Radicular compression by extradural spinal endometriosis. Case report.

The case of a 35 years old woman affected by endometriosis located inside the spinal canal in the extradural space at the level of the third left lumbar root, and developing through the corresponding foramen into the paraspinal muscles, is presented. The clinical aspect, radiological picture and surgical treatment are described. Pathogenesis is discussed on the basis of the literature. Furthermore it is stressed that only the histopathological examination gave the correct diagnosis and permitted the definitive hormonal treatment. To our best knowledge no comparable case has been published in the literature

Géodynamique andine : résumé étendus = Andean geodynamics : extended abstracts

L'importante formation miocène Farellones, de l'arc volcanique NS du Chili central, se divise en un membre inférieur, rhyolitique et ignimbritique, et un membre supérieur, andésitique et lavique, associés à un linéament EW de necks basaltiques. Les caractéristiques géochimiques indiquent une identité de source entre l'arc andésitique NS et le linéament basaltique EW et une différence totale de ces volcanismes avec les ignimbrites. (Résumé d'auteur

Approximate Multicommodity Flow for WDM Networks Design

The design of WDM optical networks is an issue for telecom operators since the spreading of this technology will not occur unless enough performance guarantees are provided. Motivated by the quest for efficient algorithms for the Routing and Wavelength Assignment problem (RWA), we address approximations of the fractional multicommodity flow problem which is the central part of a complex randomized rounding algorithm for the integral problem. Through the use of dynamic shortest path computations and other combinatorial approaches, we improve on the best known algorithm. We also provide directions for further improvements