Non-Mucosa Sparing (Reboot) Surgery as a Possible Rescue Therapy in Patients Locally Unresponsive to Biologics.

Objective: Evaluation of effectiveness of non-mucosa-sparing (eg, reboot) surgery in patients with chronic rhinosinusitis with nasal polyps (CRSwNP), poorly responders to mAb therapy, who failed repeated comprehensive endoscopic surgeries. Methods: Retrospective observational study. Patients who were under mAb for a comorbid condition but still had no control over their CRSwNP were included. Data collected were preoperative tissue eosinophilia, nasal polyp score (NPS), 22-item sinonasal outcome test (SNOT-22), visual analog scale (VAS) for nasal symptoms, Lund-Kennedy score for nasal crusts (LK-c) and synechiae (LK-s), and Lund-Mackay score (LMS). The same data were also collected postoperatively (at 12 months), besides LMS, and compared. Results: Overall, 20 patients were included. Pre-reboot scores were: NPS = 4.95 ± 1.70; SNOT-22 = 63.90 ± 19.15; VAS-global = 7.06 ± 1.50; LM = 19.0 ± 4.01; LK-c = 1.10 ± 0.64; and LK-s = 1.30 ± 0.73. Tissue biopsies revealed a high density of eosinophils in all cases, ≥10/HPF (range 10-60). Mean postoperative outcomes were: NPS = 0; SNOT-22 = 17.90 ± 6.80; VAS-global = 1.91 ± 1.17; LK-c = 1.45 ± 0.51; and LK-s = 1.50 ± 0.61. The difference of mean pre- and postoperative scores was significant for both NPS, SNOT-22 and VAS-global (P < .001). No differences were observed for LK-c and LK-s (P > .05). Nasal specimens showed markedly reduced tissue eosinophils (100% of cases). Conclusion: Reboot sinus surgery might be an effective solution for recalcitrant CRSwNP patients unresponsive to mAbs and multiple sinus surgeries.