Study Of Morphological Alterations In Pharyngeal Ostium Of Eustachian Tube And Its Surrounding Tissue And Its Association With SOM

SOM is a very popular disease in children of 4 to 8 yearsold. Treated improperly, it ofen caused hearing loss. SOMofen caused by the dysfunction of Eustachian tube whichresults with the negative pressure and fluid accumulationof the middle ear space. The exact mechanism of SOM is notclear yet, but it is generally accepted that obstructionof Eustachian tube is the primary reason.In our test , we observe the shape alterations ofpharyngeal ostium of Eustachian tube usingnasopharyngo-fibroscope and its relationship with SOM, inorder to investigate the mechanism of Eustachian tubedysfunction and choose effective therapy.144 cases from normal person and 151 cases from 89patients were observed using nasopharyngo-fibroscope anddivided into two groups: adult group and children group.All the shape of Eustachian tube were divided into triangletype ,crevice type, elliptical type and tubaeform type. Inaddition, we also observed whether there were otherpathological changes such as purulent secretion on thepharyngeal ostium, hypertrophy of adenoid and tubal tonsil,tissue edema surrounding the ostium tube, atropy of thepharyngeal ostium, et al ,which can affect the function ofEustachian tube.1.the shape of Eustachian of SOM group and control group.In adult control group, there were triangle type 66cases, crevice type 4 cases, elliptical type 5 cases,tubaeform type 8 cases. While in SOM group, triangle type5 cases, crevice type 63 cases, elliptical type 5 cases,tubaeform type 6 cases. There was a statistical differencebetween two groups. In children control group, there weretriangle type 24 type, crevice type 20 cases, ellipticaltype 8 cases, tubaeform type 8 cases, in SOM group, triangletype 27 cases, crevice type 30 cases, elliptical type 9cases, tubaeform type 6 cases, no difference was foundbetween two groups. It indicated that the shape ofpharyngeal ostium of Eustachian tube play an important rolein the genesis and development of SOM. It can be a newapproach of SOM treatment.2. The morphological alterations surrounding thepharyngeal ostium of Eustachian tube in control group andSOM group.In adult SOM group, purulent secretion on pharyngealostium 15 cases, hypertrophy of adenoid 1 cases, tissueedema surrounding the pharyngeal ostium 25 cases, tubaltonsil hypertrophy 1 cases, atrophy of pharyngeal ostium3 cases, normal 34 cases. In children SOM group, purulentsecretion on pharyngeal ostium 58 cases, hypertrophy ofadenoid 43 cases, tissue edema surrounding the pharyngealostium 9 cases, tubal tonsil hypertrophy 19 cases, atrophyof pharyngeal ostium 0 cases, normal 1 cases. We can foundthat all the cases have abnormalities in tissuessurrounding the ostium tube, which mainly is purulentsecretion on pharyngeal ostium, then is the hypertrophy ofadenoid and tubal tonsil. It indicated that pathologicalalterations surrouding the pharyngeal ostium of Eustachiantube play an primary role in the genesis and developmentof SOM in children.Above all, we can conclud that, various pathologicalalterations in nasopharyx have a close correlation with SOM.Condition allowed, naso-pharyngo-fibroscope should beprescribed for the SOM patients, thus we can detectmechanism of Eustachian tube dysfunction and provide a newindex for the treatment of SOM.