[Primitive aspergillosis of the posterior cerebral fossa in immunocompetent patient]. / Aspergillose primitive de la fosse cérébrale postérieure chez un patient immunocompétent.

Cerebral aspergillosis arises in the great majority of cases during an invasive aspergillosis with hematogene scattering from the lung hurts. The cerebral, not rare location is one of the worse criteria forecast during the invasive aspergillosis. We report the case of patient who was hospitalized in the neurosurgery department for syndrome of increased intracranial pressure, hemiparesis and cerebellar syndrome in febrile context. The radiological exploration objectified a collection of the posterior fossa. A stereotactic biopsy was performed. It collected fragments biopsy and pus. The pathological and microbiological analysis allowed the identification of Aspergillus fumigatus. The originality of this observation comes from the rare location in the posterior fossa of aspergillosis and because the patient is immunocompetent and no primary location is found. The patient presents however a viral hepatitis B of fortuitous discovery. He is put under treatment by amphotericin B. The evolution is marked by meningitis comment-diversion. Antibiotics are prescribed, and then the patient is operated for total ablation of the tumor. He dies following an osmolar coma associated with thrombopenia and a secondary renal insufficiency due to his treatment by the amphotericin B.

Intracranial meningioma in children: different from adult forms? A series of 21 cases.

OBJECTIVE: Intracranial meningiomas are very rare in children, comprising only 0.4 to 4.1% of pediatric tumors and only 1.5 to 1.8% to all intracranial meningiomas. The goal of this study of pediatric meningiomas was to establish their epidemiological profile as well as their clinical and radiological features, to assess the long-term outcome, and compare this result with adult meningioma. PATIENT AND METHODS: We conducted a retrospective study from June 1983 to June 2007; during this period 521 patients underwent surgery for primary meningioma at the Rabat Hospital, Department of Neurosurgery. Twenty-one patients were under 16 years of age (4%). The clinical charts and imaging data were reviewed. RESULTS: The mean age was 10.3 years (range: 2 to 16 years), with 13 boys and eight girls. In one patient a neurofibromatosis was associated. The mean delay to diagnosis was 4.6 months (range: 1 to 12 months). The most common clinical sign was raised intracranial pressure (90%). Of the meningiomas diagnosed, 47% were convexity meningiomas while 24% were parasagittal and 19% were skull-base meningiomas; in two cases (9.5%) the location was intraventricular. The mean tumor diameter was 6.6 cm (range: 3 to 10 cm). A large cystic component was found in 24% of the cases. Surgery achieved a Simpson grade I resection in 47%; 62% of the tumors were grade I and 24% were grade II based on World Health Organization pathological classification. The mean follow-up period was 33 months (range: 6 to 120 months). The recurrence rate was 33%. CONCLUSION: Pediatric meningiomas are larger than those found in the adult population; there is a male predominance with high incidence of a cystic component and high-grade meningiomas, thus explaining the increased recurrence rate despite the multimodal treatment.

[Orbital meningoencephalocele: two case studies]. / La méningo-encéphalocèle orbitaire. A propos de 2 cas.

Primitive orbital meningocele is a rare congenital malformation. It is defined as a herniation of meninges into the orbit through a congenital defect in the orbital bones. In meningoencephalocele, there is atrophic brain tissue in the herniated meningeal sac. We report the cases of two babies who presented with a medial orbital tumoral syndrome. Computed tomography showed a cystic tumor close to a bony defect in the anterior frontoethmoidal junction. A transcranial approach confirmed the diagnosis of meningoencephalocele; it was resected and the bony and dural defects were closed. The outcome was uneventful. Orbital meningoencephalocele is probably linked to an abnormal closure of the rostral neuropore. It generally presents in the first months of life with very suggestive radiological and clinical features. Surgical treatment using a transcranial approach is indicated in all cases and provides definitive recovery.

[Vertebral osteoblastoma and scoliosis. Two cases report]. / Ostéoblastome vertébral et scoliose. A propos de deux cas.

We report two cases of spinal osteoblastoma in two boys aged 16 and 19 years. The lesion was disclosed by scoliosis with signs of thoracic and lumbar neurological compression. The diagnosis was provided by the CT scan and magnetic resonance imaging and was confirmed by the histology study of the surgical specimen. Involvement of the vertebral column has been estimated to range from 30 to 40% for these rare tumors that account for less than 1% of all bone tumors. Localization on the convex aspect of scoliosis is rare. CT-scan provides an analysis of the tumor components and clearly demonstrates intraspinal extension. MRI is superior in visualizing neurological compression. In our experience, function outcome has been favorable after surgical decompression.

[Spinal epidural angiolipomas: a rare cause of spinal cord compression. A report of 8 cases and review of the literature]. / Les angiolipomes rachidiens épiduraux: une cause rare de compression médullaire. A propos d'une série de 8 cas avec revue de la littérature.

Extradural spinal angiolipomas are rare benign tumors containing vascular and mature adipose elements. We report 8 cases of spinal epidural angiolipomas in 6 females and 2 males. In 7 cases, the clinical manifestation was a progressive spinal cord compression and one case had a regressive paraparesis mimicking a multiple sclerosis. In the 8 cases, the localization was thoracic with an extradural complete type of contrast block in 2 cases and partial in 5 cases. The myelo-CT achieved in 7 cases and the magnetic resonance imaging done at our last case revealed a fat-containing epidural tumor. The tumors were removed in all cases through a laminectomy with a successful outcome after an average of 9 years (range: 6 months-12 years). Sixty-seven similar cases in the international literature are reviewed. A total of 75 cases have been studied: 45 women and 30 men with a mean age of 46.3 years (range: 6-73), presenting a progressive spinal cord compression in 68 cases and in 7 cases a regressive paraparesis mimicking a multiple sclerosis. Myelography shows an extradural compression of the thecal sac. MRI is nowadays the imaging modality of choice for the diagnosis of these lesions. The surgical removal often easy of the epidural spinal angiolipomas permit a fast recovery. The etiopathogenesis of this process is still controversial between the dysembryogenetic and malformative hypothesis.