Immunodeficiency-Associated Childhood Interstitial Lung Diseases: Data from the Türkiye chILD Registry.
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Kekeç Handan, Şişmanlar Eyüboğlu Tuğba, Tana Aslan Ayşe, Medeni Volkan, Zirek Fazılcan, Tekin Mervenur, Gülen Figen, Güzelkaş İsmail, Eryılmaz Polat Sanem, Kıykım Ayça, Can Oksay Sinem, Başaran Abdurrahman Erdem, Ersoy Ali, Erdem Eralp Ela, Ünal Gökçen, Özsezen Beste, Kartal Öztürk Gökçen, Hangül Melih, Hızal Mina, Yılmaz Yeğit Cansu, Nayır Büyükşahin Halime, Ünal Füsün, Ramaslı Gürsoy Tuğba, Ayzıt Kılınç Sakallı Ayşe, Pekcan Sevgi, Çobanoğlu Nazan, Cinel Güzin, Gökdemir Yasemin, Girit Saniye, Yalçın Ebru, Emiralioğlu Nagehan, Ceylan Ahmet Cevdet, Orhan Diclehan, Oğuz Berna, Kiper Nural
Аннотация
AIMS: To evaluate the clinical and radiological characteristics of immunodeficiency-related chILD using data from the Türkiye chILD Registry (chILD-TR).
STUDY DESIGN: Retrospective cohort study.
METHODS: Patients registered with the B3 code, according to the chILD-European classification, from 18 participating centers were included. Patients were classified into primary immunodeficiency (PID) and secondary immunodeficiency (SID) groups. Demographic, clinical, and radiological variables were compared between the two groups.
RESULTS: Among 667 patients registered in the chILD-TR, 114 (17%) had immunodeficiency-related chILD, including 53 (47%) females. The median current age was 156 months (range: 23-357), the age at symptom onset was 60 months (range: 0-215), and the age at chILD diagnosis was 85 months (range: 2-217). PID was identified in 77 patients (67.6%) and SID in 37 patients (32.4%). The PID group had significantly lower median current age, age at first symptom, and age at chILD diagnosis compared with the SID group (p < 0.05). No significant differences were observed in growth z-scores between the groups (p > 0.05). A history of hematopoietic stem cell transplantation (HSCT) and a diagnosis of bronchiolitis obliterans (BO) were more frequent in the SID group (p < 0.05). The most common computed tomography findings were ground-glass opacities in PID and mosaic perfusion in SID. During follow-up, 14 patients (12.3%) died.
CONCLUSION: Immunodeficiency-associated chILD encompasses a heterogeneous spectrum of disorders and is associated with increased mortality. Distinct clinical and radiological patterns were observed between PID and SID. These findings underscore the importance of early detection, individualized diagnostic strategies, and ongoing follow-up to improve outcomes in this high-risk population. Recognition of post-infectious BO and following HSCT is critical for timely intervention.