Brain Stem Gliomas overview
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Brainstem gliomas are tumors that occur in the region of the brain referred to as the brain stem, which is the area between the aqueduct of Sylvius and the fourth ventricle.
Historical prospective
In the era preceding modern imaging, all brainstem gliomas were regarded as a solitary pathological entity with poor prognosis. In the late 1960s, Matson suggested that all brainstem tumors were malignant and were deemed inoperable regardless of their histopathological characteristics or location.This assertion was questioned shortly thereafter by Pool, who was one of the first to report tumor resection in the brainstem, which in the case described was inside the aqueduct. In 1980, Hoffman et. described the dorsally exophytic group of brainstem gliomas as a distinct subgroup, and reported that these lesions were surgically curable with aggressive resection. Over the past 3 decades, the treatment of brainstem gliomas has notably progressed as a result of the gradual advancements in microsurgical techniques, sophisticated imaging technology and, most importantly, the availability of MRI. These modalities have revealed that brainstem gliomas are a heterogeneous group of tumors.