EN4.5 | Ear Discharge — Summary & Reflection

KEY TAKEAWAYS

Ear discharge (otorrhoea) arises from the external ear or middle ear and requires systematic classification. The most important clinical decision is safe versus unsafe CSOM. Tubotympanic (safe) CSOM: central pars tensa perforation, mucoid-purulent non-foul odour, no cholesteatoma, rare complications — medical treatment (aural toilet + topical ciprofloxacin drops; NOT aminoglycosides in perforated ear) then elective myringoplasty when dry. Atticoantral (unsafe) CSOM/cholesteatoma: attic (pars flaccida) or marginal perforation, foul-smelling cheesy discharge, pearly keratinous debris, bone erosion, risk of facial palsy/labyrinthitis/meningitis/brain abscess — CT temporal bones + mastoidectomy mandatory. Complications of unsafe CSOM = surgical emergency. CSF otorrhoea: clear watery discharge post-trauma — halo ring sign + beta-2 transferrin diagnostic. Aminoglycoside drops (gentamicin, tobramycin, neomycin) are ototoxic in perforated ears — use ciprofloxacin drops. Never call atticoantral CSOM 'safe.'

REFLECT

The hook scenario describes a child who presented twice — once with CSOM when a cholesteatoma was missed, and again with a facial palsy and intracranial abscess. Reflect on the barriers to making the correct diagnosis at the first visit: was it a knowledge deficit (not knowing what attic crust looks like), a systems deficit (not having a microscope available), or a cognitive deficit (satisficing on a diagnosis of 'safe CSOM' without checking the attic)? What structural practices — a mandatory otomicroscopy policy, a checklist for examining the attic in every CSOM review, a lower threshold for CT referral — could prevent this error at the institutional level? Write two to three sentences about how you would advocate for better CSOM care in your future clinical setting.