耳前部に発生した孤立性線維性腫瘍の1例 [in Japanese] A case of solitary fibrous tumor of the preauricular region [in Japanese]
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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.<BR>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.<BR>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.<BR>On March 28, 2001, tumor resection was performed by an external approach with the patient under general anesthesia.<BR>Histopathologically and immunohistochemically, the diagnosis was SFT.<BR>The postoperative course was good, and there has been no evidence of tumor recurrence as of 3 years after the operation.<BR>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.
- Journal of Oral Surgery Society of Japan
Journal of Oral Surgery Society of Japan 50(4), 239-242, 2004-04-20
Japanese Society of Oral and Maxillofacial Surgeons