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Woo Mok Byun 17 Articles
Bilateral Medial Medullary Infarction Demonstrated by Diffusion-Weighted Imaging: Case Report.
Han Won Jang, Woo Mok Byun
Yeungnam Univ J Med. 2009;26(1):70-73.   Published online June 30, 2009
DOI: https://doi.org/10.12701/yujm.2009.26.1.70
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AbstractAbstract PDF
A 78-year-old woman presented with weakness of the extremities, dysarthria, dizziness, and sensory impairment. Magnetic resonance imaging showed acute bilateral medial medullary infarction. Contrast enhanced magnetic resonance angiography demonstrated stenosis or occlusion of both intracranial vertebral arteries. We present a rare case of bilateral medullary infarction seen on diffusion-weighted imaging.

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  • Bilateral Medial Medullary Infarction (Dejerene Syndrome) Patient Suffering from Quadriplegia Treated by Korean Traditional Medicine: a Case Report
    Yoo-na Lee, Yu-min An, Kyungmin Baek, Woo-seok Jang
    The Journal of Internal Korean Medicine.2020; 41(5): 902.     CrossRef
Endovascular Treatment of Ruptured Dissecting Basilar Artery Aneurysm: One Case Report
Woo Mok Byun, Bok Hwan Park
Yeungnam Univ J Med. 2007;24(2 Suppl):S636-641.   Published online December 31, 2007
DOI: https://doi.org/10.12701/yujm.2007.24.2S.S636
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AbstractAbstract PDF
Optimal treatment for ruptured dissecting basilar artery aneurysms in patients presenting with SAH is endovascular method using stent placement and coil embolization. We report a case (52-year-old woman) of ruptured dissecting aneurysm of the basilar artery which was treated with stent placement and coil embolization.
Supratentorial Leptomeningeal Hemangioblstoma -Case Report-
Han Won Jang, Woo Mok Byun, Jae Kyo Lee, Jae Ho Cho, Kil Ho Cho, Mi Soo Hwang, Bok Hwan Park, Joon Hyuk Choi
Yeungnam Univ J Med. 2007;24(2 Suppl):S770-774.   Published online December 31, 2007
DOI: https://doi.org/10.12701/yujm.2007.24.2S.S770
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AbstractAbstract PDF
Hemangioblastoma is a benign tumor that most commonly occurs in the cerebellum and associated with von Hippel-Lindau (VHL) disease. Supratentorial hemanigoblastomas are exceptionally rare. We describe the magnetic resonance imaging (MRI) and histopathologic findings of a supratentorial leptomeningeal hemangioblastoma.

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  • Sporadic supratentorial hemangioblastoma with meningeal affection: A case report and literature review
    Juan Francisco Sánchez-Ortega, Marta Claramonte, Mónica Martín, Juan Calatayud-Pérez
    Surgical Neurology International.2021; 12: 394.     CrossRef
  • Supratentorial hemangioblastomas in von Hippel–Lindau wild-type patients – case series and literature review
    Luís Rocha, Carolina Noronha, Ricardo Taipa, Joaquim Reis, Mário Gomes, Ernesto Carvalho
    International Journal of Neuroscience.2018; 128(3): 295.     CrossRef
  • Meningeal Supratentorial Hemangioblastoma in a Patient with Von Hippel-Lindau Disease Mimicking Angioblastic Menigioma
    Hoon Kim, Ik-Seong Park, Kwang Wook Jo
    Journal of Korean Neurosurgical Society.2013; 54(5): 415.     CrossRef
  • Supratentorial hemangioblastoma: clinical features, prognosis, and predictive value of location for von Hippel-Lindau disease
    S. A. Mills, M. C. Oh, M. J. Rutkowski, M. E. Sughrue, I. J. Barani, A. T. Parsa
    Neuro-Oncology.2012; 14(8): 1097.     CrossRef
Subcutaneous Emphysema and Inflammation of the Neck after Tracheal Puncture by an Intubating Stylet.
