brown tumors may occur secondary to hyperparathyroidism in patients with chronic renal failure (ckd). they are increasingly rare because hyperparathyroidism in now diagnosed and treated at an early stage. we report 67-year-old man who had been on hemodialysis for crf for over 3 years, who presented with back pain over the thoracolumbar junction from 2 years ago and because of pain he could not ...

treatment with intensification of chemotherapy using alkylating agents and topoisomerase ii inhibitors and radiotherapy has improved the outcome of patients with solid tumors such as ewing’s sarcoma. however, there are several reports of secondary malignancy following treatment of these tumors. in this article, we describe a 12 years old girl with all who had ewing’s sarcoma when she was 8 year...

NURSES ARE being urged to back a campaign to make first aid compulsory in all state-funded secondary schools.

Synovial cysts of the lumbar spine are an uncommon cause of back and radicular pain. These cysts most frequently present as back pain, followed by chronic progressive radiculopathy or gradual onset of symptoms secondary to spinal canal compromise. Although less common, they can also present with acute spinal cord or root compression symptoms. We report of a case in which hemorrhaging into a rig...

Magalhaes et al reported on randomized controlled trials of ozone therapy as a treatment for low back pain secondary to herniated intervertebral discs (HID) (1). We have read their article with interest and want to add important concerns. Ozone therapy has become an alternative treatment for low back pain secondary to a herniated disc. Although the exact mechanism of action of medical ozone is ...

The fly back converter has been widely used for multi outputs due to the simple structure and low cost in low-power applications. This paper presents a new multi output converter. It consists of a half-bridge inverter with boost converter in primary side and a fly back rectifier that is integrated with an auxiliary buck converter in secondary side. The boost converter is used to generate high v...

The back-propagation neural network algorithm is a commonly used method for predicting the secondary structure of proteins. Whilst popular, this method can be slow to learn and here we compare it with an alternative: the cascade-correlation architecture. Using a constructive algorithm, cascade-correlation achieves predictive accuracies comparable to those obtained by back-propagation, in shorte...