Association of cytokine profile with prior treatment failure and revision surgery in chronic rhinosinusitis.

BACKGROUND: Inflammatory patterns in chronic rhinosinusitis (CRS) may predict disease severity, need for multiple sinus surgeries, and treatment response. This study analyzes nasal mucus inflammatory cytokine patterns in patients with (CRSwNP) and without (CRSsNP) nasal polyposis and their association with revision sinus surgery. METHODS: A total of 319 CRS patients who underwent sinus surgery were included. Cytokines were quantified in intraoperative mucus specimens using a multiplex flow cytometric bead assay. Cytokine expression patterns in patients with 0, 1, and ≥2 previous surgeries were analyzed using Kruskal-Wallis and principal component (PC) regression analyses. RESULTS: There were 122 (38%) patients with CRSsNP and 197 (62%) with CRSwNP. On univariate analysis, interleukin (IL)-1ß, IL-6, IL-8, and IL-21 were associated with increasing number of sinus surgeries in CRSsNP, as were IL-2, IL-4, IL-5, IL-6, IL-9, IL-17A, and tumor necrosis factor (TNF)-α in CRSwNP. PC analysis with continuous Poisson regression in CRSwNP demonstrated that high IL-5 and IL-13 and low IL-1ß, IL-12, and IL-21 were associated with more prior surgeries. In CRSsNP low IL-13 and high IL-5 and regulated-on-activation, normal T-cell-expressed and secreted (RANTES) were associated with more prior surgeries. Age remained a significant covariate in the full regression model for CRSsNP, but was nonsignificant in CRSwNP. CONCLUSION: In CRSwNP, elevated IL-5 and IL-13 levels were higher at time of surgery in patients with more prior surgeries. Type 2 cytokines in CRSsNP demonstrated mixed associations with revision surgery. For both phenotypes, IL-10, IL-12, and IL-21 were consistently lower as number of prior surgeries increased, suggesting that treatment-resistant disease may be modulated by impairment in these signaling pathways.

Current insight into treatment of chronic rhinosinusitis: Phenotypes, endotypes, and implications for targeted therapeutics.

Chronic rhinosinusitis is characterized by persistent locoregional mucosal inflammation of the paranasal sinuses and upper airway that has substantial associated health care costs. Personalized approaches to care that incorporate use of molecular biomarkers, phenotypes, and inflammatory endotypes is a major focus of research at this time, and the concurrent rise of targeted therapeutics and biologic therapies has the potential to rapidly advance care and improve outcomes. Recent findings suggest that improved understanding of chronic rhinosinusitis phenotypic and endotypic heterogeneity, and incorporation of these characteristics into clinical care pathways, may facilitate more effective selection of surgical and/or therapeutic interventions. Ultimately, these personalized approaches have the potential to target specific inflammatory pathways, increase efficacy, reduce costs, and limit side effects. This review summarizes recent advances in the identification and characterization of chronic rhinosinusitis phenotypes, endotypes, and biomarkers and reviews potential implications for targeted therapeutics.

Chronic invasive fungal sinusitis with orbital and olfactory cleft involvement secondary to indolent mucormycosis.

PURPOSE: Chronic invasive fungal sinusitis secondary to indolent mucormycosis is a rare clinical entity, and the ideal management is controversial. A case of indolent mucormycosis successfully managed with conservative debridement and retrobulbar amphotericin B is herein reported. OBSERVATIONS: A 42-year-old man with diabetes mellitus and kidney transplant presented with chronic invasive fungal sinusitis with left orbital involvement from indolent mucormycosis. The patient was treated with aggressive systemic antifungal therapy, left retrobulbar injection of liposomal amphotericin B, reduction in immunosuppression, and conservative surgical debridement. Although the left olfactory cleft was involved, the cribriform plate was not resected due to risk of seeding the intracranial space. Given mild orbital involvement, no orbital debridement was performed and the patient had resolution of his orbital findings with systemic and retrobulbar amphotericin B. The patient had clinical and radiographic stability at 6-month follow-up. CONCLUSIONS: Conservative resection with subsequent long-term antifungal treatment can be a successful regimen in indolent mucormycosis. Retrobulbar amphotericin B may be a prudent orbit-sparing adjuvant therapy in indolent mucormycosis.

Osteocutaneous radial forearm free flap in nonmandible head and neck reconstruction.

BACKGROUND: The osteocutaneous radial forearm free flap (RFFF) is a versatile flap primarily used to reconstruct composite defects involving the mandible. The purpose of this study was to describe our experience with this flap for nonmandible reconstruction. METHODS: All patients undergoing nonmandible osseous reconstruction with free-tissue transfer were reviewed. Patients with osteocutaneous RFFF reconstructions were evaluated. The retrospective review of all osteocutaneous RFFFs was performed from 1998 to 2014. RESULTS: One hundred forty-two nonmandible osseous reconstructions were performed. Twenty-five patients underwent nonmandible osteocutaneous RFFF reconstruction. Eleven patients failed previous nonmicrovascular reconstruction. Reconstruction was for defects of the: palatomaxillary complex (n = 15), orbitomaxillary complex (n = 4), nasomaxillary complex (n = 4), larynx (n = 1), and clavicle (n = 1). There were no flap compromises. Postoperative complications included: 2 partial intraoral dehiscences; 1 recipient-site infection; and 1 seroma. Eight reconstructions required secondary procedures to improve functional and/or cosmetic outcomes. CONCLUSION: The osteocutaneous RFFF is a robust flap that can be used to reconstruct composite defects involving bone and soft-tissue beyond the mandible.