1.MR imaging of synovial sarcoma.
Jin Joo LE ; Hong Sik BYUN ; Kie Hwan KIM ; Il Ju YOON ; Soo Yil CHIN
Journal of the Korean Radiological Society 1993;29(5):1057-1061
MR images of seven patients with histologically documented synovial sarcoma were reviewed to find the suggestive or pathognomonic findings of the disease. MR appearance of the tumor was inhomogeneous, multiseptated mass with various degree of internal septation and infiltrative tumor margin. The signal intensity of the mass was slightly hyperintense relative to muscle on T1-weighted image and hyperintense relative to subcutaneous fatty tissue on T2-weighted image.
Adipose Tissue
;
Humans
;
Magnetic Resonance Imaging*
;
Sarcoma, Synovial*
2.Clinical experiences with total nutrient admixture in 26 cases.
Yong Soon KWON ; Eun Jin CHOI ; Soon Ok BYUN ; Ji Sub OH ; Hwan Seon RYU ; Charles D SANDS
Journal of the Korean Pediatric Society 1992;35(7):921-932
No abstract available.
Parenteral Nutrition, Total
3.Left External Iliac and Common Femoral Artery Occlusion Following Blunt Abdominal Trauma without Associated Bone Injury.
Chun Sung BYUN ; Il Hwan PARK ; Hye jin DO ; Keum Seok BAE ; Joong Hwan OH
The Korean Journal of Thoracic and Cardiovascular Surgery 2015;48(3):214-216
Blunt abdominal trauma may cause peripheral vascular injuries. However, blunt abdominal trauma rarely results in injuries to the external iliac and common femoral arteries, which often stem from regional bone fractures. Here, we present the case of a patient who had experienced trauma in the lower abdominal and groin area three months before presenting to the hospital, but these injuries did not involve bone fractures and had been managed conservatively. The patient came to the hospital because of left lower leg claudication that gradually became severe. Computed tomography angiography confirmed total occlusion of the external iliac and common femoral arteries. The patient underwent femorofemoral bypass grafting and was discharged uneventfully.
Angiography
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Femoral Artery*
;
Fractures, Bone
;
Groin
;
Humans
;
Leg
;
Transplants
;
Vascular System Injuries
4.Diagnosis and Operation Results for Chronic Lateral Ankle Instability with Subtle Cavovarus Deformity and a Peek-A-Boo Heel Sign
Dong Woo SHIM ; Jae Wan SUH ; Kwang Hwan PARK ; Jin Woo LEE ; Junwoo BYUN ; Seung Hwan HAN
Yonsei Medical Journal 2020;61(7):635-639
Cavovarus deformity is considered an anatomical risk factor for chronic lateral ankle instability (CLAI). However, subtle deformity can be difficult to detect, and its correction is controversial. The current study aimed to evaluate clinical and radiographic outcomes of a modified Broström procedure (MBP) with additional procedures for CLAI with subtle cavovarus deformity and a positive peek-a-boo heel sign. We reviewed the records of 15 patients who underwent MBP with additional procedures for CLAI with a positive peek-a-boo heel sign between August 2009 and April 2015. Consecutive physical and radiographic examinations were performed. The visual analog scale (VAS) for pain, the American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot score, and the Karlsson-Peterson (KP) ankle score were applied to assess clinical outcomes. Weight bearing radiographs, hindfoot alignment view, and ankle stress radiographs were also examined. The mean follow-up period was 58.5 months. Calcaneal lateral closing wedge osteotomy was performed in seven patients to correct fixed hindfoot varus, and first metatarsal dorsiflexion osteotomy was performed in 11 patients to correct plantarflexion of the first ray. Three patients underwent both procedures. Mean VAS, AOFAS, and KP ankle scores improved significantly (p=0.001), and instability did not recur. Radiographically, all stress parameters improved significantly (p=0.007). Simultaneous correction of a positive peek-a-boo heel sign and cavovarus deformity with MBP for CLAI improves clinical outcomes and prevents recurrent instability. A comprehensive evaluation and cautious approach for subtle cavovarus deformity should be followed when treating patients with CLAI. This trial is registered on Clinical Research Information Service (CRiS, KCT0003287).
