放射记忆性肺炎是由全身药物（如化疗和免疫治疗）或疫苗接种引发的先前受放射治疗的肺实质的炎症反应。患者在开始用药或接种疫苗后不久就会出现非特异性症状，例如咳嗽、气短或缺氧。仔细评估患者的病史，包括胸部放射治疗计划和触发剂的启动时间，结合 CT 检查结果，有助于诊断。一旦确诊，治疗包括停止致病药物和/或开始类固醇治疗。将这种相对罕见的实体与肿瘤患者其他常见的治疗后并发症（例如复发性恶性肿瘤、感染或药物引起的肺炎）区分开来，对于指导下游临床管理至关重要。版权所有 © 2024 韩国放射学会。

Radiation recall pneumonitis is an inflammatory reaction of previously radiated lung parenchyma triggered by systemic pharmacological agents (such as chemotherapy and immunotherapy) or vaccination. Patients present with non-specific symptoms such as cough, shortness of breath, or hypoxia soon after the initiation of medication or vaccination. Careful assessment of the patient's history, including the thoracic radiation treatment plan and timing of the initiation of the triggering agent, in conjunction with CT findings, contribute to the diagnosis. Once a diagnosis is established, treatment includes cessation of the causative medication and/or initiation of steroid therapy. Differentiating this relatively rare entity from other common post-therapeutic complications in oncology patients, such as recurrent malignancy, infection, or medication-induced pneumonitis, is essential for guiding downstream clinical management.Copyright © 2024 The Korean Society of Radiology.