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Pott Puffy Tumor - StatPearls - NCBI Bookshelf

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Pott puffy tumor (PPT) describes a forehead edema resulting from osteomyelitis of the frontal bone with associated subperiosteal abscess. First described by Sir Percival Pott in 1768, a surgeon in London.[1] Initially the word tumor represented one of the four components of inflammation described by Aulus Cornelius Celsus; rubor (redness), tumor (swelling), calor (warmth), and dolor (pain). The tumor in this case refers to the observable swelling of the forehead, rather than to any neoplasia.[1]

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