Characteristics of Chronic Rhinosinusitis with Nasal Polyps Based on Allergic Mucin and Fungal Elements in Patients Undergoing Revision Endoscopic Sinus Surgery.

This study sought to document the features in chronic rhinosinusitis with nasal polyp (CRSwNP) patients undergoing revision endoscopic sinus surgery (RESS), based on presence or absence of allergic mucin (AM) and fungal elements (F). A retrospective chart review of RESS cases collected Lund Mackay score (LMS), endoscopic, microbiological, histopathological, surgical and follow-up data of these patients. Patients were categorised into AM + F +, AM + F-, AM-F + and AM-F- subgroups based on the presence or absence of AM and F. The total serum IgE was significantly higher ( p  > 0.001) in the AM + F + subgroup. Other factors analysed including LMS, duration from previous surgery, comorbidities, degree of inflammation and disease recurrence showed no specific predilection among subgroups. Patients with a retained middle turbinate showed lesser ( p  = 0.04) recurrence on follow-up. Subgroups of recurrent CRSwNP showed similar characteristics and had further disease recurrence which was independent of allergic mucin and fungal elements. The presence of an intact healthy middle turbinate could reduce early disease recurrence following RESS.