Types of Cerebral Herniation and Their Imaging Features

Area of Science:

• Radiology
• Neurology
• Medical Imaging

Background:

• Cerebral herniation involves brain tissue shifting, a critical condition needing rapid diagnosis.
• Imaging findings vary from subtle to overt displacement of brain structures.
• Familiarity with brain herniation subtypes is essential for radiologists.

Purpose of the Study:

• To review the imaging spectrum and classification of cerebral herniation subtypes.
• To emphasize the importance of recognizing specific radiologic findings for accurate diagnosis.
• To guide radiologists in diagnosing brain herniation using a structured approach.

Main Methods:

• Classification of brain herniation into intracranial (subfalcine, transtentorial, tonsillar) and extracranial types.
• Discussion of potential complications: brain damage, nerve/vessel compression, hydrocephalus.
• Proposed six-key-point diagnostic approach integrating clinical and imaging data.

Main Results:

• Cerebral herniation can cause significant neurological deficits by compressing structures or obstructing cerebrospinal fluid flow.
• Each hernia type is associated with specific clinical syndromes and imaging findings.
• CT and MRI are vital for diagnosis, treatment guidance, and prognosis, with CT often preferred for speed and availability.

Conclusions:

• Accurate diagnosis of cerebral herniation relies on understanding its subtypes, clinical manifestations, and imaging features.
• A systematic approach combining clinical history, examination, and imaging analysis is recommended.
• Prompt diagnosis via CT or MRI is fundamental for patient management and safety.