Gul Jung, Woo Mok Byun, Hyung Jun Lim, Jong Gyun Kim, Dong Min Kwak, Deok Hee Lee, Sae Yeon Kim, Sun Ok Song, Il Sook Seo, Dae Lim Jee, Heung Dae Kim, Dae Pal Park
Yeungnam Univ J Med. 2007;24(2):344-344.   Published online December 31, 2007
DOI: https://doi.org/10.12701/yujm.2007.24.2.344
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AbstractAbstract PDF
Laryngo-tracheal perforation caused by the use of a stylet during tracheal intubation is a rare complication. We present a case of subcutaneous emphysema and connective tissue inflammation after tracheal intubation. The patient was a 41-year-old male undergoing general anesthesia for an appendectomy. The intubation was difficult during laryngoscopy (Cormack-Lehane Grade III). An assistant provided an endotracheal tube with a stylet inside while the laryngoscope was in place. During intubation, a short, dull sound was heard with a sudden loss of resistance after the distal tip of the endotracheal tube passed the rima glottis. A sonogram and computerized tomography revealed subcutaneous emphysema from the neck to the upper mediastinum and fluid collection between the trachea and the thyroid. This lesion appeared to have been caused by the protruded, loose stylet. Anesthesiologists should be aware of the damage a loose stylet protruding beyond the tip of the endotracheal tube can cause.
In Vivo and In Vitro Studies of the Steady State Free Precession-Diffusion-Weighted MR Imagings on Low b-value: Validation and Application to Bone Marrow Pathology.
Woo Mok Byun
Yeungnam Univ J Med. 2007;24(2):119-128.   Published online December 31, 2007
DOI: https://doi.org/10.12701/yujm.2007.24.2.119
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PURPOSE: The purpose of this study was a phantom study to measure the diffusion properties of water molecules by steady-state free precession diffusion-weighted imaging (SSFP-DWI) with a low b-value and to determine if this sequence might be useful for application to the evaluation of bone marrow pathology. MATERIALS AND METHODS: 1. The phantom study: A phantom study using two diffusion weighted sequences for the evaluation of the diffusion coefficient was performed. Three water-containing cylinders at different temperatures were designed: phantom A was 3degrees C, B was 23degrees C and C was 63degrees C. Both SSFP and echo planar imaging (EPI) sequences (b-value: 1000 s/mm2) were performed for comparison of the diffusion properties. The Signal to noise ratios (SNR) and apparent diffusion coefficient (ADC) values of the three phantoms using each diffusion-weighted sequence were assessed. 2. The Clinical study: SSFP-DWI was performed in 28 patients [sacral insufficiency fractures (10), osteoporotic lumbar compression fractures (10), malignant compression fractures (8)]. To measure the ADC maps, a diffusion-weighted single shot stimulated echo-acquisition mode sequence (650s/ mm2) was obtained using the same 1.5-T MR imager RESULTS: For the phantom study, the signal intensity on the SSFP as well as the classic EPI-based DWI was decreased as the temperature increased in phantom A to C. The ADC values of the phantoms on EPI-DWI were 0.13x10(-3) mm2/s in phantom A, 0.22x10(-3) mm2/s in B and 0.37x10(-3) mm2/s. in C. The SSFP can be regarded as a DWI sequence in view of the series of signal decreases. CONCLUSION: Bone marrow pathologies with different diffusion coefficients were evaluated by SSFP-DWI. All benign fractures were hypointense compared to the adjacent normal bone marrow where as the malignant fractures were hyperintense compared to the adjacent normal bone marrow.
Evidence of Cortical Reorganization in a Monoparetic Patient with Cerebral Palsy Detected by Combined Functional MRI and TMS.
Yong Hyun Kwon, Sung Ho Jang, Mi Young Lee, Woo Mok Byun, Yoon Woo Cho, Sang Ho Ahn
Yeungnam Univ J Med. 2005;22(1):96-103.   Published online June 30, 2005
DOI: https://doi.org/10.12701/yujm.2005.22.1.96
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AbstractAbstract PDF
The motor recovery mechanism of a 21-year-old male monoparetic patient with cerebral palsy, who had complained of a mild weakness on his right hand since infancy, was examined using functional Magnetic Resonance Imaging (fMRI) and Transcranial Magnetic Stimulation (TMS). The patient showed mild motor impairment on the right hand. MRI located the main lesion on the left precentral knob of the brain. fMRI was performed on this patient as well as 8 control subjects using the Blood Oxygen Level Dependent technique at 1.5 T with a standard head coil. The motor activation task consisted of finger flexion- extension exercises at 1 Hz cycles. TMS was carried out using a round coil. The anterior portion of the coil was applied tangentially to the scalp at a 1.0 cm separation. Magnetic stimulation was carried out with the maximal output. The Motor Evoked Potentials (MEPs) from both Abductor Pollicis Brevis muscles (APB) were obtained simultaneously. fMRI revealed that the unaffected (right) primary sensori-motor cortex (SM1), which was centered on precentral knob, was activated by the hand movements of the control subjects as well as by the unaffected (left) hand movements of the patient. However, the affected (right) hand movements of the patient activated the medial portion of the injured precentral knob of the left SM1. The optimal scalp site for the affected (right) APB was located at 1 cm medial to that of the unaffected (left) APB. When the optimal scalp site was stimulated, the MEP characteristics from the affected (right) APB showed a delayed latency, lower amplitude, and a distorted figure compared with that of the unaffected (left) APB. Therefore, the motor function of the affected (right) hand was shown to be reorganized in the medial portion of the injured precentral knob.
