Radiopaedia.org

There is a heterogeneous soft tissue mass with a high attenuation rim overlying the frontal sinuses. Opacification of the frontal sinuses is in keeping with ongoing inflammatory change. Destruction of the underlying frontal bone is in keeping with bony involvement. There is connection through the inner table of the skull to the intracranial soft tissues, where there is a further crescentic anterior frontal extradural collection. Appearances are in keeping with soft tissue infection with osteomyelitis and an empyema.