OE PATH Flashcards
(13 cards)
Preauricular pits & Sinuses
-Failure of fusion of the hillocks
-sinus can become infected
Normal
Atresia (congenital)
Absence/closure of ear canal (entry to ear canal blocked) Partial absence/
microtia of the auricle
Could impact ME
:CHL
canalplasty?
Microtia (congenital)
Gross reduction in size (hypoplasia) of outer ear, with blind/absent EAC(Incomplete development) accompanied by atresia
ME often poorly formed: CHL
BAHA: sound processor-abutment-titanium implant
- BAHA Attract: sound processor- magnetic connection- implant
Haematoma
Cauliflower ear
Subperichondrial: affect pinna- blood vessels rupture, can’t be rapidly evacuated
Could have CHL
evacuated urgently to avoid damage to cartilage & deformity of pinna
Skin cancer of OE:
- squamous cell carcinoma (common)
( basal cell carcinoma
& melanoma)
- commonly in elderly
- bumpy/red erosion of external ear canal skin with cancer
- skin ulcers, scaly patches, pearly lumps under skin, pain
Could have CHL
- surgery to cut and/ radiotherapy
Canal stenosis
(still have space)
-after trauma
-from chronic infection
-after surgery
-wax & skin builds up behind can cause infection & hearing loss
CHL
widen ear canal via canalplasty/ meatoplasty
Keratosis obturans
(a plug of dead keratin cells)
-present redness
-EAC expanded
-infection & granulation
CHL
- frequent cleaning
- topical antibiotics
Exostoses
(commonly associated w surfer’s ear)
Area of localised, benign bony overgrowth in deep canal.
-normal skin looking
-typically no pain
Reduced hearing, if too much growth and occluding :CHL
Exostectomy: only if CHL, otitis externa (infection) or access to ME required
Diffuse (over large area) acute otitis externa
Discharge in ear canal with swelling of skin.
- caused by bacteria
- painful to touch
Analgesia (pain relief)
Aural toilet:
- suction
- dry mopping
- tissue spears
Topical treatment:
- antibiotic drops/ ointment
Furuncle (more concentrated in on area)
-localised collection of pus (big pocket)
- Commonly caused by Staphylococcus aureus (bacteria)
- more red & inflamed & localised & painful
(compared to exostoses)
Oral/intravenous antibiotics:
(if pt is immunocompromised/ spread of infection)
Fungal- aspergillus niger
- discharge, swelling, blood
-spore/dot like fungal growth
Oral/intravenous antibiotics:
(if pt is immunocompromised/ spread of infection)
Fungal otitis externa
(if fungus spread)
- may cause TM perforation if not treated adequately
More prevalence in humid environment
Oral/intravenous antibiotics:
(if pt is immunocompromised/ spread of infection)
Necrotising otitis externa
(commonly in elderly diabetics who are immunocompromised)
Starts at skin but spread to eat away bones
- granulations (new connective tissues formed) in the floor of EAC with blood vessels growth on wound)
- Biopsy to confirm then debridement (remove necrotic bone) if needed
- long term antibiotic
