Normal neuroanatomical variants that may be misinterpreted as disease entities

Area of Science:

• Neuroradiology
• Neuroanatomy
• Developmental Biology

Background:

• Diagnostic neuroimaging frequently reveals variations in normal development and benign incidental anomalies.
• Misinterpretation of these findings can lead to unnecessary investigations, prolonged follow-up, and patient distress.

Purpose of the Study:

• To review common benign intracranial anomalies encountered in specialist neuroradiology.
• To provide guidance on recognizing normal neuroanatomical variants, including pineal and pituitary cysts, vascular anomalies, and perivascular spaces.

Main Methods:

• Review of common benign intracranial anomalies.
• Discussion of embryology, development, and imaging features.
• Analysis of clinical relevance and differential diagnoses.

Main Results:

• Detailed descriptions of imaging characteristics for various benign intracranial anomalies.
• Differentiation between normal variants and pathological conditions.
• Emphasis on the importance of accurate recognition to avoid misdiagnosis.

Conclusions:

• Accurate identification of benign intracranial anomalies is crucial in diagnostic neuroimaging.
• Understanding normal neuroanatomical variants reduces unnecessary patient anxiety and healthcare costs.
• This review serves as a guide for clinicians managing incidental findings on neuroimaging.