The purpose of this study was to assess and compare the osseous responses to implanted particles of porous synthetic HA(Interpore 200(R), Interpore International, U.S.A.), resorbable natural bovine derived HA(Bio-oss(R), Gestlich Pharma, Switzerland) and calcium carbonate(Biocoral 450(R), Inoteb, France) in bone defects. Four calvarial defects of 2.5mm diameter were created in each of 16 Sprague-Dawley rats. The experimental materials were subsequently implanted in three defects, leaving the fourth defect for control purpose. Four animals were each sacrificed at 3 days, 1week, 2weeks and 4 weeks after surgery. The tissue response was evaluated under light microscope. Overall, histologic responses showed that all the particles were well tolerated and caused no aberrent tissue responses. There were difference in the amount of newly formed bone at the experimental sites and control site. There was more new bone formation associated with calcium carbonate site. In addition, the calcium carbonate site displayed multinucleated giant cells surrounding calcium carbonate particles after the 1st week, and osteoid tissue within the particle after the 2nd week. After 4 weeks, calcium carbonate particles were resorbed and replaced with new bone. The healing of the natural bovine derived HA site was similar to that of porous synthetic HA, except that new bone growth between the two particles have progressed more in the former site after the 2nd week. In the natural bovine derived HA site, the particle was surrounded by newly formed bone after the 4th week. After 4 weeks, the control site showed more mature bone than other sites. In conclusion, the grafted sites were better in new bone formation than non-grafted sites. In particular the calcium carbonate site showed the ability of osteoinduction and natural bovine derived HA showed osteoconduction in rat calvarial defects. This suggest that calcium carbonate and natural bovine derived HA could enhance the regenerative potential in periodontal defects.
Animals ; Bone Development ; Bone Regeneration ; Bone Substitutes* ; Calcium ; Calcium Carbonate ; Giant Cells ; Osteogenesis ; Rats* ; Rats, Sprague-Dawley ; Transplants

Acardic twining is a rare congenital anomaly, usually in monozygotic twins. This condition is characterized by the absence or rudimentary development of fetal hear, and associated with various anomaly(especially with anecephalus). The acardiac malformations are uniformly fatal in the affected twin, and mortality in the co-twin is as high as 55%. We recently experienced a case of acardius acephalus associated with a normal term male infant, so present with a brief review of the literature.
Humans ; Infant ; Male ; Mortality ; Twins* ; Twins, Monozygotic

No abstract available.

No abstract available.
Emergencies* ; Emergency Service, Hospital* ; Hospitals, General* ; Humans

Hepatoid adenocarcinoma of the stomach is a gastric carcinoma with both adenocarcinomatous and hepatocellular carcinomatous differentiation. It usually produces large amount of serum alpha-fetoprotein. It often occurs in aged person, commonly located in the gastric antrum. Because of early lymph node and liver metastasis, prognosis is poor. A case of hepatoid adenocarcinoma of the stomach in a 49-year-old man is reported. The patient's serum alpha-fetoprotein level was high(3380ng/ml). Liver function test was normal, otherwise. A mass was observed in right lobe of the liver on US and CT. It was hypervascular with increased uptake of lipiodol on hepatic arteriography. A large ulcerative tumor involving the gastric antrum and body was also found at barium study of the stomach. Subtotal gastrectomy and right Iobectomy of the liver resulted in rapid decrease in serum alpha-fetoprotein. Histopathologically the diagnosis was hepatoid adenocarcinoma of the stomach with liver metastasis.
Adenocarcinoma* ; alpha-Fetoproteins ; Angiography ; Barium ; Diagnosis ; Ethiodized Oil ; Gastrectomy ; Humans ; Liver ; Liver Function Tests ; Lymph Nodes ; Middle Aged ; Neoplasm Metastasis ; Prognosis ; Pyloric Antrum ; Stomach* ; Ulcer

