title: Metastatic breast carcinoma presenting as a choanal polyp.
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000175:diagnosis* / Q000473:pathology; D002277:Carcinoma / Q000175:diagnosis / Q000473:pathology / Q000556:secondary; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008875:Middle Aged; D009298:Nasal Polyps / Q000556:secondary*; D009362:Neoplasm Metastasis