title: Radiological pitfalls with laryngopharyngeal injectables.
abstract: The aim of this report was to describe the computed tomography features of injected carboxymethylcellulose and how it can be mistaken for tumor recurrence. Carboxymethylcellulose is a low-density injectable indicated for short-term vocal fold augmentation. When used in patients with head and neck cancer, differentiating this agent from a neoplastic recurrence can be difficult on imaging. The imaging findings of five patients who received carboxymethylcellulose augmentation are presented to illustrate a potential pitfall of image interpretation. When injectable carboxymethylcellulose is used in cancer patients, knowledge of the injection sites, material used, and procedural history can avoid misinterpretation of monitory imaging.
authors.affiliation: Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA.
authors.forename: Stefan W
authors.initials: SW
authors.lastname: Shuaib
authors.forename: Andrew A
authors.initials: AA
authors.lastname: Potter
authors.forename: Lawrence E
authors.initials: LE
authors.lastname: Ginsberg
authors.forename: Michael E
authors.initials: ME
authors.lastname: Kupferman
mesh_terms: D000368:Aged; D002266:Carboxymethylcellulose Sodium / Q000008:administration & dosage*; D005260:Female; D005500:Follow-Up Studies; D006258:Head and Neck Neoplasms / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D007267:Injections; D007825:Laryngectomy; D058753:Laryngoplasty / Q000379:methods*; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D014826:Vocal Cord Paralysis / Q000209:etiology / Q000628:therapy*; D014827:Vocal Cords; D014833:Voice Quality
chemical_list: D002266:Carboxymethylcellulose Sodium