5.Usefulness of Three Dimensional Proset MR Images for Diagnosis of Symptomatic L5-S1 Foraminal and Extraforaminal Stenosis.
Sang Woo KIM ; Chang Hwan KIM ; Min Su KIM ; Young Jin JUNG ; Woo Mok BYUN
Journal of Korean Neurosurgical Society 2013;54(1):30-33
OBJECTIVE: To suggest a new useful diagnostic technique, principles of the selective excitation technique-magnetic resonance images (Proset-MRI), and to know the precise radiologic findings that can prove symptomatic foraminal and extraforaminal stenosis at L5-S1. METHODS: Nineteen patients with symptomatic L5-S1 stenosis were checked by Proset-MRI. Four patients were performed decompressive surgery and 15 patients were performed selective nerve root block (SNRB) at L5. The pain scale of patients was checked by Visual Analogue Scale (VAS) scores at the pre- and post-treatment state. RESULTS: Proset-MRI findings of patients with symptomatic stenosis are root swelling (RS) and indentation. The comparisons with VAS scores had a meaningful statistical result at each RS (p<0.01) and indentation (p<0.01). However, the findings of RS combined with indentation lacked statistical significance (p=0.0249). In addition, according to a comparison with the treatment modalities, reducing of VAS scores had statistical meaningful significance in decompressive surgery cases (p<0.01), and also in SNRB cases (p<0.01) after a 3-month follow-up period. CONCLUSION: The three dimensional Proset-MRI is very useful and sensitive technique to diagnose the symptomatic foraminal and extraforaminal stenosis at L5-S1.
Constriction, Pathologic
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Humans
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Magnetic Resonance Imaging
6.The Usefulness of Scoring System Distinguishing between Benign and Malignant Breast Masses on Ultrasonogram.
Won Kyu PARK ; Kyoung Kug BAE ; Jong O CHOI ; Mi Soo HWANG ; Woo Mok BYUN ; Bok Hwan PARK ; Hwa Jin LEE
Journal of the Korean Radiological Society 1997;36(5):909-914
PURPOSE: To evaluate a scoring system based on ultrasonographic findings as a means of distinguishing between benign and malignant solid breast masses. MATERIALS AND METHODS: Histopathologically confirmed benign (n=102) and malignant (n=73) breast masses which ultrasonographic findings of histopathologic masses were reviewed for shape, border, internal echo, boundary echo, posterior echo, lateral echo, and ratio of transverse to anteroposterior diameter. There were statistically significant (p < 0.001 ; chi-square test) differences in each feature for benign and malignant lesions. The findings suggesting benignancy, equivocality, and malignancy of the masses were scored as 0, 1, and 2 respectively. The scores for all features were summed for each lesion. An ROC curve was obtained. RESULTS: When the score was 6, five benign and seven malignant cases were found. Scores of 0 and 1 indicated benign masses and a score above 11, malignancy. The turning point was a score of 6, so a score above 7 suggests malignancy. CONCLUSION: A ultrasonographic scoring system can be used to characterise breast masses. A score of a mass above 7 suggests probable malignancy and a score below 5 suggests benignancy.
Breast*
;
ROC Curve
;
Ultrasonography*
7.Usefulness of Preoperative MRI in Recurrent Anorectal Fistula.
