Brain tumors are the most common disease group of solid tumors in childhood, and children with brain tumors have a relatively poor survival rate. Epidemiologic data from a hospital-based registry provide the necessary information to obtain a full picture of the frequency of this disease, which is a great challenge in pediatric oncology. One hundred thirty four tumors in children between 0 and 17 years of age diagnosed between 2013 to 2017 were classified according the sex, and topography. Incidence of brain tumor in boys were higher than girls. From the registry data, the prevalence for boys was higher (67%). In the whole series, 54% were supratentorial, 46% infratentorial. The most common histopathologic pattern seen in the registry were pilocytic astrocytoma which accounts for 42 cases (31%) followed by medulloblastoma and craniopharygioma with the percentage of 25% and 18% respectively. The least histopathologic pattern of pediatric tumor seen in our center are diffuse astrocytoma and choroid plexus papiloma which was only seen in 1 patient for the last 5 years of our experience.

Introduction : Intracranial ateriovenous malformation (AVM) is a non-neoplastic congenital vascular abnormality which appears as a mass lesion composed of tangled blood vessels connecting arteries and veins in the brain. Case Report : Twenty seven years old male was present in our emergency department (ED) with decreased of conciousness and reccurent generalized seizure. The physical examination reveal the patient Glasgow coma scale (GCS) of 12 points (E4M5V3). Head CT scan with contrast shows contrast enhancing lesion on the frontoparietal region with extension to right lateral ventricle which suggest vascular lesion. We performed surgical resection of the AVM using the temporary clip on M2 branch which supply the nidus to reduce the risk of bleeding on operation. Discussion : Patients with grade I or II AVM tolerate resection with acceptable morbidity, whereas those with a grade IV or V AVM may be considered for conservative management because of the high anticipated risk of surgical morbidity Conclusion : AVMs are abnormalities of the intracranial vessels that constitute a connection between the arterial and venous systems and lack an intervening capillary bed. Microsurgical excision of the AVM involves a craniotomy, careful dural opening with circumferential nidus dissection until complete AVM resection is achieved.