Background:Medulloblastoma is a highly malignant embryonal tumor which commonly arises in the cerebellum. It is relatively rare and accounts for less than 2% of all primary brain tumors. The tumor primarily occurs in childhood; however, rarely, it may be found in adult population. In addition, medulloblastoma in adult population shows features which are quite distinct from the pediatric group.Case Description:We report the case of a 33-year-old man who presented to our institution with a history of blurred vision of both eyes for 5 months preceded by intermittent headache since the previous year. Preoperative investigation suggested a posterior fossa mass and we suspected an ependymoma. The patient underwent ventriculoperitoneal shunt and craniotomy tumor removal, followed by radiotherapy. Histopathological and immunohistochemical examination were performed, and the results showed a diagnosis of medulloblastoma.Conclusion:This case is exceptional because adult medulloblastoma occurrence in our center is extremely rare, and the diagnosis can only be established through histopathological and immunohistochemical studies.

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Background: Medial sphenoid wing meningiomas involved to the anterior clinoid process (APC) and located medial on the lesser and greater wing of the sphenoid. Surgical planning of medial sphenoid wing meningiomas must be carefully considered, which in skull base surgery has emphasized the essential of venous preserving and the morbidity when accidentally sacrificed. Objective: This study aimed to understand the characteristic venous drainage pattern of medial sphenoid wing meningiomas and correlate with surgical planning Methods: A retrospective analysis evaluation was performed on 7 patients with medial sphenoid wing meningiomas using digital subtraction angiography (DSA) to determine the venous drainage system characteristics before surgery. Classification of the venous drainage pattern from sylvian veins was divided into cortical type, sphenobasal type and cavernous type. Clinical information and postoperative complication were retrospectively reviewed using the patient's medical and surgical records. Results: Based on the 7 surgical cases, 5 cases found as cortical type, sphenobasal type was found in 2 cases and did not find the cavernous type. The average tumor volume of cortical and sphenobasal type was 47,7 cm 3 , 36 cm 3 respectively. In this study, one surgical complication was identified, frontal intracerebral hemorrhage (ICH) from postoperative computed tomography (CT) scan evaluation in patients who diagnosed with sphenobasal type. Conclusion: Complication because venous damage in cases ofMedial sphenoid wing meningiomas was rare. However, surgical strategies that aimed to avoid venous complications influenced by venous preservation and a good understanding of venous characteristics.