**Core Concept**
Neuronal tumors are a group of brain tumors that arise from the neural cells, including neurons and their precursors. These tumors can be benign or malignant and can occur in various locations within the brain.

**Why the Correct Answer is Right**
The correct answer is a tumor that does not arise from neural cells. To identify this, we need to consider the types of brain tumors and their origins. Neuronal tumors include neurocytomas, gangliogliomas, and central neurocytomas, which are all derived from neural cells. The correct answer would be a tumor that originates from another type of cell.

**Why Each Wrong Option is Incorrect**
**Option A:** Neurocytoma - This is a type of neuronal tumor that arises from neurons or their precursors.
**Option B:** Ganglioglioma - This is a mixed neuronal-glial tumor that arises from both neurons and glial cells, but it is still a neuronal tumor.
**Option C:** Meningioma - This is a type of tumor that arises from the meninges, the protective membranes surrounding the brain and spinal cord, but it is not a neuronal tumor.

**Clinical Pearl / High-Yield Fact**
Meningiomas are typically benign tumors that can cause symptoms due to their location and compression on surrounding brain tissue. They are often treated with surgery, and radiation therapy may be used in some cases.

**Correct Answer: C. Meningioma**