Orbital abscess as a complication of Pott's puffy tumour in an adolescent male.

Pott's puffy tumour (PPT) is a known complication of frontal sinusitis. It is defined as subperiosteal abscess formation due to osteomyelitis of the frontal bone presenting as a forehead swelling. It is a life-threatening condition that can lead to intracranial and intraorbital complications. Gadolinium-enhanced MRI and contrast CT scan are the best modalities to localise and define the collection, in addition to confirming disease extension. Once confirmed by imaging and depending on disease extension, management of PPT requires a multidisciplinary team approach and depends on the local provision of surgical care. Following surgical drainage of the abscess cavity, a prolonged course of antibiotics is required postoperatively to treat the underlying osteomyelitis. © BMJ Publishing Group Limited 2019. No commercial re-use. See rights and permissions. Published by BMJ.