Leg ; Osteogenesis, Distraction

PURPOSE: Central lucency of pelvic phleboliths is frequently observed on plain pelvic radiographs. When it is also present on noncontrast helical CT images, pelvic phleboliths may be easily diagnosed, with no suspicion of distal ureteral calculi. The objective of this study was to determine the frequency with which this phenome-non is seen on plain radiographs and noncontrast helical CT images. MATERIALS AND METHODS: During a recent two-year period we identified 70 patients with renal colic who under-went both abdomino-pelvic radiography and noncontrast helical CT scanning. Radiographs were obtained at 70 -85 kVp and 30 -40 mA; CT scans were preformed within one month of plain radiography with parameters of 120 kVp, 200 -220 mA, 5-mm collimation, and pitch of 1 -1.6, and using soft tissue and bone window settings. With regared to the central lucency of pelvic phleboliths, as seen on both on radiographs and CT im-ages, two experienced radiologists reached a consensus. RESULTS: Among the 70 patients, a total of 150 pelvic phleboliths was found. In all cases except one, pelvic radi-ography and noncontrast helical CT revealed the same number of phleboliths. The exception was a case in which one of two phleboliths demonstrated by CT was not seen on radiographs. Pelvic radiography revealed central lucency in 95 of these 150 phleboliths (63%), but noncontrast helical CT failed to depict a hypodense center in any phlebolith. CONCLUSION: Central lucency of pelvic phleboliths, as frequently seen on plain pelvic radiographs, was not revealed by routine noncontrast helical CT in any patient.The presence or absence of central lucency on these CT images cannot, therefore, be used to differentiate phleboliths from distal ureteral calculi.
Consensus ; Humans ; Radiography ; Renal Colic ; Tomography, Spiral Computed* ; Tomography, X-Ray Computed ; Ureteral Calculi

No abstract available.
Animals ; Liver* ; Rats* ; Selenium*

The authors report a case of recurrent subarachnoid hemorrhage (SAH) after complete occlusion of an intracranial aneurysm. It is known that regrowth of an aneurysm after the complete clipping is a rare event. For detection of recurrence, however, it may be necessary to follow up with the patient regularly after the initial operation for intracranial aneurysms, because re-rupture of an aneurysm can cause a fatal result, and the cumulative risk of a recurrent SAH is thought to be not low over time.
Aneurysm ; Follow-Up Studies ; Humans ; Intracranial Aneurysm ; Recurrence ; Subarachnoid Hemorrhage

Salmonella infection can cause an asymptomatic intestinal carrier state or clinical diseases such as enterocolitis presenting abdominal pain, fever, vomiting, or diarrhea. Salmonella usually invades Peyer's patch of terminal ileum or ascending colon. Sepsis is not common and acute renal failure secondary to rhabdomyolysis is rare. The causes of rhabdomyolysis are trauma, excessive exercise, alcohol, seizure, metabolic abnormality, and infection. Infections account for less than 5% of the reported causes of rhabdomyolysis and resulting acute renal failure. The mechanisms underlying rhabdomyolysis due to infection are direct muscle invasion, toxin production, and nonspecific effects that can occur with infections such as fever, dehydration, acidosis, and electrolyte imbalance. We report a case of sepsis and acute renal failure secondary to rhabdomyolysis associated with Salmonella infection.
Colonoscopy ; Enterocolitis/complications/*diagnosis ; Humans ; Kidney Failure, Acute/*diagnosis/etiology ; Male ; Middle Aged ; Rhabdomyolysis/diagnosis/etiology/microbiology ; Salmonella Infections/complications/*diagnosis ; Sepsis/*diagnosis/etiology ; Tomography, X-Ray Computed

The purpose of this study was to compare shear bonding strengths and debonding patterns of the ceramic brackets attached on the crystal which were grown on the enamel surface of a tooth with different concentrations of lithium sulphate-contained polyacrylic acid in different application times. Four kinds of concentrations of mixed solutions were made and applied to the enamel surface on extracted human premolars. The solutions were made by adding 0.3M or 0.6M of lithium sulfate to 50% or 65% of polyacrylic acid with 0.3M sulfuric acid. The solutions were applied for 30 or 60 seconds. After bonding, a universal testing machine was used to measure the shear bond strength, and then observations were made of debonding patterns through the stereoscope. And the enamel surface was observed through the scanning electron microscope to examine the pattern of crystal growth and debonding. The results were as follows: 1, Shear bond strength in the enamel surface treated with 50% polyacrylic acid was higher than that with 65% polyacrylic acid. 2. There were no statistical differences in shear bond strength according to concentration of lithium sulfate and application time of solutions. 3. Enamel surface was almost free of resin debris after debonding. 4. Enamel surface treated with 50% polyacrylic acid showed higher density of crystal growth than that with 65% polyacrylic acid under scanning electron microscope.
Bicuspid ; Ceramics ; Crystallization* ; Dental Enamel ; Humans ; Lithium* ; Sulfur ; Tooth

