https://www.selleckchem.com/products/exarafenib.html Background The anterior communicating artery complex may presente several anatomical variations, and many abnormalities have been reported in radiologiacal and cadaveric studies. Case Description The authors present a case of a 44-year-old Caucasian female, with a prior history of smoking and arterial systemic hypertension, admitted in the emergency department complaining of a sudden headache, nausea, and vomiting followed by tonic-clonic seizures. Computerized tomography (CT) and angiography (angio- CT) were carried out and showed Fisher Grade IV subarachnoid hemorrhage. Angio-CT revealed an anterior communicating artery (AComA) aneurysm. Minimally invasive craniotomy and microsurgical clipping were performed uneventfully. An unusual anatomical variation of the AComA complex characterized by duplication of the AComA associated with a triplication of anterior cerebral artery (ACA) was observed. The patient was discharged with no neurological deficits. Concluision This unique anatomical variation of the AComA-ACA complex constitute risck factors for development and rupture of aneurysms. Copyright © 2020 Surgical Neurology International.Background Ossifying fibroma (OF) is benign bone lesions, most frequent in young children, more common in the maxillary sinus and mandible (75-89%), the pathogenesis of the tumor is not clear, there are many subtypes of OF. This paper aims to report an OF a case and literature review. Case Description Male, 19 years old, with a progressive history proptosis since 2012, diagnosed as a right supraorbital lesion at an external service and assigned to conservative management. Then, he evolved with double vision, which worsened in February of 2018, associated with a moderate headache. On admission proptosis and downward deviation of the right orbit was noticed on the physical exam and with exception of limited right upgaze, external ocular movements were maintained. Head computed tomograp