2018 Volume 64 Issue 7 Pages 412-417
Solitary fibrous tumors (SFTs) are mesenchymal neoplasms. Although they are most frequently located in the pleura, they have also been observed in other locations. We report two cases of SFTs in the buccal region of a 78-year-old man and 56-year-old woman, respectively. The chief complaint of both patients was a swelling of the buccal space. Each patient underwent surgical excision after receiving a clinical diagnosis of a buccal tumor. We obtained a definitive diagnosis in the female patient, but the tumor decreased in size after the biopsy. The histopathological characteristics of both tumors included proliferating spindle cells and thin-walled, branching, staghorn-like vascular patterns.
Immunohistochemically, both cases were positive for CD34 and STAT6. The male patient showed no recurrence or metastasis 2 years 4 months after surgery, but the female patient had recurrence 2 months postoperatively. Long-term follow-up is necessary because of the unpredictable recurrence or metastasis associated with SFTs.
