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Pyogenic infection of the soft tissues. . In relation to the upper jawWithin the lipWithin the canine fossaPalatal subperiosteal intervalMaxillary antrumInfratemporal fossa spaceSubtemporalis muscle interval. . . The upper lip. . Surgical anatomy. Signs and symptoms. Treatment. . Differential diagnosisTrauma: Post-traumatic oedema will start to subside after 48 hours where as the physical signs will worsen if infection is present.Hypersensitivity reaction: Allergic swelling result from c9446
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