title: Juvenile angiofibroma of the maxillary sinus. A case report.
abstract: The clinicopathological features of a rare case of juvenile angiofibroma originating from the maxillary sinus of a 13-year-old boy are reported. This tumor was composed of angiomatous and fibrous structures. The analysis of nucleolar organizer regions (NOR) of the various components of this tumor indicated that the fundamental elements were the fibroblastic cells, rather than the vascular endothelial cells.
authors.affiliation: Department of Oral Pathology, Kagoshima University Dental School, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Kitano
authors.forename: G
authors.initials: G
authors.lastname: Landini
authors.forename: T
authors.initials: T
authors.lastname: Mimura
mesh_terms: D000293:Adolescent; D004730:Endothelium, Vascular / Q000473:pathology; D005347:Fibroblasts / Q000473:pathology; D006097:Granulation Tissue / Q000473:pathology; D006470:Hemorrhage / Q000473:pathology; D018219:Histiocytoma, Benign Fibrous / Q000098:blood supply / Q000473:pathology*; D006801:Humans; D008297:Male; D008444:Maxillary Sinus Neoplasms / Q000098:blood supply / Q000473:pathology*; D009697:Nucleolus Organizer Region / Q000648:ultrastructure; D013927:Thrombosis / Q000473:pathology