Intravertebral vacuum cleft in collapsed vertebra was considered as a typical finding of avascular necrosis. However, several authors reported some cases of intravertebral vacuum cleft in primary or secondary neoplasm, or in spondylitis emphasiging the differenhal diagnosis. MRI is known to be a useful diagnostic modality for diferentiation between benign and malignanct conditions causing vertebral collapse. We report MRI findings of two cases with intravertebral vacuum cleft diagnosed as posttraumatic collapse with avascular necrosis on radiological and clinical bases.
Diagnosis ; Magnetic Resonance Imaging ; Necrosis ; Spine ; Spondylitis ; Vacuum*

It is well known the CT is very useful in the evaluation of gallbladder carcinoma. We have studied 19 cases of gallbladder carcinoma with whole body scanner from May 1980 to Aug. 1983. 1. The sex distribution were 11 males and 8 females with over 40 years of age. 2. The computed tomographic classificications of the cases were 7 of intraluminal fungating mass(single 5 and multiple 2), 5 of mass filling the gallbladder, 5 of irregular thickened GB and 2 of mixed type, irregular thickned wall and intraluminal fungating mass. 3. CT demonstrated metastasis of other organ, 8 cases of the liver, 5 cases of the extrahepatic bile duct, 3 cases of peritoneum, 2 cases of duodenum, 1 case of the stomach, 1 case of the pancreas, and 15 cases of lymph nodes. 4. Associated diseases were6 cases of gall stone, 2 cases of clonorchiasis, 1 case of pancreatic pseudocyst, and 1 case of renal cyst.
Bile Ducts, Extrahepatic ; Clonorchiasis ; Duodenum ; Female ; Gallbladder ; Gallstones ; Humans ; Liver ; Lymph Nodes ; Male ; Neoplasm Metastasis ; Pancreas ; Pancreatic Pseudocyst ; Peritoneum ; Sex Distribution ; Stomach

CT is a valuable diagnostic modality in evaluation of bladder injury, extension of paravesical hematoma, pelvic bone fracture or injury of adjacent soft tissue although the diagnostic accuracy of bladder injury itself is lower than that of retrograde cystography. We analized CT findings in thirty cases of bladder injury or paravesical hematoma due to blunt lower abdominal or pelvic trauma and compared them with operation fildings in eight cases. IVP in eight cases and cystography in fifteen cases. The types of bladder injury were classified as contusion, intraperitoneal bladder rupture, extraperitoneal bladder rupture and combined rupture. The locations of paravesical hematoma were classified as perivesical, prevesical or combined. There was no close relationship between the types of pelvic bone fracture and distribution of paravesical hematoma. The paravesical hematomas in fifteen patients without bladder injury were located in prevesical space only. Perivesical hematomas were noted in nine of fifteen patients with bladder injury and were not noted in patients without bladder injury. Thus, we concluded that the presence of perivesical hematoma on CT is a diagnostic sign of bladder injury even though extravasation of contrast from the bladder is not identified, and if there is extraperitoneal hematoma, possibility of bladder injury or other pelvic trauma should be considered.
Contusions ; Hematoma ; Humans ; Pelvic Bones ; Rupture ; Urinary Bladder

CT has facilitated early recognition and treatment of focal brain injuries in patients with head trauma. However. CT shows relatively low sensitivity in identifying nonhemorrhagic contusion and injuries of white matter. MR is known to be superior to CT in detection of which matter injuries, such as diffuse axonal injury. MR imaging in 14 cases of diffuse axonal injury on 2.0T was studied. The corpus callosum, especially the body portion, was the most commonly involved site. The lesions ranged from 5 to 20 mm in size with ovoid to elliptical shape. T2WI was the most sensitive pulse sequence in detecting lesions such as white matter degeneration, hemorrhagic and nonhemorrhagic contusion. The lesions were nonspecific as high and low signal intensities on T2WI and T1WI respectively. CT showed white matter abnormality in only 1 case of 14 cases. We propose MR imaging as the primary imaging procedure for the detection of diffuse axonal injury because of its multiplanar capabilities and higher sensitivity.
Brain Injuries ; Contusions ; Corpus Callosum ; Craniocerebral Trauma ; Diffuse Axonal Injury* ; Humans ; Magnetic Resonance Imaging* ; White Matter

Histocytic medullary reticulosis, known as malignant histiocytosis, is a disorder characterized by a systemicproliferation of morphologically abnormal histiocytes with prominent erythrophagocytosis. Fever, wasting, lymphdenopathy, hepatosplenomegaly and pancytopenia are the main clinical pictures. Prognosis is very poor andinvariably die within several months. Authors present radiological findings of pulmonary involvement in 5 cases of histologically proven histiocytic medullary reticulosis. The findings are progressive interstitial, alveolar ormixed infiltrations, small amount of pleural effusion, hilar and/or mediastineal lymph node enlargement and cardiomegaly. Histiocytic medullary reticulosis should be borne in mind in differential diagnosis of any patientswho has unexplanable above radiological findings.
Cardiomegaly ; Diagnosis, Differential ; Fever ; Histiocytes ; Histiocytic Sarcoma ; Lung ; Lymph Nodes ; Pancytopenia ; Pleural Effusion ; Prognosis

