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13 Cards in this Set
- Front
- Back
- 3rd side (hint)
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External soft tissue prominence in diabetics
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Malignant Otitis Externa (Necrotizing)
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Pseudomonas infection
Extends through cartilaginous canals, usually restricted by TM. |
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DDx of Malignant Otitis Externa bony distruction
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Radiation osteonecrosis
Malignancy (SCC, BCC, melanoma...) |
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Congenital Cysts of External Ear derive from which Branchial Cleft?
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First Branchial Cleft.
Sinus tracts can develop that drain into ext. ear. |
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Multiple Osteomas, what syndrome?
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Gardener's, gastrointestinal polyps, need colonoscopy
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Keratosis Obturans, sxs, age, associations?
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Similar to Cholesteatoma in appearance. Age <40, very painful, associated with bronchiectasis, sinusitis
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What structures do the Eustachian tubes exit near?
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torus tobarius, tensor levator palatini muscles
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Air in the lateral pharyngeal recess can be mistaken for air in E. Tube.
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What happens if a Bezold Abscess causes mastoid tip necrosis?
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It can spread inferiorly along SCM, trapezius to larynx or mediastinum.
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What happens if a Bezold Abscess spreads medially/internally?
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It can cause septic thrombophlebitis of the adjacent sigmoid sinus causing dural venous thrombosis.
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Sign of Chronic Otomastoid Effusion?
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Osteoneogensis of mastoid air cells.
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Most common location of Pars Flaccida Cholesteatomas?
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Prussack's space, behind scutum.
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Blind spot for Pars Tensa Cholesteatomas?
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Sinus tympani
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Lateral displacement of ossicles
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What differentiates Cholesteatoma from granulation tissue?
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Granulation tissue enhances with contrast and will not cause bony destruction.
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Granulation tissue can be due to cholesteatoma or post inflammatory.
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Gradenigo's Triad?
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Suppurative Otitis Media, Retro-orbital pain, Lateral Rectus Palsy. Due to long standing infection.
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