sinusitisAnatomyofthenasalsinusesAnteriorsinus:maxillarysinusfrontalsinusanteriorethmoidalsinusTheyallopeninthemiddlemeatus.Posteriorsinus:posteriorethmoidalsinus:openinthesuperiormeatussphenoidsinus:openinsphenoethmoidalrecessoverview?Sinusitishasbeendefinedasaninflammationofthemucousmembraneofthesinuses.twotypes-acutesinusitisandchronicsinusitis.monlyfollowsacold.monlyinvolvedisthemaxillaryfollowedinturnbyethmoid,frontalandsphenoid.Multisinusitis:Pansinusitis:AetiologyofsinusitisingeneralExcitingcausesNasalinfectionSwimminganddivingTraumaDentalinfectionPredisposingcauseslocalObstructiontosinusventilationanddrainage
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