HTHSCI 2F03 Lecture 10: anatomy sur-139-147
26 Dec 2020
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Anomalies of pinna, external auditory canal, tm or ossicles. Detection and mx of hearing loss before 6mo improves language. Malfusion accessory tags/auricles and preauricular pits, fistulae or sinuses. Sinuses may get infected, mimicking a sebaceous cyst. Can ischaemic necrosis of cartilage and subsequent fibrosis to cauliflower ears . Mx: aspiration + firm packing to auricle contour. Smooth, symmetrical bony narrowing of external canals. Secreted in outer 3rd of canal to prevent maceration. Syringing after 1wk softening with olive oil. T1hs ige-mediated inflam from allergen exposure mediator release from mast cells. Regularly washing bedding (inc. toys) on high heat or use acaricides. Avoid going outside when pollen count high. Od sl grass-pollen tablets qol in hay-fever. Viruses mucosal oedema and mucosal ciliary actions mucus retention 2o bacterial infection. Majority are bacterial infection 2o to viral. Discharge: from nose post-nasal drip c foul taste. Anosmia or cacosmia (bad smell w/o external source) Osteomyelits e. g. staph in frontal bone.