High-Resolusion Magnetic Resonance Imaging of Carotid Atherosclerotic Plaque.
Woo Mok Byun, Jae Ho Cho
Yeungnam Univ J Med. 2004;21(2):143-150.   Published online December 31, 2004
DOI: https://doi.org/10.12701/yujm.2004.21.2.143
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A thromboembolic stroke is believed to be precipitated by a rupture of vulnerable atheromatous plaques. Until recently the assessment of a further risk of stroke in high-risk patients in whom atherosclerosis has presented with a transient ischaemic attack (TIA), has been confined to a quantitative assessment of the luminal patency of the internal carotid artery. These traditional stratification parameters are no longer believed to be the most accurate predictors of a thrombo-embolism. This is because the process of vessel wall remodeling can maintain a luminal patency, and consequently, quite large friable plaques may remain unidentified. Accordingly, there is a need for an improved risk assessment. The fibrous cap of a vulnerable plaque is thinner, and an intraplaque hemorrhage and inflammation can occur during the development of atherosclerotic plaque. Several imaging methods for identifying vulnerable plaques have been developed. Recently, high resolution magnetic resonance (MR) imaging has emerged as an accurate non-invasive tool that can characterize the carotid plaque components in vivo. A High resolution carotid magnetic resonance is capable of distinguishing an intact, thick fibrous cap from a thin and ruptured cap in carotid plaque. In addition, a plaque MR can identify the active inflammation and detect a hemorrhage. High resolution carotid MR imaging is a valuable noninvasive method for quantifying the plaque components and identifying vulnerable plaque.
MRI Findings of Neuro-Behcet' Disease.
Han Won Jang, Woo Mok Byun, Kil Ho Cho, Mi Soo Hwang
Yeungnam Univ J Med. 1998;15(2):306-315.   Published online December 31, 1998
DOI: https://doi.org/10.12701/yujm.1998.15.2.306
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AbstractAbstract PDF
MR findings in nine patients(three female, six male) with neuroBehcet's disease were retrospectively analyzed. NeuroBehcet's disease was diagnosed on the basis of typical clinical symptoms. Involved site, pattern, signal intensity, and contrast enhancement pattern on MRI were evaluated. In addition, follow up MR imaging was performed in four patients. The midbrain(7/9), internal capsule(7/9), pons(6/9), thalamus(6/9), basal ganglia(5/9), middle cerebella peduncle(4/9), medulla oblongata(2/9), and subcortical white matter(2/9) are involved on MRI. The size of lesions were 1cm to 3cm and their margin was ill-defined and patchy. Inhomogeneous high signal intensity on the T2-weighted images and low signal intensity on T1-weighted images was seen respectvely. In four of nine cases, there was focal enhancement. On follow up MR imaging, improvement or recurrance of the lesions was found. Also in two cases of follow up cases there was artophy in brainstem and/or middle cerebellar peduncles. In conclusion, MR imaging with systemic clinical symptoms is useful for diagnosing neuro-Behcet's disease.
Radiologic Findings of Uncommon Breast Cancer.
