Solitary fibrous tumor (SFT) was first described in 1931. This tumor often arises in the pleura, but is uncommon in the head and neck region.
We report a case of SET arising from the left preauricular region. The patient was a 29-year-old woman with a 4-year history of a painless mass in the left preauricular region.
Computed tomography showed a clearly demarcated tumor. On magnetic resonance imaging, the tumor showed low signal intensity on T 1 weighted images and high signal intensity on T 2 weighted images.
On March 28, 2001, tumor resection was performed by an external approach with the patient under general anesthesia.
Histopathologically and immunohistochemically, the diagnosis was SFT.
The postoperative course was good, and there has been no evidence of tumor recurrence as of 3 years after the operation.
Since previous reports have indicated that 13 % to 37 % of SFTs are associated with local recurrence or are sometimes transformed to malignant tumors, long-term follow-up is very important.
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