This protocol addresses the late-onset form of radiation-induced lung injury — radiation pulmonary fibrosis (RPF) — which presents as delayed, progressive dyspnea associated with lung scarring, arising more than one year after the completion of radiation therapy.
Progressive dyspnea with lung scarring consistent with radiation pulmonary fibrosis, occurring more than one year after radiation therapy — temporally distinct from radiation pneumonitis, which typically develops within the first six months post-treatment.
Management is primarily supportive. Supplemental oxygen is a central component of care for symptomatic relief. The full structured protocol provides the complete clinical pathway and criteria for specialist referral.
RP occurs within 6 months of therapy (most often within 12 weeks), whereas RPF occurs > 1 year following therapy.
Clinically significant radiation-induced pulmonary fibrosis typically occurs months to years following therapy and is described as progressive dyspnea associated with lung scarring.
Unfortunately, there is no effective therapy for established lung fibrosis, and treatment is primarily supportive: supplemental oxygen should be provided for symptomatic relief, and patients should be referred to a pulmonologist with experience treating restrictive lung disease.
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