Related Experiment Videos
Enhanced MR imaging of hypertrophic pachymeningitis
1Department of Radiology, Jefferson Medical College, Philadelphia, PA 19107, USA.
Objective:
This report illustrates the contrast enhancement characteristics on MR imaging of three patients with hypertrophic pachymeningitis and provides an explanation for the observed imaging findings.
Conclusion:
A differential pattern of enhancement, consisting of intense enhancement of the peripheral margin of the abnormal pachymeninges, was present in all cases. In two patients, much of the remaining abnormal pachymeninges did not enhance at all. On the basis of the microscopic pathology of hypertrophic pachymeningitis, the physiology of normal meningeal enhancement on MR imaging, and the described MR appearance of other pachymeningeal lesions, this differential pattern of enhancement should strongly suggest the diagnosis of hypertrophic pachymeningitis.
Insights
Hypertrophic pachymeningitis shows a distinct pattern on MR imaging, with intense peripheral enhancement of the meninges. This characteristic enhancement helps in diagnosing this rare condition.
Area of Science:
- Neurology
- Radiology
- Pathology
Background:
- Hypertrophic pachymeningitis is a rare condition characterized by thickening of the dura mater.
- Understanding its imaging features is crucial for accurate diagnosis and management.
Purpose of the Study:
- To describe the contrast enhancement patterns of hypertrophic pachymeningitis on Magnetic Resonance (MR) imaging.
- To correlate imaging findings with pathological characteristics and explain the observed enhancement.
Main Methods:
- Retrospective analysis of MR imaging in three patients diagnosed with hypertrophic pachymeningitis.
- Detailed evaluation of contrast enhancement characteristics of the abnormal meninges.
Main Results:
- All three patients exhibited intense enhancement at the peripheral margin of the thickened dura.
- In two patients, the central portion of the abnormal pachymeninges showed minimal or no enhancement.
Conclusions:
- A differential enhancement pattern, with prominent peripheral enhancement, is characteristic of hypertrophic pachymeningitis on MR imaging.
- This specific enhancement pattern, when considered alongside pathology and other meningeal lesions, strongly suggests the diagnosis.