Histologic sections from a mass originating from the meninges would most likely reveal
**Core Concept**
The question is testing the student's knowledge of meningeal tumors and their histological characteristics. Meningeal tumors can originate from the meninges, which are the protective membranes surrounding the brain and spinal cord. These tumors can be benign or malignant and have distinct histological features.
**Why the Correct Answer is Right**
Meningiomas are the most common type of meningeal tumor, accounting for approximately 25-30% of all primary brain tumors. Histologically, they are characterized by a whorled or psammomatous pattern, often with a prominent perivascular arrangement of tumor cells. This is due to the expression of the neurofibromin 2 (NF2) gene, which is involved in the regulation of the cell cycle. The tumor cells in meningeal tumors often exhibit a low-grade malignancy, with a slow growth rate.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not accurately describe the histological characteristics of meningeal tumors.
**Option B:** This option is incorrect as it describes a different type of tumor, such as a schwannoma, which originates from the Schwann cells of the peripheral nervous system.
**Option C:** This option is incorrect as it describes a type of tumor that is not typically associated with the meninges.
**Clinical Pearl / High-Yield Fact**
Meningiomas are often associated with NF2 mutations, which can also lead to the development of other types of tumors, such as schwannomas and ependymomas. This is an important clinical correlation for students to remember.
**Correct Answer: C. A type of meningioma characterized by a whorled or psammomatous pattern, often with a prominent perivascular arrangement of tumor cells.**