Japanese Journal of Oral and Maxillofacial Surgery
Online ISSN : 2186-1579
Print ISSN : 0021-5163
ISSN-L : 0021-5163
Case report
A case of intramuscular lipoma extending to the infratemporal fossa that was associated with mental nerve neuropathy as an initial symptom
Yasuto FUKUIShigeaki TORATANIKoichi KOIZUMIShinji MATSUMOTOYasutaka HAYASHIDOTetsuji OKAMOTO
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2009 Volume 55 Issue 11 Pages 580-584

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Abstract

An intramuscular lipoma is a deep-seated heterotopic benign mesenchymal tumor that originates in a skeletal muscle and infiltrates the adjacent muscle. It tends to recur after excision. This tumor is also referred to as “infiltrating lipoma" and differential diagnosis from well-differentiated liposarcoma is necessary.
Intramuscular lipoma is very rare in the oral and maxillofacial region. We describe a case of intramuscular lipoma occurring in the musculus pterygoideus medialis or lateralis that spread to the infratemporal fossa in association with mental nerve neuropathy in a 59-year-old man. With the patient under general anesthesia, we excised the tumor, including the circumferential tissue. At the 2.5-year postoperative evaluation, numbness had improved, with no evidence of recurrence.

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© 2009 Japanese Society of Oral and Mxillofacial Surgeons
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