Low-grade fibromyxoid sarcoma (LGFMS) is a soft tissue tumor of mesenchymal origin. Sarcomas are a heterogeneous group, representing 1% of all neoplasm diagnoses. Primary sarcomas of the central nervous system (CNS) are rare, and represent only 0.7% of all sarcomas, with an estimated incidence of 3 per 10 million people per year. The case of a 59-year-old woman who developed a low-grade intracranial fibromyxoid sarcoma in the right parietal region, is described. The clinical course, imaging studies, histopathological features, and treatment approach of this unusual diagnosis, are discussed. Low-grade intracranial fibromyxoid sarcoma is a rare and probably under- reported condition. The definitive diagnosis is usually made through histo-pathological studies.

Discogenic low back pain is a condition whose typical initial medical management is that of physical therapy. A significant percentage of patients experience a reduction of their discomfort, but for those with persistent symptoms, surgery is recommended. Traditionally, open surgery or microdiscectomy has been the preferred choice for the treatment of herniated discs. Nevertheless, endoscopic discectomy is a technique with several advantages; in this review of third-generation endoscopic discectomy, its indications, a brief history of international and national spinal endoscopy, the technique and its application in our context are described, and a case handled in our institution is presented.

Introducción: Los aneurismas intracraneales representan el 85% de casos de hemorragias subaracnoideas, dentro de las cuales las no traumáticas tienen una alta tasa de mortalidad (40-60%). En el manejo endovascular y microquirúrgico de esta enfermedad, el debate ha sido siempre intenso respecto a si el tratamiento temprano produce un beneficioso resultado funcional y reduce la morbi-mortalidad del paciente. Caso Clínico: Paciente mujer de 54 años, admitida con cefalea súbita y cuadro neurológico que cursó con rápido deterioro. La tomografía mostró hemorragia subaracnoidea por ruptura aneurísmica del complejo comunicante anterior; fue sometida a  microcirugía dentro de las primeras 24 horas y transferida luego a UCI, sin complicaciones. Discusión: El tiempo de resolución, sea mediante clipaje microquirúrgico o tratamiento endovascular...