Botryoid rhabdomyosarcoma of the nose: Pitfalls of pathology

A 2-year-old Swiss boy was referred to our hospital because of an obstructi ve sleep apnea syndrome with suspected recurrent choanal polyp. During surg ery, a polypoid soft mass was found in the right nose and extirpated. The h istology df the resected polypoid tumor seemed compatible with a polyp; how ever, immunohistochemistry revealed a botryoid rhabdomyosarcoma. Rhabdomyos arcomas are rare. The most important differential diagnoses for rhabdomyosa rcoma are discussed and methods available for differentiating are included. Copyright (C) 2001 S. Karger AG, Basel.