Jae Woon Kim, Jae Hong An, Mi Soo Hwang, Jae Kyo Lee, Woo Mok Byun
Yeungnam Univ J Med. 1998;15(1):114-124.   Published online June 30, 1998
DOI: https://doi.org/10.12701/yujm.1998.15.1.114
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AbstractAbstract PDF
We analyzed the mammographic (n=21) findings (location, margin, shape, cluster microcalcifications, size, multiplicity) and ultrasonographic (n=12) findings (shape, border, internal echo, boundary echo, posterior echo, lateral echo, width/depth ratio) to evaluate specific radiologic findings of histopathologically proved uncommon breast cancer. The mammographic findings (n=21) are as follow; 1) single; 16, multiple; 5 2) margin (smooth; 13, irregular; 4, spiculated; 4) 3) shape (round and ovoid; 9, lobulated; 8, irregular; 4) 4) cluster microcalcifications (abscent; 20, present; 1) 5) size (1-3cm; 18, 3-5cm; 2, 5cm> ; 1) 6) location (UOQ; 13, UIQ; 4, LIQ; 3, LOQ; 1). The ultrasonographic findings (n=12) are as follow; 1) shape (round to oval; 5, lobulated; 5, irregular; 2) 2) border (smooth even; 9, rough uneven; 3) 3) internal echo (fine homogeneous; 5, coarse heterogeneous; 7) 4) boundary echo (regular fine; 4, irregular thick; 8) 5) posterior echo (enhanced; 11, no change; 1) 6) lateral echo (marked; 7, nonexistent; 5) 7) width/depth ratio (1.5> 1, 1.0-1.5; 7, 1.0< ; 4). Uncommon breast cancer show benign nature on mammogram, but malignant nature on ultrasonogram (especially boundary echo, internal echo, width/depth ratio)
The Treatment of Giant Middle Artery Aneurysm with MDS Coil: Case Report.
Gwang Shik Choi, Sung Ho Kim, Jung Ho Bae, O Lyong Kim, Byung Youn Choi, Soo Ho Cho, Woo Mok Byun
Yeungnam Univ J Med. 1997;14(1):237-244.   Published online June 30, 1997
DOI: https://doi.org/10.12701/yujm.1997.14.1.237
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AbstractAbstract PDF
A 14-year old boy was admitted with stuporous mentality. CT scan, MRI and cerebral angiogram revealed SAH and a giant aneurysm of right middle cerebral artery(4x5x5.3cm). To minimize surgical risk, endovascular treatment was done with MDS(mechanical detachable system)-spiral coil. Follow up MRI showed intraluminal thrombus formation of the aneurysm.
CT Findings of Bronchogenic Cyst
Hyun Cheol Cho, Yong Woo Lee, Mi Soo Hwang, Kil Ho Cho, Woo Mok Byun, Jae Ho Cho, Jae Chun Chang
Yeungnam Univ J Med. 1995;12(2):226-236.   Published online December 31, 1995
DOI: https://doi.org/10.12701/yujm.1995.12.2.226
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AbstractAbstract PDF
We studied to evaluate CT characteristics of bronchogenic cysts. We retrospectively evaluated CT of 11 patients with pathologically proved bronchogenic cyst. Precontrast and postcontrast CT scan was performed in all. We analyzed CT with viewpoints of location, size, attenuation on pre- and postcontrast scan, and calcification. Three of 11 bronchogenic cysts were intrapulmonary in location and eight were located in the mediastinum. Two of 3 intrapulmonary bronchogenic cysts were located in the right lower lobe, and the remaining one was left lower lobe. Intrapulmonary bronchogenic cysts ranged from 6cm to 12cm in diameter (average, 9.7 cm). On Cr, intrapulmonary bronchogenic cysts appeared as thin-wall air cyst, homogenous water attenuation and soft tissue attenuation with air bubble respectively. Mediastinal bronchogenic cysts were located in posterior mediastinum (n=5), superior mediastinum (n=2), middle mediastinum (n=1) respectively. These cysts ranged in size from 3cm to 8cm in diameter (average 5.0 cm). On CT, five showed homogenous water attenuation, two soft tissue attenuation similar to that of muscle, one air-fluid level. Calcification or contrast enhancement was not detected in any cases. On operative findings, all of intrapulmonary bronchogenic cysts contained dirty pus-like material and all of mediastinal bronchogenic cysts contained whitish or yellowish mucus material. Bronchogenic cysts showed homogenous water density in many cases, homogenous soft tissue density, air-fluid level and air-filled cyst. The constellation of CT findings may be helpful in the diagnosis and Differentiation of bronchogenic cyst.
