a collection of pus enclosed in the brain tissue, caused by a bacterial or fungal infection

a mass of immune cells, pus, and other material that can

an area of infection within the brain

a purulent lesion of brain tissue, beginning as a focal infection, usually in the white matter surrounded by a typical inflammatory response

an infection in the brain that is encapsulated (confined within its own area) and localized to one or more areas inside of the brain. This condition causes problems with brain and spinal cord functions.

Brain abscess (or cerebral abscess) is an abscess caused by inflammation and collection of infected material coming from local (ear infection, infection of paranasal sinuses, infection of the mastoid air cells of the temporal bone, epidural abscess) or remote (lung, heart, kidney etc.) infectious sources within the brain tissue. The infection may also be introduced through a skull fracture following a head trauma or surgical procedures. Brain abscess is usually associated with congenital heart disease in young children.