title: Ectopic tonsillar tissue in the nasal septum.
abstract: A rare case of hypertrophied lymphoid tissue in the nasal septum considered to be an ectopic tonsil was reported. The patient was a 53-year-old male, and a polypoid mass attached to the septal wall by a stalk was removed. Histological examination showed that the tumour was an ectopic hyperplastic tonsil presenting in the nasal septum. The pathogenesis of this tumour was not clear, but it was considered as hyperplasia or a new formation of primary or secondary lymphoid follicles. This is the first case report of such a rare condition.
mesh_terms: D002828:Choristoma / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009300:Nasal Septum; D009669:Nose Neoplasms / Q000175:diagnosis* / Q000473:pathology; D014066:Palatine Tonsil