Diagnostic Reliability & Case Reports Of The Dynamic MRI For Temporomandibular Joint Disease
Jin Ho Park, Byung Rho Chin, Woo Mok Byun
Yeungnam Univ J Med. 1995;12(1):141-148.   Published online June 30, 1995
DOI: https://doi.org/10.12701/yujm.1995.12.1.141
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AbstractAbstract PDF
The Magnetic resonance imaging has been used widely to evaluate the disk position without any interruption of the TMJ structures, and the dynamic MRI presenting computed serial imaging or the video-recorded simulation images is thought to be very effective to evaluate the disk position under function. This is to study the correlation between the clinical diagnosis and the findings of dynamic MRI for diagnosis of internal derangement of the 7 patients were examined clinically, and the movement of TMJ meniscus was reviewed in the dynamic MRI. MRI was very reliable to diagnose the amount of anterior displacement of articular disc, the structural abnormality of temporomandibular joint, the cause of functional limitation, and to differentiate the muscle related pain & dysfunction
Computed tomographic findings of malignant ovarian germ cell tumors
Woo Mok Byun, Kil Ho Cho, Bok Hwan Park
Yeungnam Univ J Med. 1993;10(2):417-422.   Published online December 31, 1993
DOI: https://doi.org/10.12701/yujm.1993.10.2.417
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AbstractAbstract PDF
Diagnosis of malignant germ cell tumors of the ovary is usually difficult because many ovarian neoplasms have similar clinical and radiologic manifestations. We reviewed retrospectively 12 cases of ovarian malignant germ cell tumor and evaluated with respect to size, mass characteristics on computed tomography for differential diagnosis. Endodermal sinus tumors were mainly cystic mass with some solid component and septations. Immature teratomas showed typical manifestations, such as fatty tissue, calcifications, cysts, and irregular shaped soft tissue densities. Dysgerminoma was mainly solid mass without cystic component, and mixed germ cell tumor showed nonspecific manifestations. All cases were relatively large in size, and young in age. In conclusion, CT findings of malignant germ cell tumors are helpful in differential diagnosis
Antibacterial Activity of Ceftizoxime Against Gram Negative Enteric Bacteria in vitro and in vivo.
Woo Mok Byun, Jae Chun Chang, Bok Hwan Park, Hee Sun Kim, Sung Kwang Kim
Yeungnam Univ J Med. 1989;6(1):59-68.   Published online June 30, 1989
DOI: https://doi.org/10.12701/yujm.1989.6.1.59
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AbstractAbstract PDF
Ceftizoxime sodium is a new synthetic β-lactam antibiotic combining potent antibacterial activity with high stability to a wide range of bacterial β-lactamase. This experiment was achieved to evaluate the antibacterial activities of ceftizoxime sodium against. Gram negative enteric bacteria isolated from in outpatient visiting Yeungnam university hospital and to study the emergence of drug induced bacterial variants which resist to ceftizoxime in vitro. The antibacterial activity of the ceftizoxime was compared with that of antibiotics and its effect on population of normal intestinal flora in mice was observed. The results are summarized as follows: 1. Highly effective antibacterial activity of ceftizoxime against Gram negative enteric bacilli was demonstrated and this antibacterial activity was superior to that of ampicillin. 2. Several test strains shows multiple antibiotic resistance. Among 15 strains of Escherichia coli, 1 strain was resistant to ampicillin, cefadroxil, gentamicin, tetracycline, and 2 strains were resistant to ampicillin, cefadroxil, tetracycline, five strains of Escherichia coli and Enterobacter cloacae was resistant to ampicillin, tetracycline and Shigella dysenteriae was resistant to ampicillin, gentamicin, tetracycline. 3. The frequency of in vitro emergence of resistant variants among ceftizoxime sensitive bacteria in the presence of increasing concentrations of the compound was found to be low. 4. Plasmid was isolated in 6 of 9 strains (6 strains of Escherichia coli, Shigella dysenteriae, Enterobacter cloacae and Salmonella typhi). That showed different antibiotic resistance. They were 5 strains of Escherichia coli and 1 strain of Shigella dysenteriae. However, plasmid could not be considered as a hallmark for antibiotic resistance by this Further studies with curing experiment are to be accomplished for this purpose. 5. Changes in the bacterial count of normal intestinal flora following 25 mg/kg/day administration of ceftizoxime over 5 consecutive days were not significant. In conclusion, ceftizoxime appeared to be a drug of choice in the treatment of Gram negative enteric bacilli infection.
Radiologic Evaluation of Intraabdomenal Masses in Childhood.
