Answer and Discussion of Quiz Set: N-009

2.    Which of the following statements about meningioma is true?  Answer

A.  Meningiomas are most commonly seen in children with increased incidence in female. Intracranial meningiomas are more common than spinal meningiomas and occasional tumors can arise from the ventricles.

B.  Meningiomas are most commonly seen in adults with increased incidence in female. Intracranial meningiomas are more common than spinal meningiomas and occasional tumors can arise from the ventricles.

C.  Meningiomas are most commonly seen in children with equal incidence in male and female. Intracranial meningiomas are more common than spinal meningiomas and occasional tumors can arise from the ventricles.

D.  Meningiomas are most commonly seen in children with equal incidence in male and female. Spinal meningiomas are most common and meningiomas do not arise within the ventricles.

E. Meningiomas are most commonly seen in children with equal incidence in male and female. Intracranial meningiomas are more common than spinal meningiomas and occasional tumors can arise from the ventricles. Uncommon cases can be found in the orbit.

Answer and Discussion: The answer is (C). Although the WHO classification for brain tumors has 4 grade (I to IV), meningioma, atypical meningioma, and anaplastic meningioma comprise only three grades. There is no grade IV tumor for meningioma. The WHO system does not have grade V.