"Post-contrast fat-saturated 3D FLAIR has been shown to be superior in detecting enhancement in areas of active disease, both surrounding the cochlear as well as within the cochlear itself, most often the basal turn 30,31."
"Pre-operative imaging"
"Post-operative imaging"
"Post-operative imaging should evaluate"
"The term otosclerosis is preferred in clinical practice and dominates the literature. Strictly, it only refers to the inactive late phase of the disease."
"The term otosclerosis is preferred in clinical practice and dominates the literature. Strictly, it only refers to the inactive late phase of the disease."
"Much of the clinical course is characterised by osteolytic rather than sclerotic bone, and it is this phase that is most easily seen on imaging. As such, head and neck radiologists often prefer the term otospongiosis."
"Otosclerosis most commonly presents with hearing loss, most often conductive, but can also be sensorineural or mixed, and is frequently bilateral 3,9. The clinical course is usually slowly progressive over the years. Hearing loss may be exacerbated by pregnancy 6. Hearing loss is variably accompanied by tinnitus and vestibular symptoms 15."
"CT grading system (Symons and Fanning)"
"CT is not considered reliable in the evaluation of intravestibular protrusion of stapes prostheses (given heterogeneity in criteria and presence of artifacts due to the presence of the prostheses) 15."
Expected headings
"Subtypes"
"CT grading system (Symons and Fanning)"
"Pre-operative imaging"
"Post-operative imaging"
"Much of the clinical course is characterised by osteolytic rather than sclerotic bone, and it is this phase that is most easily seen on imaging. As such, head and neck radiologists often prefer the term otospongiosis."
"solely fenestral, either spongiotic or sclerotic lesions, evident as a thickened stapes footplate, and/or decalcified, narrowed or enlarged round or oval windows"
"Symptomatic otosclerosis is relatively common, affecting 0.1-1% of the population, typically presenting during the 4th and 5th decades; however, because symptoms tend to worsen gradually, it is often difficult to precisely determine the onset 6,17. It is responsible for 18% to 22% of conductive hearing loss cases 16."
"On otoscopy, there are usually minimal or no findings, except in severe cases where cochlear involvement can result in hyperaemia of the cochlear promontory (Schwartze sign) 1-3. On pure-tone audiometry, there may be a characteristic decrease in bone conduction at 2000 Hz (Carhart notch). Tympanometry usually shows a type A tympanogram; stapedial reflexes are often absent or can exhibit a two-staged pattern (on-off stapedial reflexes)."
"involvement of the round window niche, which when present usually accompanies fenestral disease 12; however, isolated round window otosclerosis can occur on occasion 12,13"
"There are two subtypes:"
"History and etymology"