Download - E.N.T 5th year, 3rd lecture (Dr. Muaid)
Diseases of the external ear
ByDr. Muaid I. Aziz
FICMS
Auricle Congenital TraumaInflammationtumors
Haematoma
Perichondritis
Malignant tumorsBCCSCC
External auditory meatusAtresia or stenosisCong. or acquired
waxTypes , colorPresentation Treatment
Foreign bodies InsectsHard soft
Otitis externaDefinition Causes ( 1ry , 2ry ) scratching of the ear with dirty fingers or
contaminated objects as matchstick or hair grip , faulty syringing , allergy may be the primary factor.
Typesmicrorganism
Furunculosis ( boils)DefinitionM.OPresentation Pain TendernessSwelling ( ant , post.) LymphadenitisTreatment
Diffuse otitis externaacute stage
Heat sensationSever painDischargeswollen canal skinCD LymphadentitisTreatment with dry
mopping + Ab/steroid
chronic stage
DischargeItchingThickening &
narrowing of the canalCongested granular
TM surfaceSame + sedation for
nocturnal itching
Treatment of both stages generally required thorough & gentle cleansing of external meatus , keeping the ear dry, avoiding trauma by scratching , attention to personal hygiene & treating the associated skin condition .
Otomycosis ( fungal infection) Types OrganismPresentationtreatment
Malignant otitis externa Skull base osteomyelitisM.oImmunocompromised pt3 stagesPresentation Treatment Curetting granulation tissue daily packing with ribbon gauze impegented with
gentamycin ointment IV antibiotics as 3rd generation cephalosporin , ticarcillin
& using oral ciprofloxacin (for 6 wks duration ) is very effective .
Surgery rarely required
osteomaSwimmer ear Single or mulitple exostosisConservative or surgery