الفهرس 
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Abstract
SUMMARY AND CONCLUSIONS
Secretory otitis media and chronic suppurative
otitis media media are common diseases in the field of
otolaryngology.
Eustachian tube has a major role in pathogenesis of
both conditions.
Cytological study of the eustachian tube can help us
to know whether any pathological changes occur in the
tubal mucosa during the course of secretory and chronic
suppurative otitis media.
Our study included 20 healthy persons as a control
group, 20 cases with secretory otitis media and 20 cases
with chronic suppurative otitis media.
All cases were examined clinically
by pure tone aUdiometry
and
and
aUdiologically
typmpanometry.
assessed
The pharyngeal orifice of eustachian tube was swabed
with the patients under general anaesthesia, in the
tonsillectomy position. Dry wipe technique was used with
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the aid of fibreoptic nasopharyngoscope. The swabs were
smeared on glass slides, fixed by absolute alcohol and
stained by Papanicoloau stain.
The slides were scanned by x 400. Each slide was
examined for at least 10 minutes.
Normal controls showed columnar ciliated cells and
goblet cells, but no plasma cells, metaplastic cells, or
histiocytes could be detected.
Cases with secretory otitis media showed increase in
columnar and goblet cells indicating hyperplasia of the
tubal mucosa with proliferation of goblet cells. Few
metaplastic cells were detected with increase in
leukocytic infiltration, and appearance of plasma cells,
indicating presence of infection with increase thickness
of tubal mucosa.
Cases with chronic suppurative otitis media showed
marked increase in ciliated and non ciliated columnar
cells with infiltration of plasma cells and histiocytes.
this is an indication of chronic suppurative infection.
from this results we can conclude that eustachian
tube is not just a passive conduit between the tympanic
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cavity and the nasopharynx, but its mucosa undergoes the
same pathological changes as mucosa of the tympanic
cavity during the course of secretory and chronic
suppurative otitis media, but to a lesser extent. This
changes may be the cause or the result of the
pathological changes in the tympanic cavity and antrum.
so, study of the tubal mucosa can give an idea about the
condition of the middle ear mucosa.
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