Nonmalignant Central Airway Obstruction: Options for Challenging Cases

Area of Science:

• Pulmonology
• Interventional Bronchoscopy

Background:

• Nonmalignant central airway obstruction (NMCAO) presents diverse etiologies and significant patient morbidity.
• Current management strategies for NMCAO lack standardized approaches and robust evidence for sustained airway patency.
• The nonspecific symptomatology of NMCAO complicates treatment standardization and research endeavors.

Purpose of the Study:

• To review the limited evidence for established nonsurgical treatments of NMCAO.
• To introduce emerging therapeutic options for managing NMCAO.
• To advocate for prospective, multicenter trials to evaluate long-term NMCAO outcomes.

Main Methods:

• Literature review of nonsurgical interventions for NMCAO.
• Discussion of novel techniques including mitomycin C injection, microdebrider use, biodegradable stents, radiotherapy, Hybrid Knife, and cryotherapy.
• Synthesis of current evidence and identification of research gaps.

Main Results:

• Existing nonsurgical treatments for NMCAO have limited supporting evidence for long-term efficacy.
• Several promising novel therapies are emerging for NMCAO management.
• There is a critical need for high-quality clinical trials to guide NMCAO treatment.

Conclusions:

• Optimal management for sustained airway patency in NMCAO remains undefined.
• Further research into novel and established nonsurgical treatments is essential.
• Prospective studies are crucial to establish evidence-based guidelines for NMCAO.