Background: Petroclival meningiomas (PCMs) are technically challenging lesions. Although the standard retrosigmoid approach is one of the most effective approaches, this route may have some limitations for the tumors extending into the supratentorial region and middle cranial fossa. We provide a modified surgical technique called retrosigmoid-transtentorial approach (RTTA) to solve these proble...

AIM This study aimed to investigate the operative procedure for neuroendoscope-assisted microscopic resection of petroclival meningioma to improve prognosis. MATERIAL AND METHODS Twelve patients with petroclival meningioma who had undergone neuroendoscope-assisted microscopic resection at the Department of Neurosurgery, First Affiliated Hospital of Xinjiang Medical University were selected. I...

Surgical exposure of the clivus, the ventral or lateral aspect of the brain stem, and all the intradural structures of the petroclival area remains difficult because of the presence of the petrous apex and peripetrous complex. However, a lateral skull base approach to the petroclival area is the most suitable approach if the lesion to be resected lies medial to the fifth nerve, in front of the ...

AIM The anatomic characters and applicability of the extended pterional transtemporal transtentorial (EPTT) approach versus the subtemporal transtentorial (ST) approach for surgical treatment of petroclival tumors were evaluated. MATERIAL AND METHODS Ten sides from five adult Chinese injected cadavers were manipulated using both two approaches. Four deep bony anatomic landmarks were specified...

OBJECTIVE Despite advancement of surgical techniques, the attachments petroclival meningiomas near central clival depression (CCD) remain difficult to visualize. With existing methods, amount tumor CCD that is inaccessible through various approaches cannot be compared. Tumors distort brainstem, changing size operative corridor for some but not all approaches; therefore, using cadavers with norm...

BACKGROUND Secondary immune thrombocytopenic purpura (ITP) associated with extranodal B-cell non-Hodgkin's lymphoma (NHL) is extremely rare. The optimal management is not established. We report a first case of ITP in association with extranodal B-cell NHL originating in the lower petroclival region, successfully managed by local tumor control using conventional radiotherapy. CASE DESCRIPTION ...

Endoscopic endonasal approach (EEA) is expected to be ideal for the paramedian ventral skull base meningiomas, allowing wide access to the ventral skull base regions and realizing early devascularization of the tumor without retraction of the brain. We searched clinical reports of EEA for skull base meningiomas, written in English language, published before October 2014, using the PubMed litera...