Critical Care Registered Nurse (CCRN) Practice Exam

What is the typical characterization of a glioblastoma multiforme?

1. Low-grade tumor found in children

2. High-grade, butterfly pattern in neuroaxis

3. Non-invasive tumor of the meninges

4. Always accompanied by obstructive hydrocephalus

The correct answer is: High-grade, butterfly pattern in neuroaxis

A glioblastoma multiforme is classified as a high-grade tumor, specifically designated as a grade IV glioma. It characteristically exhibits a "butterfly" pattern, often crossing the midline of the brain, particularly in the cerebral hemispheres. This invasive nature allows for the tumor to disrupt normal brain architecture, leading to significant neurological deficits. The other options do not accurately represent glioblastoma multiforme. While it is true that there are low-grade tumors found in children, glioblastomas are not among them, as they are more common in adults. Although glioblastomas can lead to complications such as hydrocephalus, it is not a definitive feature that always accompanies these tumors. Similarly, glioblastomas are distinct from non-invasive tumors of the meninges, as they arise from glial cells within the brain tissues rather than from the protective membranes surrounding the brain. Thus, the characterization of glioblastoma multiforme highlights its high-grade status and invasive patterns, making option B the most accurate choice.