Hwa Jin LEE ; Jae Ho CHO ; Jae Woon KIM ; Bok Hwan PARK ; Mi Soo HWANG ; Min Chul SIM ; Woo Mok BYUN
Journal of the Korean Radiological Society 1997;36(4):657-660
PURPOSE: To evaluate the usefulness of preoperative MRI in the patient with recurrent anorectal fistula. MATERIALS AND METHODS: Fourteen patients with recurrent anorectal fistula underwent non-contrast MRI. In eight patients, T1-, T2- and proton-weighted images were taken in the axial, coronal and sagittal planes, and T1- andT2-weighted images taken in the axial and coronal planes were obtained from the other six. RESULTS: Fourteen cases of anorectal fistula and eight cases in which there was a combined abscess were detected. Preoperative MRI clearly showed the exact anatomical relationship with the anal sphincter, levator ani and surrounding soft tissue. In two cases in which there was fibrous scarring of the fistula tract, low signal intensities were seen on all MRI sequences. Preoperative information in the group in which only axial and coronal T1- and T2-weighted images were obtained was sufficient. CONCLUSION: Preoperative MRI in patients with recurrent anorectal fistula or suspected multiple fistulous tracts provide objective information concerning the anatomical location and extension of a fistula and combined abscess and could thus reduce the reoperation rate. An understanding of pathologic state through MRI signal intensity can help decide the most appropriate course of treatment.
Abscess
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Anal Canal
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Cicatrix
;
Fistula*
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Humans
;
Magnetic Resonance Imaging*
;
Reoperation
8.Treatment of Massive Defect in Achilles Tendon with Tendon Allograft: A Case Report.
Jung Woo LEE ; Myung Jin KIM ; Jae Hoon AHN ; Chu Hwan BYUN
Journal of Korean Foot and Ankle Society 2015;19(3):114-117
Deep infection of Achilles tendon is one of the serious complications that occur after open repair of the tendon. It sometimes leads to a very large tendon defect during the course of treatment. We report on a case of massive defect in Achilles tendon, which was successfully treated with Achilles tendon allograft and flexor hallucis longus tendon transfer.
Achilles Tendon*
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Allografts*
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Tendon Transfer
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Tendons*
9.Diagnosis and Treatment of Acute Ankle Sprain.
Journal of Korean Foot and Ankle Society 2015;19(3):81-85
Acute sprain of the ankle requires comprehensive history taking and physical examination in diagnosing the type of severity and deciding on the plan of treatment. Literature supports functional treatment as the treatment of choice for grade I and II injuries. During the acute phase, the goal of treatment focuses on controlling pain and swelling. PRICE (protection, rest, ice, compression, and elevation) is a well-established protocol at this phase. There is some evidence that application of ice and use of nonsteroidal anti-inflammatory drugs improves healing and speeds recovery. Then the functional treatment (motion restoration and strengthening exercises) is administered to progress the rehabilitation appropriately in order to facilitate healing and restore the mechanical strength and proprioception. Early mobilization has been shown to result in more rapid return to work and daily activities than immobilization. Grade III injuries still generate controversy in terms of the best management available, and more studies on early mobilization, cast immobilization, or surgery are needed. Even the Cochrane reviews published to date are not conclusive.
Ankle Injuries*
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Ankle*
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Diagnosis*
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Early Ambulation
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Ice
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Immobilization
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Physical Examination
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Proprioception
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Rehabilitation
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Return to Work
;
Sprains and Strains
10.Mesenteroaxial Volvulus in the Stomach Associated with Paraesophageal Hernia: Case Report .
Jin Hee LEE ; Yong Woon KIM ; Kyung Hwan BYUN ; Byung Ki KIM ; Se Kook KEE ; Hyung Tae KIM ; Jae Hi KIM
Journal of the Korean Radiological Society 2004;50(2):123-126
Gastric volvulus can either present as an acute or chronic symptoms according to the degree of gastric rotation and subsequent obstruction. The diagnosis of gastric volvulus is often difficult and is mainly based on imaging studies. We describe a case of mesenteroaxial gastric volvulus associated with paraesophageal hernia, well demonstrated on upper gastrointestinal (UGI) series and coronal reconstructed CT image.
Diagnosis
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Hernia, Hiatal*
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Intestinal Volvulus*
;
Stomach Volvulus
;
Stomach*