title: Botryoid rhabdomyosarcoma of the nose: pitfalls of pathology.
abstract: A 2-year-old Swiss boy was referred to our hospital because of an obstructive sleep apnea syndrome with suspected recurrent choanal polyp. During surgery, a polypoid soft mass was found in the right nose and extirpated. The histology of the resected polypoid tumor seemed compatible with a polyp; however, immunohistochemistry revealed a botryoid rhabdomyosarcoma. Rhabdomyosarcomas are rare. The most important differential diagnoses for rhabdomyosarcoma are discussed and methods available for differentiating are included.
authors.affiliation: Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University of Bern, Switzerland. marco.caversaccio@insel.ch
authors.forename: M
authors.initials: M
authors.lastname: Caversaccio
authors.forename: E
authors.initials: E
authors.lastname: Stauffer
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D009298:Nasal Polyps / Q000473:pathology / Q000601:surgery; D010255:Paranasal Sinus Neoplasms / Q000473:pathology* / Q000601:surgery; D018233:Rhabdomyosarcoma, Embryonal / Q000473:pathology* / Q000601:surgery