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