Hepatoid adenocarcinoma of the stomach is a gastric carcinoma with both adenocarcinomatous and hepatocellular carcinomatous differentiation. It usually produces large amount of serum alpha-fetoprotein. It often occurs in aged person, commonly located in the gastric antrum. Because of early lymph node and liver metastasis, prognosis is poor. A case of hepatoid adenocarcinoma of the stomach in a 49-year-old man is reported. The patient's serum alpha-fetoprotein level was high(3380ng/ml). Liver function test was normal, otherwise. A mass was observed in right lobe of the liver on US and CT. It was hypervascular with increased uptake of lipiodol on hepatic arteriography. A large ulcerative tumor involving the gastric antrum and body was also found at barium study of the stomach. Subtotal gastrectomy and right Iobectomy of the liver resulted in rapid decrease in serum alpha-fetoprotein. Histopathologically the diagnosis was hepatoid adenocarcinoma of the stomach with liver metastasis.
Adenocarcinoma* ; alpha-Fetoproteins ; Angiography ; Barium ; Diagnosis ; Ethiodized Oil ; Gastrectomy ; Humans ; Liver ; Liver Function Tests ; Lymph Nodes ; Middle Aged ; Neoplasm Metastasis ; Prognosis ; Pyloric Antrum ; Stomach* ; Ulcer

No abstract available.
Hepatitis B Surface Antigens* ; Hospitals, General*

BACKGROUND: Anemia is a most common complication of chronic renal failure and erythropoietin has proven to be a effective treatment for anemia in dialysis patient. However, in patients with pre-dialysis chronic renal failure, Use of erythropoietin is usually limited because of its high cost and frequent administration. The purpose of this study was to evaluate the efficacy of low dose erythropoietin treatment in patient with pre-dialysis chronic renal failure. METHODS: We administered erythropoietin 2000U weekly to 25 patients with pre-dialysis chronic renal failure untill hemoglobin and hematocrit reached to 11g/dl, 33% respectively. After then we administered erythropoietin 1000U weekly as a maintenance dose. We measured the level of hemoglobin, hematocrit, reticulocyte count, serum creatinine, BUN, serum iron, ferritin, total iron binding capacity every two weeks for 12 months. RESULTS: 1) In 25 patients treated for 16 weeks, hemoglobin and hematocrit level increased from 8.2g/dl,24.2% to 8.8g/dl,28.2%(p< 0.05) respectively. After 28 weeks treatment, 23 patients(92%) reached target hemoglobin and hematocrit value(11g/dl,33%). 2) Serum iron level increased from 180.2ug/dl to 165.1ug/dl(p< 0.05) after 16 weeks treatment. But there were no significant changes in serum ferritin and total iron binding capacitiy. 3) There was no significant change in reciprocal serum creatinine value before and after erythropoietin treatment. 5) There was no significant side effect except mild exacerabation of hypertension(2 cases) during erythropoietin treatment. CONCLUSION: This result show that relatively low dose erythropoietin treatment in patient with pre-dialysis chronic renal failure can be used as a effective treatment for anemia despite of slow and gradual response.
Anemia ; Creatinine ; Dialysis ; Erythropoietin* ; Ferritins ; Hematocrit ; Humans* ; Iron ; Kidney Failure, Chronic* ; Reticulocyte Count

PURPOSE: The purpose of this study is to find some points that may help the differential diagnosis of ring lesions in magnetic resonance (MR) imaging of the liver through recognition of the characteristics of the morphology and the signal intensities of the ring lesions. MATERIALS AND METHODS: T1- and T2-weighted axial spin-echo images and gadolinium-enhanced Tl-weighted images were obtained with a 1.0 T superconducting MR imager. We reviewed the MR findings of 23 hepatic ring lesions which were confirmed as hepatocellular carcinomas (13), metastases (4), liver abscesses (4), hydatid cyst (1), and hematoma (1). RESULTS: There were 19 single rings and 4 double rings (all the cases were liver abscesses) on Tl-weighted images, and 8 single rings and 14 double rings on T2-weighted images. The signal intensity of the ring was low in hepatocellular carcinoma on Tl-weighted images and in hydatid cyst on T2-weighted images. It was high on Tl-weighted images in subacute hemaroma. Target lesion as an inner high-signal-intensity ring surrounded by a high-signal-intensity ring on T2-weighted images was seen in metatasis, liver abscess, and hepatocellular carcinoma. CONCLUSION: It is helpful to recognize the chracteristics of morphology and signal intensities of the ring lesions in the differential diagnosis of hepatic focal lesions.
Carcinoma, Hepatocellular ; Diagnosis, Differential ; Echinococcosis ; Hematoma ; Liver Abscess ; Liver* ; Magnetic Resonance Imaging* ; Neoplasm Metastasis

No abstract available.
Thymus Hyperplasia*