Case report: Giant cystic lesions with a rare pulmonary diagnosis.

A 14-year-old male who presented with back pain was found to have giant cystic lesions on CXR and emphysematous changes on chest CT. He underwent right lobectomies and histopathology of the resected lesions demonstrated giant bullous emphysema with placental transmogrification. This has not been previously described in a pediatric patient. We describe his clinical findings, pulmonary function tests, and post-operative course. The pathogenesis of placental transmogrification remains uncertain. As this is the first reported pediatric case, we propose that giant bullous emphysema with placental transmogrification should be considered in the differential diagnosis for cystic lesions in the pediatric age group.