What does all this mean? Does this indicate the need for additional sinus surgery? I am a 54 yo woman with two prior sinus surgeries. CT sinus without contrast History: 473.9 Unspecified sinusitis (chronic), chronic sinusitis. History of sinus surgery. Unenhanced sinus CT: Axial images with sagittal and coronal reformatted images. Compare November 10, 2010 Bilateral uncinectomies and ethmoidectomies as before. Moderate polypoid mucosal thickening left maxillary and left ethmoid remnants. Mild mucosal thickening left frontal sinus. Moderate because of thickening left sphenoid sinus. Right frontal sinus appears patent. Mild mucosal thickening right ethmoid and maxillary ostia. Nasal septum is essentially midline. Impression: 1. Moderate mucosal thickening left maxillary, ethmoid, sphenoid sinuses. Associated narrowing left ethmoid, maxillary and frontal sinuses. 2. Status post bilateral uncinectomies, ethmoidectomies. These extend to the frontoethmoidal recesses. 3. Changes on the current exam are more pronounced than those from November of 2010.