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[Chronic septic granulomatosis imitating exogenic allergic alveolitis (farmer's lung)]
Abstract:
A 17-year-old boy demonstrated clinical and immunological signs of exogenic allergic alveolitis (farmer's lung). The patient grew up in the country and suffered from recurrent "pneumonia." In his serum precipitins were detected against Micropolyspora faeni, Aspergillus fumigatus and hay. Transbronchially obtained lung tissue showed histologically an inflammation of the epitheloid-cell-granulomatous type with fibrosis. A congenital defect of the neutrophilic function was suspected in view of the recurrent infections with significant polyclonal hypergammaglobulinemia, accompanied by leucocytosis and neutrophilia. In vitro studies of isolated patient's neutrophils showed that he suffered from chronic granulomatous disease. CGD should be considered in adolescents and adults with a history of severe infections and unexplained pulmonary fibrosis or pulmonary fibrosis simulating exogen allergic alveolitis.
Insights
A 17-year-old boy with farmer's lung was diagnosed with chronic granulomatous disease (CGD). CGD should be considered in patients with recurrent infections and unexplained pulmonary fibrosis.
Area of Science:
- Pulmonology
- Immunology
- Genetics
Context:
- Exogenic allergic alveolitis, commonly known as farmer's lung, presents with respiratory symptoms.
- Recurrent pneumonia in adolescents can indicate underlying immune deficiencies.
- Pulmonary fibrosis can mimic or coexist with other lung diseases.
Purpose:
- To report a case of a 17-year-old boy with clinical and immunological findings of farmer's lung.
- To investigate the underlying cause of recurrent infections and pulmonary fibrosis in the patient.
- To highlight the importance of considering chronic granulomatous disease (CGD) in similar cases.
Summary:
- A 17-year-old male presented with symptoms consistent with farmer's lung, including exposure to environmental antigens and characteristic lung inflammation.
- Immunological tests revealed precipitins against common allergens, while lung biopsy showed granulomatous inflammation and fibrosis.
- In vitro neutrophil function studies confirmed chronic granulomatous disease (CGD), a congenital defect affecting immune response.
Impact:
- This case underscores the necessity of suspecting CGD in adolescents and adults presenting with severe infections and unexplained pulmonary fibrosis.
- Early diagnosis of CGD can prevent further complications and guide appropriate management strategies.
- Recognizing CGD in the context of conditions mimicking farmer's lung improves diagnostic accuracy and patient outcomes.