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Neuroradiologic characteristics of astroblastoma
John W Bell1, Anne G Osborn, Karen L Salzman
1Department of Radiology, University of Utah, 50 North Medical Drive, Salt Lake City, UT, 84132, USA. johnandmelanie@juno.com
Neuroradiology
|January 12, 2007
Summary
Astroblastoma, a rare brain tumor, presents distinct imaging features on CT and MRI. This study identifies key characteristics to differentiate it from other brain neoplasms, aiding in diagnosis.
Area of Science:
- Neuro-oncology
- Radiology
- Pathology
Background:
- Astroblastoma is a rare glial tumor with an uncertain origin.
- Previous descriptions of its radiologic appearance are limited.
- Distinguishing astroblastoma from other brain tumors based on imaging is challenging.
Purpose of the Study:
- To report the largest imaging series of astroblastoma to date.
- To delineate the CT and MRI features of astroblastoma.
- To identify distinguishing imaging features for differential diagnosis.
Main Methods:
- Retrospective review of radiologic images, pathology reports, and clinical information from 12 patients.
- Tabulation of CT and MRI findings including location, morphology, signal intensity, and enhancement patterns.
Main Results:
- The study included 12 patients (0-50 years, mean 20), with a strong female predominance (11:1).
- All tumors were supratentorial, with 58% exhibiting multiple intratumoral cysts.
- Tumor enhancement patterns included strong rim enhancement (75%) or no rim enhancement (25%).
Conclusions:
- Imaging features of astroblastoma were identified in 12 cases.
- Key distinguishing features include age, supratentorial location, heterogeneous enhancement, rim enhancement, and a multicystic appearance.
- Less common but significant findings include intraventricular location, intratumoral hemorrhage with fluid-fluid levels, and dural tails.
