Pott puffy tumour
Subacute clinical history of frontal headaches that has evolved with a forehead lump.
CT Brain and paranasal sinuses
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There is soft tissue obliteration of the anterior ethmoid cells and both frontal paranasal sinuses, with a focal bone defect of the anterior wall of the right frontal sinus that communicates with a soft tissue/subgaleal mass. This mass has a hyperdense rim and low central attenuation. The brain is unremarkable.
This patient has been further managed with surgical drainage a frontal region abscess. MRI (not shown) did not show signs of intracranial complications such as subdural empyema.