neoplasm on MR imaging.
Dong Hoon SUH ; So Yi LIM ; Jinsoo CHUNG ; Hyuck Jae CHOI ; Sun LEE ; Sang Yoon PARK
Korean Journal of Obstetrics and Gynecology 2006;49(11):2432-2437
We report a case of vaginal leiomyoma in a female patient, which presented with a palpable paraurethral mass with several urinary symptoms such as frequency, urgency and dysuria. The physical examination revealed a localized, mobile, nontender mass in the anterior vaginal wall. Pelvic magnetic resonance (MR) imaging showed a malignant-looking vaginal mass co-existing with multiple uterine leiomyomas. The diagnosis was made through transvaginal ultrasound-guided needle biopsy. The surgical excision was accomplished without any complication. Despite the rarity, a few cases of malignant lesion presented with paraurethral mass were previously reported. The surgical excision and pathological confirmation of the benignancy is necessary.
Biopsy, Needle
;
Diagnosis
;
Dysuria
;
Female
;
Humans
;
Leiomyoma*
;
Magnetic Resonance Imaging*
;
Physical Examination
5.Clinically Occult Diffuse Large B-Cell Lymphoma of the Middle Turbinate Identified Using ¹â¸F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography: A Case Report
Dong Hyeon KIM ; Sang Kwon LEE ; Mi Jeong KIM ; Jae Hyuck YI ; Mi Sun CHOI
Journal of the Korean Radiological Society 2019;80(3):548-554
We report a case of clinically occult diffuse large B-cell lymphoma (DLBCL) of the middle turbinate (MT) identified by ¹â¸F-fluorodeoxyglucose positron emission tomography/computed tomography (¹â¸F-FDG PET/CT) in a 71-year-old man along with imaging findings. DLBCL was presented with a hypermetabolic right MT [maximum standardized uptake values (SUV(max)) = 8.8 gm/dL] on ¹â¸F-FDG PET/CT, while rhinologic examination was normal. CT showed nothing but slightly more intense enhancement of the right MT compared with the opposite side. The disease progressed during next 7 months until follow-up CT demonstrated solidly enhancing mass occupying entire right nasal cavity which was intensely hypermetabolic (SUV(max) = 12.8 gm/dL). Surgical biopsy confirmed the diagnosis. Follow-up CT and 18F-FDG PET/CT performed after chemotherapy demonstrated complete resolution of DLBCL of the right nasal cavity including the right MT. This is thought to be the first case report in the literature concerning clinically occult DLBCL presenting as a hypermetabolic MT on ¹â¸F-FDG PET/CT.
6.Resistive Index Analysis Using Doppler Ultrasonography in Patients with Acute Stroke.
Jae Hyuck YI ; Hui Joong LEE ; Han Young JEONG ; Jongmin LEE ; Yong Sun KIM
Journal of the Korean Society of Medical Ultrasound 2007;26(3):137-143
PURPOSE: To evaluate the usefulness of resistive index using carotid Doppler sonography for understanding hemodynamics in acute stroke patients. MATERIALS and METHODS: We retrospectively reviewed Doppler sonography in 97 acute stroke patients and 235 asymptomatic patients. We compared the resistive index between the ipsilateral and contralateral internal carotid arteries, and analyzed the relationship between the degree of stenosis and the resistive index of the internal carotid artery using linear regression analysis. We divided our patients into two groups according to the ASPECT score (7 and more and less than 7) determined from diffusion and T2 weighted images. Then we analyzed the difference of Doppler sonographic parameters between these two groups (independent t test). RESULTS: The resistive indices of both the ipsilateral internal carotid arteries of the acute stroke patients and the arteries of the asymptomatic patients showed a positive correlation with their respective degrees of stenosis (R2 = 0.127, p < 0.001; R2 = 0.046, p < 0.001, respectively). However, the resistive index of the contralateral internal carotid arteries was not correlated with their degree of stenosis (R2 = 0.016, p = 0.215). The resistive index of the ipsilateral internal carotid arteries in the acute stroke patients was significantly higher in the patients with ASPECT more than 7 than those with ASPECT score less than 7 (p = 0.002). CONCLUSION: Evaluation of the resistive index of the internal carotid arteries in acute stroke patients may be useful for understanding the cerebral hemodynamics.
