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Arch Pathol Lab Med. 1997 Nov;121(11):1207-9.

Rosenthal fibers and eosinophilic granular bodies in a classic acoustic schwannoma.

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1
Department of Pathology, University of Texas Southwestern Medical Center at Dallas 75235-9072, USA.

Abstract

We describe unique features seen in a case of classic acoustic schwannoma. In the central portion of the tumor, abundant Rosenthal fibers and occasional eosinophilic granular bodies were present. Rosenthal fibers are homogeneous eosinophilic structures commonly seen in central nervous system lesions, such as pilocytic astrocytoma, or in the gliotic tissues adjacent to slowly growing neoplasms and some congenital malformations. Eosinophilic granular bodies are also structural markers of slow-growing, well-differentiated neuroglial neoplasms, such as pleomorphic xanthoastrocytoma, ganglion cell tumors, and pilocytic astrocytoma. To the best of our knowledge, however, these two structures have never before been described in schwannomas.

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PMID:
9372750
[Indexed for MEDLINE]
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