Introduction: Giant cell reparative granuloma (GCRG) is a rare benign fibrous-osseous neoplasm that mostly involves maxilla and mandible. Only a few cases of GCRG in the nasal cavity have been reported so far.

  Case Report: A 37-year-old man was referred to the otolaryngology clinic with the symptoms of left-sided nasal obstruction and bloody discharge since 3 years ago and proptosis since 3 months ago. CT-scan and MRI showed a heterogeneous mass with fluid-fluid level that had caused severe bony destruction. Biopsy confirmed the diagnosis of GCRG.

  Conclusion: Although GCRG is rare, its clinical and radiologic characteristics should be studied. This lesion should be considered in differential diagnosis when clinical data, CT-scan and MRI findings show a fibrous-osseous lesion in the nasal cavity.