title: Osteolipoma of the parapharyngeal space mimicking liposarcoma: a case report.
abstract: BACKGROUND
  Lipomas are the most common benign neoplasm of the head and neck. However, osteolipomas, a rare variant of lipoma, are uncommon in this location. When they occur, variations in location and radiographic presentation may obscure the diagnosis.
  
  
  RESULTS
  A 68-year-old man presented with left jaw pain and numbness in the maxillary (V-1) distribution. A CT angiography of the neck revealed a possible liposarcoma. Embolization of the mass was determined to be unfeasible. Consequently, surgical resection was performed revealing a benign osteolipoma.
  
  
  CONCLUSIONS
  We report a rare case of osteolipoma of the parapharyngeal space. Clinicians should be aware that the clinical and radiological features of patients with head and neck osteolipomas may mimic malignant neoplasms. When given deserved consideration, inappropriate treatment of an otherwise benign lesion may be avoided.
authors.affiliation: Pathology and Cell Biology, University of South Florida College of Medicine, Tampa, Florida, USA.
authors.forename: William
authors.initials: W
authors.lastname: Bulkeley
authors.forename: Omie L
authors.initials: OL
authors.lastname: Mills
authors.forename: Americo
authors.initials: A
authors.lastname: Gonzalvo
authors.forename: Kondi
authors.initials: K
authors.lastname: Wong
mesh_terms: D000273:Adipose Tissue / Q000473:pathology; D000368:Aged; D002533:Cerebral Angiography; D006258:Head and Neck Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D008080:Liposarcoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D008297:Male