Reconstructive surgeries for old ligament injuries of the knee vary according to the site and nature of injury as well as the age, health, physical demand and cartilage condition of the patients. No single best procedure is present for any old ligament injuries, but the most adaptable technique should be applied according to accurate diagnosis and experiences of surgeon. We reviewed our experiences of several reconstructive surgeries for the 38 cases with chronic ligamentous instabilities and summarized as following. 1) The most prevalent age of the patients was the third decades and males were 5.3 times more common than females. 2) Traffic accidents was the most common cause. 3) Tear of anterior cruciate ligament and medial collateral ligament appeared to be the most common injury. 4) Results at final follow up was not seemed to be affected by severity or location of ligament injury. 5) Intraarticular reconstruction without combined extraarticular reconstruction was not considered to be effective enough for anterior cruciate ligament deficient knee. 6) Although the number of cases was not large enough, we reviewed various reconstructive surgical techniques for comparison and evaluated the effects.
Accidents, Traffic ; Anterior Cruciate Ligament ; Cartilage ; Collateral Ligaments ; Diagnosis ; Female ; Follow-Up Studies ; Humans ; Knee ; Ligaments ; Male ; Tears

The purpose of this study was to investigate osteonectin expression patterns in cleft palatecompare to normal palate rats. We used 4 pregnant rats, and beta-aminoproprionitrile was oral dose to rat according to lg/kg body weight at gestation days 13 to induce cleft palate. Total 6 fetus was got with cleft formed, then 3 fetus was used for immunohistostain and 3 fetus was used for western blot analysis. Expression patterns of osteonectin in mesenchymal cells of cleft palate was more dilute to mesenchymal cells of normal palate with immnunohistostain, and width and length of band of maxilla in cleft palate was more thin than maxilla of normal palate with western blot study.
Animals ; Blotting, Western ; Body Weight ; Cleft Palate* ; Fetus ; Maxilla ; Osteonectin* ; Palate ; Pregnancy ; Rats*

Cleft palate has been studied with epidemiologic and molecular methods, and many etiologic factors have been examined closely. Among the research methods, biologic molecule research has been the most important method for cleft palate formation study. The TGF-beta played an important role in cell migration, epithelial-mesenchymal transdifferentiation, extracellular matrix synthesis and deposition. But there was not much research on the correlation cleft palate induced by beta-aminonitroproprionitrile(BAPN) and TGF-beta expression. The purpose of the present study was to examine how TGF-beta is expressed in cleft palate rats. 4 Timed-pregnant Sprague-Dawley rats were obtained on the 10th gestation day. On the 13th day of gestation, BAPN-monofumarate salts ((C3H6N2)2.C4H4O4) were individually, orally administered to 3 pregnant rats at a ratio of 1g/kg body weight. And 4 pregnant rats were sacrificed on day 20 post coitus (p.c.). The TGF-beta expression in the cleft formed rats fetuses showed the following patterns : 1. Osteoblast and mesenchymal cells of the cleft palate rats were of low expression compared with those of the control rats. 2. The cleft palate rats didn't show any difference in the TGF-beta expression of osteocyte from the control rats. 3. In western blot analysis, the thickness of band of TGF-beta in the cleft palate rats was thinner and more diluted than that of the control rats.
Aminopropionitrile* ; Animals ; Blotting, Western ; Body Weight ; Cell Movement ; Cleft Palate* ; Coitus ; Extracellular Matrix ; Fetus ; Osteoblasts ; Osteocytes ; Pregnancy ; Rats* ; Rats, Sprague-Dawley ; Salts ; Transforming Growth Factor beta*

Tooth movement facilitated by corticotomy and distraction osteogenesis, new paradigm in orthodontics, was discussed. Intrusive tooth movement of anterior or posterior teeth was thought to be difficult or impossible. In this study, a part of cortical bone, which was a sort of resistance to tooth movement in alveolar bone, was removed. On the other hand, active bone deposition was made possible in the tension side. That was the main concept of tooth movement facilitated by corticotomy and distraction osteogenesis. Teeth moved at such a speedy rate as we could not imagine in conventional tooth movement, which lead to the reduction of total treatment period. And intrusive movement was possible without a side effect, for example, root resorption or the periodontal breakdown. Those were the superior aspects to the conventional orthodontics.
Hand ; Orthodontics ; Osteogenesis, Distraction ; Root Resorption ; Tooth Movement* ; Tooth*