TY - JOUR
T1 - Intraoral perineurioma, soft tissue type
T2 - Report of five cases, including 3 intraosseous examples, and review of the literature
AU - Koutlas, Ioannis G.
AU - Scheithauer, Bernd W.
AU - Folpe, Andrew L.
PY - 2010/6
Y1 - 2010/6
N2 - 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.
AB - 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.
KW - Jaw
KW - Oral cavity
KW - Soft tissue type perineurioma
UR - http://www.scopus.com/inward/record.url?scp=77953081963&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77953081963&partnerID=8YFLogxK
U2 - 10.1007/s12105-010-0177-3
DO - 10.1007/s12105-010-0177-3
M3 - Article
C2 - 20401642
AN - SCOPUS:77953081963
SN - 1936-055X
VL - 4
SP - 113
EP - 120
JO - Head and Neck Pathology
JF - Head and Neck Pathology
IS - 2
ER -
