[Atypical cerebellar neurocytoma resembling a hemangioblastoma. A case report]. / Neurocitoma atípico de cerebelo que simula un hemangioblastoma. Presentación de un caso.

Through August 2013, 105 cases of intracranial extraventricular neurocytoma (EVN) had been described; 6% were located in cerebellum and 22% were atypical EVN. A rare morphologic form of neurocytoma, atypical EVN has had only 24 cases reported to date. Its prognosis is poorer than the typical central neurocytoma. This case report describes an atypical cerebellar EVN, a form that has not been reported yet, hence the interest of this article. We emphasise its cystic nature and mural nodule, in an infrequent presentation. EVN are low-incidence tumours that we need to take into consideration when making the differential diagnosis of cystic cerebellar lesions with mural nodule. Given that the prognosis of atypical EVNs depends on the atypical nature and on the grade of resection, medical follow up has to be more constant, due to the greater degree of recurrence.

[Multifocal clear cell meningioma in the sacral and lumbar spine. Case report and literature review]. / Meningioma de células claras lumbosacro multifocal. Presentación de un caso y revisión de la literatura.

Clear cell meningioma is a rare morphological form of meningioma. This case report describes a very rare case of multifocal clear cell meningioma in the sacral and lumbar spine. The patient was a 20-year-old female who presented back pain. Magnetic resonance imaging (MRI) revealed a large tumour at L4 to S2 level associated with two, smaller, satellite tumours at the lumbar level. An intra-extradural tumour was surgically removed and the pathological diagnosis of clear cell meningioma was confirmed. Both satellite lesions were also resected and their histopathological diagnosis was the same. Therefore, clear cell meningioma should be considered in young patients with suggested meningioma in the lumbar spine, as well as the possibility of multifocal origin and postoperative recurrence.

[Primary prophylaxis of early seizures after surgery of cerebral supratentorial tumors: Group for the Study of Functional-Sterotactic Neurosurgery of The Spain Society of Neurosurgery recommendations]. / Control de las crisis epilépticas durante el postoperatorio inmediato de los tumores cerebrales supratentoriales: recomendaciones del Grupo de Neurocirugía Funcional y Estereotáctica de la Sociedad Española de Neurocirugía.

Our review of the literature is basically focused on the primary prophylaxis of early seizures after surgery of cerebral supratentorial tumors, with the aim of suggesting several recommendations in medical antiepileptic treatment to avoid this kind of seizures which occur immediately after surgery. In conclusion, it is recommended to provide criteria for prophylaxis of early seizures after surgery of cerebral supratentorial tumors. It́s recommended a one week treatment with antiepileptic drugs in patients who didnt have seizures jet, starting immediately after the surgical treatment. If seizures appear during progress of the disease, a large period treatment will be needed. Preferred antiepileptic treatment is intravenous and with a low interactions profile. Levetiracetam, followed by valproic acid seem to be most appropriated drugs due to their properties and protective effects, particularly for our patients requirements. These recommendations are considered a general proposal to effective clinical management of early seizures after surgery, not taking into account the single circumstances of our patients. Always, clinical features of the patients could modify even significantly these guides in the benefit of each patient.