The authors made comparative studies of CT findings with upper GI series and surgical findings in 20 cases of histologically proven gastric cancers. The identification of thickening of gastric wall and local and remotemetastasis by CT was thought to be great value in treatment planning and prediction of prognosis of the patients. The results were as follows; 1. Of 20 cases, 19 cases demonstrated thickening of gastric wall. Among 3 cases suggested as early cancer on upper GI series, 2 cases demonstrated thickened gastric wall on CT and it was provedto be advanced cancer at surgery. 2. Out of 8 cases showed no definite metastasis on CT, 4 cases had malignant in filtration histologically in the regional lymph nodes. But they were less than 1.5 cm in diameter. 3. The frequency order of remote metastasis found by CT was pancreas, liver, left adrenal gland and lung in organs and retroperitoneal, regional nodes in lymph nodes.
Adrenal Glands ; Filtration ; Humans ; Liver ; Lung ; Lymph Nodes ; Neoplasm Metastasis ; Pancreas ; Prognosis ; Stomach Neoplasms

Calcification so of the basal ganglia are rarely found at routine autopsies and in skull radiographs. CT is superior to the plain skull radiographs in detecting intracranial attenuation differences and may be stated to bethe method of choice in the diagnosis of intracranial calcifications. Of 5985 brain CT scans performed in KyungHee Univeristy Hospital during past 3 years, 36 cases were found to have high attenuation lesions suggesting within basal ganglia. 1. The incidence of basal ganglia calcification on CT scan was about 0.6%. 2. Of these 36 cases, 34 cases were bilateral and the remainder was unilateral. 3. The plain skull films of 23 cases showed visible calcification of basal ganglia in 3 cases (13%). 4. No specific metabolic disease was noted in the cases.
Autopsy ; Basal Ganglia ; Brain ; Diagnosis ; Incidence ; Metabolic Diseases ; Methods ; Skull ; Tomography, X-Ray Computed

Although the ultrasonography is a useful imaging modality for evaluation of abdominal mass in an infant and child, CT has more advantages over te ultrasonography in assesssing anatomic detail, precise extent of tumor and differential diagnostic accuracy. The authors analyzed CT featurs of 85 cases of pathologically or clinicallyproven pediatric abdominal masses for recent 4.5 years at Keimyung University Dongsan Hospital. The reseults wereas follows: 1. The most common site was kidney (36 cases:42.4%), followed by nonrenal retroperitoneal masses(23cases:27.1%), hepatobiliary masses(15 cases:17.6%), gastrointestinal masses(9 cases: 10.6%), and genital massses(2cases: 2.3%) in order of frequency. 2. Hydronephrosis(17 cases:20%) and Wilms' tumor(17 cases:20%) were mostcommon and splenomegaly(8 cases:9.4%), neuroblastoma(5 cases: 5.9%), teratoma(4 cases:4.7%), rhabdomyosarcoma(4cases: 4.7%) were descending order of frequency. 3. The male to female ratio was 2;1, but female was predominantin teratoma, choledochal cyst and genital masses. Twenty three cases(27.1%) were under the age of one year. 4. Thediagnosis of hydronephrosis, assessment of its severity and localization of exact level of obstruction were easywith CT examination. 5. Characteristic CT features of Wilms' tumor were round or oval shaped, smooth marginated,large intrarenal mass with displaced or obstructed calyces, pseudocapsule and crescent sign; there were noevidence of retroperitoneal lymph node or contiguous extension, retrocrural lymph node enlargement, prevertebralmidline extension, or encasement of the aorta. 6. Typical CT findings of the neuroblastoma wre irregular shaped &marginated extrarenal mass with calcification frequently, accompained by retroperitoneal lymph node or contiguousextension, retrocrural lymph node enlargement, prevertebral midline extenstion and encasement of the aorta; therewere no evidence of pseudocapsule or crescent sign. 7. CT features of teratoma were characteristic, having atleast three or more of different tissue densities among fat, water, soft tissue and calcific densities. 8.Pathology and its extension of retroperitoneal space was demonstrated accurately by CT. 9. Mesenteric, omental andenteric cysts had similar CT appearance particularly very large cystic masses.
Aorta ; Child ; Choledochal Cyst ; Female ; Humans ; Hydronephrosis ; Infant ; Kidney ; Lymph Nodes ; Male ; Neuroblastoma ; Retroperitoneal Space ; Teratoma ; Ultrasonography ; Water ; Wilms Tumor

Congenital coronary artery fistula(CCAF) is communication of a coronary artery or its main branch with one ofthe atria or ventricles, the coronary sinus, the superior vena cave, or the pulmoanry artery. In Korean peoples,only 4 cases of the CCAF were reported as rare as worldwide and authors want to report another case of CCAF,confirmed by operation. 10-years-old girl shows a fistula between sinus node artery of the right coronary arteryand right atrium on root aortogram with left-to-right shunt and Qp/Qs=1.58, in which simple ligation of the originof the sinus node atery from right coronary artery was performed. All of the 5 Korean CCAF(4 were previouslyreported and 1 of authors) were originated from right coronary artery, and of which 4 weee opening into rightventricle and 1 of authors were into right atrium. Associated cardiac anomaly was noted in only 1 case as singlecoronary artery, Ages were from 9 months of age to 10 years old and no adult left case were found. 3 were femaleand 2 were male patients.
Adult ; Arteries ; Coronary Sinus ; Coronary Vessels ; Female ; Fistula ; Heart Atria ; Humans ; Ligation ; Male ; Sinoatrial Node

The pulmonary sequestration is rare congenital anomaly characterized by the presence of a part of lung tissuewhich is supplied by an aberrant systemic artery from the aorta or its branch and usually has no communicationwith the normal bronchial tree. The authors present 3 cases of intralobar pulmonary sequestration, studied by CTand /or US. Typical CT features of intralobar pulmonary sequestration are homogenous or unhomogeneous, relativelylow density lung mass near the diaphragm, having feeding artery from the aorta or branching vessels within themass during bolus injection or dynamic CT.
Aorta ; Arteries ; Bronchopulmonary Sequestration ; Diaphragm ; Lung ; Trees ; Ultrasonography