Efficacy of transurethral prostate enucleation by bipolar system for patients with benign prostatic hyperplasia.

BACKGROUND: The aim of this paper was to evaluate the efficacies and safety of transurethral prostate enucleation by bipolar system (TUEB) for the patients with benign prostatic hyperplasia (BPH). METHODS: We prospectively evaluated clinical outcomes of TUEB in 55 patients with BPH from July 2005 to January 2011. Mean ages of the patients were 69.2 years. International Prostate Symptom Score (IPSS), IPSS-quality of life (IPSS-QOL) were assessed before and 12 months after surgery. Serum PSA, maximal flow rate (MFR), and post-void residual (PVR) were also evaluated before and 6 and 12 months after surgery. RESULTS: The median prostate volumes and resection volumes were 64.1 g (interquartile range [IQR]: 48-87) and 34.4 g (25-60.2), respectively. The median operation time was 138.0 min (100.2-169.2). Total IPSS scores and IPSS-QOL were significantly improved (from 24 [17-31] to 5 [2-8] points, and from 6 [5-6] to 2 [1-2] points, both P<0.001). MFR and PVR were significantly improved 6 and 12 months after TUEB (from 6.2 [3.9-8.3] to 15.1 [10.5-20.9], and 14.6 [10.2-20.5] mL/s, P<0.0001, and from 151.5 [81.5-284.7] to 16.5 [0-30.5], and 6.0 [0-41.0] mL, P<0.0001, respectively). Serum PSA also significantly decreased, 6 and 12 months (from 7.5 [4.7-9.8] to 1.1 [0.5-1.5], and 0.6 [0.3-1.9] ng/mL, P<0.0001). Although hemoglobin decreased after operation, no case experienced blood transfusion. Three episodes of urinary tract infections, 14 cases of mild stress urinary incontinence, 2 cases of urinary retention were occurred transiently with recovery within 1 month after surgery. CONCLUSIONS: We identified favorable efficacy and safety of TUEB. TUEB appears to be another possibility in the treatment of BPH.

Effects of vertebroplasty for delayed-onset paraplegia caused by vertebral pseudarthrosis.

BACKGROUND: The effectiveness of percutaneous vertebroplasty for osteoporotic vertebral pseudarthrosis with delayed-onset paraplegia has not been reported. We performed vertebroplasty for such patients and tried to investigate the effectiveness of this surgery. METHODS: We studied 11 patients (2001-2007) treated with percutaneous vertebroplasty for osteoporotic vertebral pseudarthrosis with delayed-onset paraplegia. The mean age of the patients was 71.9 ± 5.2 years and the affected vertebrae were located in the thoracolumbar junction. The mean period between the onset of motor weakness and the day of the surgery was 9.5 ± 5.7 weeks. Vertebroplasty was performed by filling the intravertebral cleft with polymethylmethacrylate. The clinical course was estimated using the Denis pain scale, the Eastern Cooperative Oncology Group performance status scale and the modified Medical Research Council grade before the surgery, 0, 1, 3, 6 months and 1 year following the surgery, and at the latest follow-up visit. The instability angle and local kyphotic angle were evaluated with X-rays. RESULTS: Significant improvements were observed in the pain scale in all patients, as they did not experience severe pain, and the performance status following the surgery. These conditions continued until the final clinical examination. Most patients had motor weakness, with a preoperative manual motor test score of 0-3, which gradually improved to 4-5 over the examination period. The stabilities of the affected vertebrae were confirmed on imaging at the final examination. Kyphotic changes were initially realigned, but a correction loss occurred in 7 of the 11 patients as a result of adjacent vertebral fractures. Increase in kyphosis following the surgery did not affect the muscle strength recovery. Bridging callus formations were observed around the affected vertebrae within 6 months in all cases. CONCLUSION: Percutaneous vertebroplasty for vertebral pseudarthrosis with delayed-onset paraplegia is effective for recovering muscle strength, improving performance status and relief from pain, despite local kyphosis.

Electrochemical transfer of (18)F from (18)O water to aprotic polar solvent.

Electrochemical transfer of (18)F(-) from enriched [(18)O]-water to pure acetonitrile was investigated to develop a simple and effective synthesis of (18)F-radiopharmaceuticals. The transfer of (18)F is composed of two steps: first step is electro-deposition on a graphite anode and the next step is electro-emission into pure acetonitrile by inversing the polarity of the electric tension. A sufficiently high fraction of the electro-emission, 73%, was achieved. The electrochemical transfer of (18)F to aprotic polar solvents without any additives, such as phase transfer catalysis, will make the synthesis of diverse (18)F-radiopharamceuticals simple and easy.

Quadriparesis due to intraspinal cyst after failed posterior occipitocervical fusion in a patient with athetoid cerebral palsy.

STUDY DESIGN: A case report and review of the literature are presented. OBJECTIVES: To describe the clinical course and treatment of a patient with athetoid cerebral palsy who had quadriparesis due to an intraspinal cyst, following a failed occipitocervical fusion using sublaminar wires and rods. SUMMARY OF BACKGROUND DATA: Intraspinal cyst as a cause of quadriparesis in a patient with athetoid cerebral palsy is extremely rare. To our knowledge, there have been no publications on this issue. METHODS: A 60-year-old man with athetoid cerebral palsy and a history of posterior occipitocervical fusion presented with quadriparesis. Salvage surgery for cervical myelopathy and pseudarthrosis was performed with laminectomy and rearthrodesis using the pedicle screw system. An intraspinal cyst was identified as the main cause of the paraparesis. RESULTS: Solid bony fusion and the improvement of paraparesis were achieved 2 years and 1 month after the surgery. He is now able to feed himself and to walk with a cane, both without assistance. CONCLUSION: A physician managing patients with athetoid cerebral palsy should always be aware that an intraspinal cyst in the cervical spine may be the cause of cervical myelopathy.

Measurement of Cu K-shell and Ag L-shell ionization cross sections by low-energy positron impact.

Inner shell ionization cross sections by low-energy positron impact have been measured. Development of an x-ray detector with thin Si(Li) crystals has enabled the first measurements of the absolute cross sections for the positron impacts in the energy range below 30 keV. Threshold behavior of the measured cross sections for the Cu K shell and Ag L shell are compared with the theoretical results of Gryzinski and Kowalski [Phys. Lett. A 183, 196 (1993)]] and Khare and Wadehra [Can. J. Phys. 74, 376 (1996)]]. Good agreement has been found for the Cu K shell, while the experimental values for the Ag L shell were found to be smaller than the corresponding theoretical results.