For many years the only mechanism for observing gross pathologic features of CNS neoplasms was to examine brains extracted after death. However, advancements in imaging technology now allow providers to observe typical gross neuropathological findings in the brains of living patients. Some brain tumors have characteristic MRI findings, an example of which is a cyst... Continue Reading →
Myxopapillary ependymoma arises in the lumbar region of the spinal cord and typically produces symptoms associated with impingement of the spinal nerve roots of the cauda equina. It usually appears as an oval or sausage-shaped contrast-enhancing mass, like the one pictured in this MRI image (sagittal post-contrast T1 Fat-sat). The myxopapillary ependymoma in the inset photograph represents a gross surgical... Continue Reading →
Giant Cell Glioblastoma, also called magnocellular or monstrocellular glioblastoma, is characterized by atypical cells that are extremely large, especially when compared to the non-neoplastic inflammatory cells seen on the left side of the image. The tumor has increased number of dividing cells, including typical mitotic figures (bottom left arrow) and atypical or granular mitoses (bottom... Continue Reading →
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A review of the histopathologic diagnosis of the most common primary malignant brain tumor: glioblastoma. https://www.youtube.com/watch?v=3KD6wnMR6Lg&t=74s
This middle aged patient had a heterogeneous lesion with multiple irregular rings of enhancement following contrast administration. Biopsy revealed glioblastoma with microvascular proliferation and necrosis, both of which contain leaky blood vessels that contribute to contrast enhancement on imaging.
This elderly patient complaining of headache was diagnosed with glioblastoma following biopsy of the heterogeneous, ring-enhancing lesion in the right temporal lobe. Mass effect caused by the space-occupying tumor has pushed the ipsilateral cingulate gyrus under the falx cerebri, resulting in a subfalcine herniation.