Descending tentorial herniation: findings on computed tomography

Area of Science:

• Radiology
• Neurology
• Neuroimaging

Background:

• Descending tentorial herniation (DTH) is a critical neurological condition.
• Early diagnosis of DTH is crucial for timely intervention and improved patient outcomes.
• Computed tomography (CT) is a primary imaging modality for evaluating intracranial pathologies.

Purpose of the Study:

• To describe the computed tomography (CT) findings associated with descending tentorial herniation (DTH).
• To identify early radiological signs indicative of impending DTH.
• To correlate CT findings with the stages and complications of DTH.

Main Methods:

• Review of computed tomography (CT) scans in patients diagnosed with descending tentorial herniation (DTH).
• Analysis of cisternal spaces, brainstem structures, and ventricular morphology on CT.
• Correlation of imaging findings with clinical presentation and outcomes.

Main Results:

• Encroachment on the suprasellar cistern is an early indicator of DTH.
• Brainstem rotation/shift and widening of crural/ambient cisterns signify actual herniation.
• Obliteration of cisternal spaces, aqueductal compression, and contralateral temporal horn widening are advanced signs.

Conclusions:

• CT is effective in diagnosing DTH and its progression.
• Specific CT findings can predict the severity and potential complications of DTH.
• Radiological identification of DTH guides clinical management and prognostic assessment.