Fetal-Type Posterior Cerebral Artery: Should You Be Concerned? - Neurology

More Info

---

The presence of a fetal-type posterior cerebral artery (PCA) is generally considered a benign anatomical variant and is not typically associated with any significant health concerns. This variant occurs when the posterior cerebral artery is supplied primarily by the posterior communicating artery rather than the basilar artery. In the fetal-type configuration, the PCA is smaller and may not be as well-developed as in the typical adult configuration.
In your case, the MRI report indicating a left fetal-type PCA suggests that this is a normal anatomical variation rather than a pathological condition. Studies have shown that individuals with this variant do not have an increased risk of stroke or other cerebrovascular diseases compared to those with a typical PCA configuration. Therefore, it is unlikely that this anatomical variant is the cause of your recurrent dizziness.

Dizziness can arise from a multitude of causes, including vestibular disorders, neurological issues, cardiovascular problems, or even anxiety. Since you have already consulted with specialists in otolaryngology and neurology and have undergone various tests that returned normal results, it may be beneficial to explore other potential causes of your dizziness. These could include:
1. Vestibular Disorders: Conditions such as benign paroxysmal positional vertigo (BPPV), vestibular neuritis, or Meniere's disease can lead to episodes of dizziness.

2. Cervical Issues: Problems related to the cervical spine, such as cervical spondylosis or vertebral artery insufficiency, can also contribute to dizziness.

3. Cardiovascular Factors: Orthostatic hypotension (a drop in blood pressure upon standing) or other cardiovascular issues may lead to dizziness.

4. Anxiety and Stress: Psychological factors can manifest physically, leading to sensations of dizziness or lightheadedness.

5. Medication Side Effects: If you are taking any medications, it is worth reviewing them with your physician to determine if dizziness could be a side effect.

6. Dehydration or Nutritional Deficiencies: Ensure you are adequately hydrated and receiving proper nutrition, as deficiencies in certain vitamins or minerals can also lead to dizziness.

Given the complexity of dizziness and its potential causes, it may be worthwhile to keep a diary of your symptoms, noting when they occur, their duration, and any associated factors (such as stress, diet, or physical activity). This information can be valuable for your healthcare provider in determining the underlying cause of your symptoms.

In summary, while the left fetal-type PCA is a benign anatomical variant and not a cause for concern, it is essential to continue investigating the underlying reasons for your dizziness. A thorough evaluation by a neurologist or a specialist in vestibular disorders may provide further insights and help you find effective management strategies for your symptoms. Always feel free to reach out to your healthcare provider with any concerns or questions you may have regarding your health.