Angiomatoid fibrous histiocytoma on the hard palate: case report.

BACKGROUND: Angiomatoid fibrous histiocytoma (AFH) is a rare, soft tissue sarcoma, which is slow growing with low metastatic potential. We recently had a patient present with AFH, which had a palatal perforation and it looked like a cyst in the occlusal view. Therefore, the radiological and histological features of AFH are reported herein. In addition, the differential diagnosis for this lesion is also discussed with a review of the literature. CASE REPORT: A 23-year-old woman presented with a spontaneous perforation of the palate. Clinically, a painless and ulcerative lesion was shown on the mid-palate area. Radiological findings revealed a well-demarcated, homogeneous, oval-shaped radiolucent lesion in the occlusal view. Histological examination with incisional biopsy, showed a relatively well-defined cystic-like mass including tumor cells. Taking into consideration the histological and immunohistochemical findings, the presented lesion was diagnosed as AFH. Under general anesthesia, the patient underwent a modified cylindrical partial maxillectomy including safety margins. DISCUSSION: In the present case, clinically differential diagnosis can be made with various diseases that have palatal perforations such as trauma, infection, neoplasia, collagen vascular disease, and idiopathic conditions. The treatment recommended in the literature has been radial excision. The prognosis of the tumor has been favorable.