Which of the following describes a meningioma?
A highly malignant tumor that originates from astrocytes.
A benign tumor arising from the meninges that surround the brain.
A tumor of the pituitary gland that always causes hormone-related symptoms.
A tumor of the cranial nerve VIII, responsible for hearing.
The Correct Answer is B
Meningiomas are typically benign tumors that arise from the meninges, the protective layers surrounding the brain and spinal cord. Although they are usually slow-growing and noncancerous, they can still cause neurological symptoms due to compression of adjacent brain tissue. Early recognition is important because even benign tumors can increase intracranial pressure and affect neurological function if left untreated.
Rationale for correct answer:
B. A benign tumor arising from the meninges that surround the brain: This is the defining feature of meningiomas. Their symptoms result from pressure effects rather than infiltration of brain tissue.
Rationale for incorrect answers:
A. A highly malignant tumor that originates from astrocytes: This describes glioblastoma multiforme, not meningioma.
C. A tumor of the pituitary gland that always causes hormone-related symptoms: Pituitary adenomas may or may not produce hormones and are not meningiomas.
D. A tumor of the cranial nerve VIII, responsible for hearing: This describes a vestibular schwannoma (acoustic neuroma), not a meningioma.
Take home points
- Meningiomas are usually benign and arise from the meninges.
- They can compress brain tissue and raise ICP even without malignancy.
- Differentiating tumor types is crucial for prognosis and treatment planning.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Brain tumors are classified as primary or metastatic based on where they originate. Primary brain tumors develop from cells within the brain or meninges, whereas metastatic brain tumors spread from cancers in other organs, such as the lungs, breast, or kidneys. Understanding this distinction is essential for diagnosis, treatment planning, and prognosis, as metastatic tumors often indicate systemic cancer progression.
Rationale for correct answer:
B. Primary tumors originate from cells within the brain, while metastatic tumors originate elsewhere and spread to the brain: This is the fundamental difference between the two types. It guides diagnostic evaluation and affects the overall treatment approach.
Rationale for incorrect answers:
A. Primary tumors are more common in adults, while metastatic tumors are more common in children: The opposite is generally true; metastatic tumors are more common in adults, and some primary brain tumors (like medulloblastoma) are more common in children.
C. Primary tumors are always malignant, and metastatic tumors are always benign: Both primary and metastatic tumors can be malignant, and benign metastatic tumors do not exist.
D. Primary tumors are typically easier to treat than metastatic tumors due to their slower growth rate: Treatment difficulty depends on tumor type, location, and accessibility, not simply growth rate.
Take home points
- Primary tumors originate in the brain, while metastatic tumors spread from another organ.
- Metastatic tumors are more common in adults and usually indicate systemic cancer spread.
- Tumor origin influences prognosis, treatment options, and long-term outcomes.
Correct Answer is C
Explanation
Benign brain tumors are noncancerous growths that develop only within the brain tissue and do not metastasize to other parts of the body. Unlike malignant tumors, they remain localized but can still cause significant neurological symptoms by compressing nearby brain structures. Educating patients about the localized nature of benign tumors helps reduce anxiety and clarify the difference from metastatic brain cancer.
Rationale for correct answer:
C. It is limited to brain tissue: Benign brain tumors do not spread to other organs. They grow locally and only affect surrounding brain structures.
Rationale for incorrect answers:
A. It can spread to breasts and kidneys: Benign tumors do not metastasize to other organs; only malignant tumors have this capability.
B. It can develop in your GI tract: Tumors in the gastrointestinal tract would be separate conditions and are unrelated to a primary brain tumor.
D. It probably started in another area of your body and spread to your brain: This describes metastatic brain cancer, not a benign primary tumor.
Take home points
- Benign brain tumors remain localized and do not metastasize.
- They may still cause neurological problems due to compression.
- Patient education helps reduce fear and clarify tumor behavior.
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