AME case reports · 2026
Cystic fibrosis complicated by allergic bronchopulmonary aspergillosis in a Chinese adolescent: a case report and literature review.
Клинический случайСтатьяНазвание и аннотация: Перевод в очереди
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Dang Yuhai, Deng Zhenfeng, Wang Ke, Luo Jin, Wang Chao, Long Feiyang, Kong Jinliang
Аннотация
BACKGROUND: Cystic fibrosis (CF) predisposes patients to allergic bronchopulmonary aspergillosis (ABPA). The objective of this study is to enhance the recognition of CF-related ABPA (CF-ABPA) in adolescents through a detailed case study. A multidisciplinary management approach is essential. Early diagnosis and intervention could substantially improve outcomes, warranting further longitudinal research on optimized treatment protocols.
CASE DESCRIPTION: A 15-year-old patient presenting with persistent respiratory symptoms underwent a series of diagnostic tests, including serum immunoglobulin E (IgE) testing, chest computed tomography (CT), bronchoscopy, bronchoalveolar lavage metagenomic next-generation sequencing (mNGS), and whole-exome sequencing to identify CFTR mutations. The diagnostic findings revealed markedly elevated serum IgE levels (2,359.0 IU/mL), the presence of bronchiectasis with mucus plugging on CT imaging, and mNGS detection of Aspergillus fumigatus with an abundance of 97.28%. The diagnosis of CF-ABPA was confirmed by identification of a pathogenic CFTR mutation. Later antifungal therapy and corticosteroids produced notable clinical improvement.
CONCLUSIONS: CF was under-recognized historically, but this case shows that it is a clinically important cause of bronchiectasis and ABPA in Chinese adolescents. The identification of Aspergillus was accurate with the mNGS. Genetic test confirmed that the subject is a CF patient with compound heterozygous mutations in CFTR gene. The finding urges the clinician to have a high index of suspicion for the CF-ABPA in those with asthma-like refractory symptoms with structural lung disease. When diagnosed early and accurately, antifungal therapy and inhaled corticosteroids can be administered timely. The patient experienced a notable improvement both clinically and radiologically, as well as functionally. The future work should promote awareness of this clinical entity and systematic screening of similar patients in China. Further multicenter studies are necessary to formulate diagnostic and therapeutic guides for CF-ABPA in Asia.
CASE DESCRIPTION: A 15-year-old patient presenting with persistent respiratory symptoms underwent a series of diagnostic tests, including serum immunoglobulin E (IgE) testing, chest computed tomography (CT), bronchoscopy, bronchoalveolar lavage metagenomic next-generation sequencing (mNGS), and whole-exome sequencing to identify CFTR mutations. The diagnostic findings revealed markedly elevated serum IgE levels (2,359.0 IU/mL), the presence of bronchiectasis with mucus plugging on CT imaging, and mNGS detection of Aspergillus fumigatus with an abundance of 97.28%. The diagnosis of CF-ABPA was confirmed by identification of a pathogenic CFTR mutation. Later antifungal therapy and corticosteroids produced notable clinical improvement.
CONCLUSIONS: CF was under-recognized historically, but this case shows that it is a clinically important cause of bronchiectasis and ABPA in Chinese adolescents. The identification of Aspergillus was accurate with the mNGS. Genetic test confirmed that the subject is a CF patient with compound heterozygous mutations in CFTR gene. The finding urges the clinician to have a high index of suspicion for the CF-ABPA in those with asthma-like refractory symptoms with structural lung disease. When diagnosed early and accurately, antifungal therapy and inhaled corticosteroids can be administered timely. The patient experienced a notable improvement both clinically and radiologically, as well as functionally. The future work should promote awareness of this clinical entity and systematic screening of similar patients in China. Further multicenter studies are necessary to formulate diagnostic and therapeutic guides for CF-ABPA in Asia.