RESUMO
Primary Ewing's Sarcoma [ES] is a small round tumor, more likely to present in long bones and rarely in skull bones. ES commonly present in the second decade of life, and it is usually treated by multi?modality including surgery, chemotherapy, and radiotherapy. In this case, a 13 years old boy presented with left facial palsy and hearing loss for two weeks, treated with steroid but no improvement. MRI was done and showed left jugular foramen and cerebellopontine mass measuring 4.8[asterisk]4.4[asterisk] 3 cm. Debulking surgery of the tumor was done with multiple biopsies reported by histopathology as malignant small round cell tumor consistent with Ewing sarcoma
RESUMO
Evaluation of posterior lumbar interbody fusion with titanium cages, BAK system [Bagby - Kuslich, Spine Tech, Inc. Minneapolis, MN] for low grade spondylolisthesis [Grade I, II]. Interbody cages have been developed to replace tricortical interbody grafts in posterior lumbar interbody fusion [PLIF] procedures. The cages provide immediate postoperative stability and facilitate bony union with cancellous bone packed in the cage itself. Superior fusion rates and clinical outcomes have been obtained by using titanium cages. The authors evaulated 26 consecutive patients of whom surgery was performed in the Alexandria University Hospital. The neuroradiologic work-up consisted of plain x-ray lumbosacral spine, computerised tomography lumbosacral spine, and magnetic resonance imaging lumbosacral spine. Surgery was performed at the L4-5 level in 18 cases and at the L5-S1 level in 8 cases. The median follow-up was 15 months. Transpedicular screws and rods were added in 14 patients to enhance stabilisation. Satisfactory fusion was obtained at all levels during the one-year follow-up, with a fusion rate was 92.5%. Overall, 77% of the patients were satisfied with their clinical outcome. The function of interbody fusion cages is to stabilise the spina! segment primarily by distracting them as well as by allowing bone ingrowth and fusion. The procedure is safe and effective with a 92.5% fusion rate and a 77% overall patient satisfaction rate