@entity2460 of nasal cavity in XXXX with long-standing history of @entity2072 inhalation.

@entity1 @entity2283 @entity5 @entity4483 @entity2072 @entity2277 @entity2467 @entity2280 @entity2460
We report a solitary @entity5 in the nasal cavity of a 48-year-old @entity1 who presented with a history of bilateral nasal obstruction and long-standing @entity2072 inhalation. Physical examination revealed a large mass involving the right nasal cavity and extending into the posterior aspect of the left nasal cavity. The computed tomography scan showed opacification of airways. During surgery, the mass was found to involve the entire nasal cavity, with extension to the right maxillary sinus, posterior nasal airways, and left nasal cavity. The mass was completely excised. Pathologic examination revealed a polypoid mass 3.7 x 3.0 x 1.2 cm. This @entity5 was composed of spindle cells that were cytologically bland in a background of ropey and nodular collagen, giving a "patternless" pattern. Immunohistochemically, the neoplastic cells stained for @entity2280 and @entity2277 but not for @entity4483 protein, keratin, @entity2283 , HMB-45, and @entity2467 . This immunohistochemical pattern confirmed the diagnosis of solitary @entity5 . Although @entity2460 are usually found in the pleura, they can occur in various other locations, such as the orbit, nasal cavity, paranasal sinuses, mediastinum, breast, vagina, meninges, and soft tissues. This case is of interest because the @entity5 occurred in a @entity1 with prolonged @entity2072 inhalation. Such an association has not been previously described. The exact causal relationship between @entity2072 inhalation and the @entity5 is not known.