Arteries
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Carotid Artery, Internal
;
Constriction, Pathologic
;
Diffusion
;
Hemodynamics
;
Humans
;
Linear Models
;
Retrospective Studies
;
Stroke*
;
Ultrasonography
;
Ultrasonography, Doppler*
7.Diagnostic Usefulness of Computed Tomography Compared to Conventional Chest X-Ray for Chest Trauma Patients.
Kyu Ill CHOI ; Kang Suk SEO ; Hyun Wook RYOO ; Jung Bae PARK ; Jae Myung CHUNG ; Jae Yoon AHN ; Seong Won KANG ; Jae Hyuck YI
Journal of the Korean Society of Traumatology 2009;22(2):142-147
PURPOSE: Early diagnosis and management of therapeutic interventions are very important in chest trauma. Conventional chest X-rays (CXR) and computed tomography (CT) are the diagnostic tools that can be quickly implemented for chest trauma patients in the emergency department. In this study, the usefulness of the CT as a diagnostic measurement was examined by analyzing the ability to detect thoracic injuries in trauma patients who had visited the emergency department and undergone CXR and CT. METHODS: This study involved 84 patients who had visited the emergency department due to chest trauma and who had undergone both CXR and CT during their diagnostic process. The patients' characteristics and early vital signs were examined through a retrospective analysis of their medical records, and the CXR and the CT saved in the Picture Archiving Communication System (PACS) were examined by a radiologist and an emergency physician to verify whether or not a lesion was present. RESULTS: Pneumothoraxes, hemothoraxes, pneumomediastina, pulmonary lacerations, rib fractures, vertebral fractures, chest wall contusions, and subcutaneous emphysema were prevalently found in a statistically meaningful way (p<0.05) on the CT. Even though their statistical significance couldn't be verified, other disorders, including aortic injury, were more prevalently found by CT than by CXR. CONCLUSION: CT implemented for chest trauma patients visiting the emergency department allowed disorders that couldn't be found on CXR to be verified, which helped us to could accurately evaluate patients.
Contusions
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Early Diagnosis
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Emergencies
;
Hemothorax
;
Humans
;
Lacerations
;
Medical Records
;
Pneumothorax
;
Retrospective Studies
;
Rib Fractures
;
Subcutaneous Emphysema
;
Thoracic Injuries
;
Thoracic Wall
;
Thorax
;
Tomography, X-Ray
;
Vital Signs
8.Prediction of Chronicity of Anterior Cruciate Ligament Tear Using MRI Findings.
Jong Pil YOON ; Jae Ho YOO ; Chong Bum CHANG ; Sung Ju KIM ; Ja Young CHOI ; Jae Hyuck YI ; Tae Kyun KIM
Clinics in Orthopedic Surgery 2013;5(1):19-25
BACKGROUND: The estimation of anterior cruciate ligament (ACL) tear is required in certain cases involving legal and financial administration, such as the worker's compensation and/or insurance. The aim of this study is to propose and evaluate a quantitative evaluation instrument to estimate the chronicity of the ACL tear, based on the four magnetic resonance imaging (MRI) findings. METHODS: One hundred and fifty one cases of complete ACL tear confirmed by arthroscopy were divided into 4 groups according to the time from ACL injury to MRI acquisition: acute (< 6 weeks), subacute (6 weeks to 3 months), intermediate (3 months to 1 year), and chronic (> 1 year). The four MRI findings including ACL morphology, joint effusion, posterior cruciate ligament angle, and bone bruise were analyzed for temporal changes among the 4 groups. Binary logistic regression equations were formulated using the MRI findings to estimate the chronicity of ACL tear in a quantitative manner, and the accuracy of the formulated regression equations was evaluated. RESULTS: The four MRI findings showed substantial temporal correlation with the time-limits of ACL injury to be included in the estimation model. Three predictive binary logistic equations estimated the probability of the ACL injury for the three cutoff time-limits of 6 weeks, 3 months, and 1 year with accuracies of 82.1%, 89.4%, and 89.4%, respectively. CONCLUSIONS: A series of predictive logistic equations were formulated to estimate the chronicity of ACL tear using 4 MRI findings with chronological significance.
