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Am J Surg Pathol. 2004 Jan;28(1):139-42.

Solitary fibrous tumor of the cerebellopontine angle with salivary gland heterotopia: a unique presentation.

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  • 1Department of Pathology, Mayo Foundation, Rochester, Minnesota 55902, USA.

Abstract

We report the unique association of a solitary fibrous tumor of the cerebellopontine angle with ectopic salivary gland tissue in a 53-year-old woman. The patient, diagnosed 21 years earlier with a right cerebellopontine angle fibrous meningioma, presented with a recurrent mass, which, upon surgical removal, showed features of a solitary fibrous tumor. Strong and diffuse immunoreactivity to CD34 and BCL-2 and a negative epithelial membrane antigen immunostain confirmed the diagnosis. Admixed with the spindle cell neoplasm, a bland glandular element composed of small glands and variably dilated tubules was noted. The vague tubuloacinar arrangement of the glands and the presence of acinar cells with a granular, periodic acid-Schiff-positive, basophilic cytoplasm, resembling serous type acini, were features of benign, although ectopic, salivary gland tissue. The presence of a myoepithelial cell layer, surrounding some of the acini and highlighted by the smooth muscle actin immunostain, strengthened this interpretation.

PMID:
14707876
[PubMed - indexed for MEDLINE]
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