Intraoral perineurioma, soft tissue type: Report of five cases, including 3 intraosseous examples, and review of the literature

Ioannis G. Koutlas, Bernd W. Scheithauer, Andrew L. Folpe

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Soft tissue type perineuriomas (STP) are uncommon tumors, oral examples being very rare. They have been described in the mandible, gingiva, lips, retrotonsillar mucosa and maxillary vestibule. Herein, we report the clinicopathologic features of five STP, two affecting the buccal mucosa and three the mandible. Three patients were women and two men. All tumors were characterized by a proliferation of cytologically bland, mitotically inactive spindled cells with round, ovoid or spindled nuclei, embedded in a variably collagenous and myxoid matrix. Interestingly, two mandibular tumors featured psammoma bodies and one, in addition, contained irregular calcifications. Tumor cells showed the immunohistochemical profile of perineurial cells including epithelial membrane antigen, Glut-1, claudin-1 and collagen type IV. S100 and neurofilament proteins were not expressed by the tumor cells. A few minute, peripherally situated, entrapped nerves were identified. All tumors were reported gross-totally excised and no recurrences have taken place. The clinical characteristics of STP are summarized and its differential diagnosis relative to other spindle cells tumors and meningioma is discussed.

Original languageEnglish (US)
Pages (from-to)113-120
Number of pages8
JournalHead and Neck Pathology
Volume4
Issue number2
DOIs
StatePublished - Jun 1 2010

Keywords

  • Jaw
  • Oral cavity
  • Soft tissue type perineurioma

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