Hyuk Po Kwon, Woo Mok Byun, Mi Soo Hwang, Son Yong Kim, Jae Chun Chang, Bok Hwan Park
Yeungnam Univ J Med. 1988;5(1):33-42.   Published online June 30, 1988
DOI: https://doi.org/10.12701/yujm.1988.5.1.33
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AbstractAbstract PDF
The abdominal tumors in children are different from those of adult. These tumors are the third most common one, preceded by leukemia and brain tumors, in children under 15 years. X-ray examination is the most important method among diagnostic approaches. The role of diagnostic imaging is to identify the precise anatomic location and extent of pathologic process with the minimal number of imaging procedures. 23 cases of abdominal tumors were reviewed in respect of age incidence, site of origin, radiologic findings. The results are briefly summarized as follows: 1. Neuroblastoma was the most common (6 cases) and wilm's tumor (5 cases), choledocal cyst (4 cases), ovarian mass (3 cases), hydronephrosis (2 cases), were descending order in frequency. 2. The most common site was retroperitoneum (60%) Kidney was the single most common site of origin. 3. Radiologic findings. The most common findings of plain radiography was ill defined soft tissue mass and this method was helpful in the presence of calcification especially in neuroblastoma. Ultrasonographic pattern was anechoic (cystic), echoic or mixed pattern, but this method provide less precise anatomical details, nevertheless Ultrasonography was particularly useful imaging modality for the pediatric abdominal tumors. IVP findings were renal displacement, caliceopelvic system distortion or nonvisualization of kidney, these information was helpful in determining the location of tumors. CT scan showed homogenous or inhomogeneous, cystic or solid, mass with their anatomic location. 4. Ultrasonography was the most widely used specific diagnostic method, but had limited value in detecting the anatomic location of tumors. CT scan was superior to ultrasound for determining the extent of tumors.
A case of Renal Vein Thorombosis Associated with Nephrotic Syndrome.
Kyung Hwa Jung, Woo Mok Byun, Jae Chun Chang
Yeungnam Univ J Med. 1987;4(2):179-184.   Published online December 31, 1987
DOI: https://doi.org/10.12701/yujm.1987.4.2.179
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AbstractAbstract PDF
Renal vein thrombosis is usually a complication of multiple underlying renal disease rather than primary process. High incidence of renal vein thrombosis in patients with nephritic syndrome, which suggest the nephrotic syndrome play a paramount role in the genesis of renal vein thrombosis or thromboembolic phenomena. But these are likely to relationship of “egg and chicken”, and then we cannot determine what is primary of these. Recently authors experienced a case that was questioned renal vein thrombosis with nephrotic-syndrome clinically, laboratory and preliminary radiologically, and this case in confirmed by selective left renal venography. Here we report a case of renal vein thrombosis with nephrotic syndrome which successfully managed with oral anticoagulants and reviewed literatures.
Radiologic Analysis of Congenital Origin Intestinal Obstruction in Neonate and Childhood.
Mi Soo Hwang, Woo Mok Byun, Son Yong Kim, Jae Chun Chang
Yeungnam Univ J Med. 1987;4(1):33-42.   Published online August 31, 1987
DOI: https://doi.org/10.12701/yujm.1987.4.1.33
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AbstractAbstract PDF
Congenital origin intestinal obstruction are important disease due to required emergency operation. So accurate and rapid diagnosis needed for decreased mortality and morbidity. Radiologic must defect to accurate obstruction site and also associated other congenital anomalies. And also embryological basis are very important role to the diagnosis of these diseases. We were analyzed radiologically and clinically 25 cases with congenital origin intestinal obstruction with review of literature. 1. Hypertrophic pyloric stenosis 6 cases, midgut malrotation 4 cases, congenital megacolon 8 cases, imperforated anus 5 cases, ileal atresia 1 case and duodenal atresia 1 case. 2. Male and female radio was 16:9. Especially on hypertrophic pyloric stenosis, 5 cases were male infants. 3. All cases of hypertrophic pyloric stenosis represented string sign and also pyloric beak sign, shoulder sign on UGI. 4. 1 case duodenal atresia showed double bubble sign on simple abdomen x-ray and ileal atresia showed mechanical small bowel obstruction sign with microcolon. 5. On midgut malrotaton, cecum was located in right upper abdomen on 4 cases. And 2 cases were associated with Ladd's band, 1 case with volvulus and 1 case with mesenteric defect. 6. Involved site of all congenital megacolon were localized to rectosigmoid colon. 7. On 5 cases imperforated anus, 3 cases were low type and 2 case high type. Rectoperitoneal and rectourogenital fistula were demonstrated on 4 cases.

JYMS : Journal of Yeungnam Medical Science