[Reintervention in gliomas: the necessity of nuclear magnetic resonance]. / Reintervención en gliomas: necesidad de la resonancia nuclear magnética.

The reoperation of patients with recurrence of cerebral glioma is a technique offering survival with a good quality of life. The accepted criteria are a Karnofski index until reoperation greater than or equal to 70, young age, and a favourable histologic grade of tumor. NMR offers better sensitivity than other neuroimaging techniques for the detection of tumoral extension, local and at a distance, and allows a good tumoral resection. We report a patient with recurrence of a cerebral astrocytoma grade II with the criteria for reoperation, but when we performed NMR a dissemination of the tumor to the posterior fossa was seen, and reoperation was consequently counter-indicated. We discuss the mechanism of the extension of cerebral gliomas, the value of neuroimaging techniques and the role of reoperation in this context. We consider it necessary to perform NMR prior to reoperation in this special group of patients with a cerebral glioma recurrence.