ClariPACS

Neuro_CT_Temporal_Bone: 6 M, right conductive hearing loss.

CT TEMPORAL BONES WITHOUT CONTRAST:
 
CLINICAL HISTORY: 6 years of age, Male, right-sided hearing loss.
 
FINDINGS: 
 
There is no abnormality of the visualized brain. 
 
RIGHT TEMPORAL BONE: 
 
The external auditory canal is intact. 
The tympanic membrane is preserved. 
The scutum is intact. 
The middle ear cavity is clear. 
The head of the malleus appears anteriorly and laterally subluxed/dislocated in relation to the incus. The incostapedial articulation is not well delineated and appears asymmetric compared with the left.   
The cochlea is preserved. 
The vestibule is intact. 
The semicircular canals (superior, lateral, and posterior) are intact. 
The vestibular aqueduct is not enlarged. 
The facial nerve canal (intracanalicularlabyrinthine, geniculatetympanic, mastoid, stylomastoid foramen segment), is without abnormality. 
The internal auditory canal is preserved. 
The mastoid air cells are clear. 
The tegmen demonstrates no dehiscence. 
The skull base foramina (foramen ovaleforamen spinosum, hypoglossal canal) are intact. 
 
LEFT TEMPORAL BONE: 
 
The external auditory canal is intact. 
The tympanic membrane is preserved. 
The scutum is intact. 
The middle ear cavity is clear. 
The ossicles (malleus, incus, and stapes) are intact. 
The cochlea is preserved. 
The vestibule is intact. 
The semicircular canals (superior, lateral, and posterior) are intact. 
The vestibular aqueduct is not enlarged. 
The facial nerve canal is without abnormality. 
The internal auditory canal is preserved. 
The mastoid air cells are clear. 
The tegmen demonstrates no dehiscence. 
The skull base foramina are intact.

(Anatomy: oval windowsinus tympani, aditus ad antrum)
 
IMPRESSION: 
 
1.  Right incudomalleolar subluxation/dislocation. Additionally, the right incostapedial articulation is not well delineated and appears asymmetric compared with the left. Normal appearance of the right inner ear structures.
 
2.  No left temporal bone abnormality. 

(Incudomalleolar dislocation)


Accession: CL27388571

Study description: LPCH CT INNER AUD CANAL WO C 70480

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