title: Solitary fibrous tumor of the nasal cavity and paranasal sinuses: A case report.
abstract: Solitary Fibrous Tumors (SFT) are rare neoplasms first described in 1931 by Klemperer and Rabin. SFT's have mesenchymal rather than mesothelial origin. They arise mostly from serous membranes, although they also originate in other regions such as: the urogenital system, mediastinal space, lungs, vulva, orbit, thyroid, nasopharyngeal region, larynx, salivary glands. SFT of the nasal cavity and paranasal sinuses are extremely rare. To the year 2014 only 33 cases were reported in English literature.
  
  
  METHODS
  We present a case of 58-year-old man with solitary fibrous tumor localized in the right nasal cavity. The patient presented with an 18-month history of epistaxis and right epiphora. He also reported unilateral right-sided nasal obstruction over the last 6 months.
  
  
  RESULTS
  CT disclosed a large, homogeneous mass in the nasal cavity infiltrating and destroying nasal septum, turbinates, occupying right maxillary sinus, right ethmoid, extending to the right frontal sinus and right orbit. The infiltration of the right oculus was suspected. Biopsy revealed fibrocytes and histiocytes proliferation with rich vascularization. There was no evidence of histological malignancy. Pathology results were significant for SFT.
  
  
  CONCLUSIONS
  The tumor was excised by means of right lateral rhinotomy. Neither the extension to the right maxillary sinus nor the orbital floor infiltration was seen intraoperatively despite the fact, that it was observed in computed tomography before the surgery. The patient had a 5.5-year follow up after surgery, radiological examination showed no recurrence.
authors.affiliation: Principal, Department of Cranio-Maxillofacial and Oncological Surgery, Medical University of Lodz, Lodz, Poland.
authors.forename: Bogna
authors.initials: B
authors.lastname: Zielińska-Kaźmierska
authors.affiliation: Department of Cranio-Maxillofacial and Oncological Surgery, Medical University of Lodz, Lodz, Poland.
authors.forename: Joanna
authors.initials: J
authors.lastname: Grodecka
authors.affiliation: Resident, Department of Cranio-Maxillofacial and Oncological Surgery, Medical University of Lodz, Lodz, Poland.
authors.forename: Adam
authors.initials: A
authors.lastname: Szyszkowski
keywords: Nasal cavity; Paranasal sinuses; Solitary fibrous tumor