Thoracic actinomycosis: an unusual childhood infection

I have reported a rare case of thoracic actinomycosis in a child with a chest wall mass and pneumonic infiltrate. This case emphasizes the possibility of actinomycosis occurring in a well child with no previous dental problems, chronic lung disease, loss of consciousness, or immunocompromised status. The findings on thoracic computed tomography contributed to the early consideration of actinomycosis in the differential diagnosis.