Percutaneous Lung Biopsy in Immunocompromised Pediatric Patients.

Abstract

To determine the diagnostic yield and safety of image-guided lung biopsies in immunocompromised pediatric patients. This was a retrospective pediatric cohort study conducted from June 2000 to April 2017. Subjects were 0-17 years of age (median, 10 years of age). There were 46 males (48%). A total of 73 consecutive image-guided lung biopsies were performed in 68 patients (weight range, 4.9-97.3 kg [median, 25.3 kg]). The indication for biopsy was to isolate an organism to tailor medical therapy. All patients were immunocompromised with an underlying history of bone marrow transplantation (n= 50), primary immunodeficiency (n= 14), and solid organ transplantation (n= 4). Patient and technical factors were analyzed for rates of complication. Overall diagnostic yield was 43 of 73 patients (60%). There were 14 minor (19%) and 8 major (11%) complications. Major complications included pneumothorax or hemoptysis requiring intervention (n= 6), and death (n= 2). The histological diagnosis was an infectious cause in 5 of 8 major complications (63%). There were statistically significant differences between the rates of complications with the imaging modality used (P= .02) and the use of fine needle aspiration (P= .02). Image-guided percutaneous lung biopsy can be helpful in isolating an organism to tailor therapy. Biopsies performed in immunosuppressed patients result in an elevated complication risk of up to 30% and demonstrate lower diagnostic yield and increased mortality, which should warrant detailed discussion with the primary team and family.