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[Differential-diagnostic problems with the brain abscess in axial computerized tomography (author's transl)]
Fortschritte Der Neurologie, Psychiatrie, Und Ihrer Grenzgebiete
|March 1, 1979
Summary
Diagnosing brain abscesses on CT scans is crucial. A ring-shaped finding without contrast enhancement may indicate an abscess due to its collagen-rich membrane.
Area of Science:
- Neurology
- Radiology
- Pathology
Background:
- Differential diagnosis of brain lesions on CT scans can be challenging.
- Ring-shaped findings on computerized tomography (CT) require careful interpretation.
Purpose of the Study:
- To discuss the differential diagnosis of brain abscesses in axial CT.
- To highlight key imaging features for identifying brain abscesses.
Main Methods:
- Analysis of three autoptically controlled cases with ring-shaped CT findings.
- Review of axial computerized tomography (CT) scans.
Main Results:
- A hyperdense anulus (ring) on CT, even without contrast enhancement, can be indicative of a brain abscess.
- This early hyperdense ring is attributed to the collagen-rich abscess membrane.
Conclusions:
- Brain abscess should be considered when a hyperdense anulus is observed on CT, particularly before contrast administration.
- The collagenous nature of the abscess membrane creates a unique CT finding not typically seen in other focal brain processes.