Adolescent
;
Adult
;
Anterior Cruciate Ligament/*injuries/surgery
;
Child
;
Chronic Disease
;
Female
;
Humans
;
Knee Injuries/*diagnosis
;
Logistic Models
;
Magnetic Resonance Imaging
;
Male
;
Middle Aged
;
Retrospective Studies
;
Time Factors
;
Young Adult
9.Xanthogranulomatous Pancreatitis Mimicking a Pancreatic Cancer on CT and MRI: a Case Report and Literature Review.
Jong Min PARK ; Seung Hyun CHO ; Han Ik BAE ; An Na SEO ; Hye Jung KIM ; So Mi LEE ; Jae Hyuck YI ; Jae Kwang LIM ; Chang Min CHO
Investigative Magnetic Resonance Imaging 2016;20(3):185-190
Xanthogranulomatous inflammation is a rare benign condition involving various organs. However, its pancreas involvement is very rare. To the best of our knowledge, only 17 cases have been described in the literature. Interestingly, all reported 17 cases due to various causes underwent surgical resection. Here, we present a case of xanthogranulomatous pancreatitis in a 63-year-old man. He presented with epigastric pain and solid mass mimicking ductal adenocarcinoma in the body and tail of pancreas on magnetic resonance imaging. The patient was diagnosed as xanthogranulomatous pancreatitis via endoscopic ultrasound-guided fine needle aspiration. After that, he was followed up and monitored without any surgical treatment. Here, we show imaging findings and serial image changes of xanthogranulomatous pancreatitis for this case.
Adenocarcinoma
;
Endoscopic Ultrasound-Guided Fine Needle Aspiration
;
Humans
;
Inflammation
;
Magnetic Resonance Imaging*
;
Middle Aged
;
Pancreas
;
Pancreatic Neoplasms*
;
Pancreatitis*
;
Tail
10.Venous Thromboembolism in Korean Patients Undergoing Major Orthopedic Surgery: A Prospective Observational Study using Computed Tomographic (CT) Pulmonary Angiography and Indirect CT Venography.
Seung Ick CHA ; Shin Yeop LEE ; Chang Ho KIM ; Jae Yong PARK ; Tae Hoon JUNG ; Jae Hyuck YI ; Jongmin LEE ; Seung HUH ; Hyun Joo LEE ; Shin Yoon KIM
Journal of Korean Medical Science 2010;25(1):28-34
In patients undergoing major orthopedic surgery, data of deep venous thrombosis (DVT) and pulmonary embolism (PE) are lacking as studied by computed tomographic (CT) pulmonary angiography and indirect CT venography (CTPA-CTV). A prospective observational study was performed for 363 Korean patients undergoing major orthopedic surgery to determine the incidence of venous thromboembolism (VTE), especially proximal DVT and PE. The incidence of VTE was 16.3% (n=59). Of them, 8 patients (2.2%) were symptomatic. The rate of VTE was the highest in patients who underwent total knee replacement (40.4%), followed by hip fracture surgery (16.4%), and total hip replacement (8.7%; P<0.001). The incidence of PE was 6.6% (n=24). Of them, 4 patients (1.1%) were symptomatic. Forty-one patients (11.3%) were in the proximal DVT or PE group. Based on multivariate analysis, total knee replacement and age > or =65 yr were significant risk factors for proximal DVT or PE in patients undergoing major orthopedic surgery (odds ratio [OR], 2.4; 95% confidence interval [CI], 1.1-5.1; P=0.025; and OR, 2.1; 95% CI, 1.0-4.4; P=0.046, respectively). Taken together, the overall incidence of PE was 6.6% and rate of symptomatic PE rate was 1.1%. Knee joint replacement and age > or =65 yr were significant risk factors for proximal DVT or PE.
Aged
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Arthroplasty, Replacement, Knee
;
Female
;
Humans
;
Male
;
Middle Aged
;
Odds Ratio
;
*Orthopedic Procedures
;
Phlebography
;
Prospective Studies
;
Pulmonary Artery/radiography
;
Pulmonary Embolism/radiography/surgery
;
Republic of Korea
;
Risk Factors
;
Tomography, X-Ray Computed
;
Venous Thromboembolism/*epidemiology/*radiography
;
Venous Thrombosis/radiography/surgery