No abstract available.
Contraception*

No abstract available.
Travel Medicine

No abstract available.
Diagnosis* ; Hepatitis B, Chronic* ; Hepatitis, Chronic*

No abstract available.
Diagnosis* ; Hepatitis B, Chronic* ; Hepatitis, Chronic*

PURPOSE: To evaluate the incidence,. degree, and clinical significance of non-obstructive intrahepatic bile duct di'latation encountered on follow up CT after gastrectomy for gastric carcinoma. MATERIALS AND METHODS: We retrospectively analyzed follow-up abdominal CT of 65 patients who had undergone gastrectomy with truncal vagotomy and subtotal gastrectomy for gastric carcinoma. We classified those patients who showed intrahepatic duct dilatation into non-obstructive or obstructive groups depending on the presence or absence of the lesions obstructing the duct. We also evaluated the incidence, degree and pattern, and appearance time of non-obstructive type of duct dilatation. RESULTS: Non-obstructive and obstructive biliary dilatations were present in 8 cases(12.3%) and 9 cases(13. 8%), respectively. The degree of non-obstructive group was mild in 6 cases(75%) and moderate in 2 cases (25%) who had taken cholecystectomy during the follow up period, and patterns were proportional dilatation of the central and peripheral intrahepatic ducts. It appeared on follow up CT obtained 6 to 12 months after operation in 7 cases and 3.5 months in one case. No statistical significance was noted between the type of surgery and the incidence of non-obstructive dilatation(p>0.05). CONCLUSION: Mild dilatation of the central intrahepatic ducts without evidence of mechanical biliary obstruction can be seen on follow-up CT obtained more than 6 months after gastrectomy for gastric carcinoma, and the incidence is about 12%. We think that this finding is non-obstructive and clinical evaluation is unnecessary.
Bile Ducts, Intrahepatic ; Cholecystectomy ; Dilatation* ; Follow-Up Studies ; Gastrectomy* ; Humans ; Incidence ; Retrospective Studies ; Tomography, X-Ray Computed ; Vagotomy, Truncal

STUDY DESIGN: A retrospective analysis was performed on 40 patients who had had previous lux bar spine surgeries. OBJECTIVE: To determine what factors most influenced surgical outcome and to analyze results in a series of revision lumbar surgeries. SUMMARY OF BACKGROUND DATA: Satisfactory surgical outcome of the revision lumbar surgery range from 28% to 82% and are rarely comparable to primary surgery. Many factors predicting outcome from repeat lumbar surgery haute been listed. METHODS: Forty patients were analyzed who had had previous lumbar surgeries. The patients were classified into 5 groups according to diagnosis: 3 Infection,5 instability,8 nonunion, 14 HNP and 10 spinal stenosis. of 40 patients,33 patients(82.5%) underwent fusion with instrumentation for repeat surgery. Their clinical course was followed for a minimum of 1 year. The number of surgery on each mpatient was 1.3 times on an average. RESULTS: Overall, 80% of patients had a satisfactory result. Obviously extruded or sequestrated HNP in MRI findings, complete block of contrast with severe radiculopathy and/or myelopathy in spinal stenosis, complete decompression, neurolysi s and fusion with instrumentation, and longer than 6 month pain relief after precious surgery were correlated with satisfactory outcome. However, the number of precious operation, age, repair of pseudarthrosis , no abnormality at surgery and combined multiple degenerative joint disease were significantly correlated with poor surgical outcome. The most common complication during repeat surgery was dural tear in 5 cases(12.5%). CONCLUSIONS: Success rate of revision surgery was low as compared to primary operation. Therefore, erroneous diagnosis and faulty surgical technique understandably lead to failure, and precise attention to preoperative and intraoperative detail can minimize these sources of error.
Decompression ; Diagnosis ; Humans ; Joint Diseases ; Magnetic Resonance Imaging ; Pseudarthrosis ; Radiculopathy ; Reoperation ; Retrospective Studies ; Spinal Cord Diseases ; Spinal Stenosis ; Spine* ; Tears

No abstract available.
Cell Count* ; HIV* ; Humans

STATEMENT OF PROBLEM: Stress concentration on the neck bone affects the bone resorption, and finally the implant survival. PURPOSE: In order to examine the stress distribution on the neck bone and prosthesis abutment for implants, decreasing abutment sizes were used. MATERIAL AND METHODS: Axisymmetric models were used to obtain the data required. These models were composed of 4mm implants with 3.4mm and 4mm abutments, 5mm implants with 3.4mm and 5mm abutments and 6mm implants with 3.4mm and 6mm abutments. All abutments were designed to received a 10mm high by 10mm diameter gold crown. Functional element analysis was used to obtain these results using data that consisted of 50 N vertical and 45 degree inclination forces. RESULTS: 1. Changing the diameter of the abutment on the implant affects the effect of the inclination forces more than the effect of the vertical forces. 2. Changing the diameter of the abutment on the implant affects the effect of the inclination forces more than the effect of the vertical forces. 3. Experimentation showed that the larger diameter implants provided a decreased neck bone stress, whereas a larger diameter abutment provided a decrease marginal abutment stress. 4. Experimentation showed that the neck bone and abutment received more stress from inclination forces than vertical forces. CONCLUSIONS: By decreasing the size of the abutment on the implant we were able to diminish neck bone stress.
Bone Resorption ; Crowns ; Neck ; Prostheses and Implants

No abstract available.

No abstract available.
Heart Valves* ; Heart* ; Return to Work*