title: [A case of nasopharyngeal amyloidosis].
abstract: A case of amyloidosis localized in the nasopharynx was reported. The patient was a 62-year-old female who complained of persistent nasal obstruction. The gross appearance of this tumor showed a thumb-sized red-yellowish mass, in part covered with white coating. The systemic amyloidosis was excluded by several clinical examinations including rectal biopsy. Histopathological examination revealed diffuse deposits of homogeneous eosinophilic substances. A polarized microscopic examination by congo-red stain showed that deposit's substances were amyloid. A typical amyloid fibril was observed under electron microscope. The mass was removed with Beckmann adenotome. Bleeding was minimal.
authors.forename: H
authors.initials: H
authors.lastname: Kumagami
authors.forename: T
authors.initials: T
authors.lastname: Matzumura
authors.forename: S
authors.initials: S
authors.lastname: Aoki
mesh_terms: D000686:Amyloidosis / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D008854:Microscopy, Electron; D008859:Microscopy, Polarization; D008875:Middle Aged; D009302:Nasopharyngeal Diseases / Q000473:pathology* / Q000601:surgery