Sinonasal Myospherulosis and Paraffin Retention Cysts Suggested by CT: Report of a Case

Abstract

Sinonasal myospherulosis is a foreign body reaction to lipid material used on nasal packing at the conclusion of paranasal sinus surgery. Rare cases have been sporadically reported. We report a case found in a 79-year-old female 8 months after functional endoscopic sinus surgery during which sinus cavities had been packed with gauze coated with Terra-Cortril (a paraffin-based tetracycline/steroid ointment). The preoperative diagnosis was suggested during CT of the paranasal sinuses by the presence of macroscopic paraffin retention cysts having a characteristic fat density. To our knowledge, our case represents the first report of sinonasal myospherulosis suggested by CT. © 2011 Springer Science+Business Media, LLC.