Findings:
Left side:
Previous canal wall up mastoidectomy seen. Complete opacification of the resection cavity, the mastoid air cells and the middle ear cavity on the left side.
Partial deossification of the long limb of incus and the handle of malleolus on the left. No obvious erosion of the scutum. The tympanic membrane is retracted.
The external auditory canal, vestibular-cochlear apparatus and internal acoustic canal have a normal appearance. The vestibular aqueduct is normal size.
The course of the facial nerve is normal.
The carotid canal and jugular foramen are unremarkable.
Right side:
Compared to the previous study, newly appreciated soft tissue density within the right tympanic cavity, extending into the Prussak space, without any obvious bony erosion. The scutum, the tegmen tympani and the ossicular chain are intact. The tympanic membrane is retracted.
Partial obliteration of the mastoid air cells is seen on the right side with sclerotic changes of the mastoid.
The external auditory canal, vestibular-cochlear apparatus and internal acoustic canal have a normal appearance. The vestibular aqueduct is normal size.
The course of the facial nerve is normal.
The carotid canal and jugular foramen are unremarkable.
Mucoperiosteal thickening is seen in the paranasal sinuses bilaterally. Calcifications in the right maxillary sinus. Polypoid soft tissue thickening is also seen in the nasal cavities bilaterally.
Buccoangular impacted left upper third molar.
Conclusion:
Features likely in keeping with bilateral chronic suppurative otitis media (CSOM) with partial deossification of ossicles on the left side. Additional cholesteatoma cannot be ruled out. Further evaluation with HASTE DW-MRI is advised.
Chronic sinonasal polyposis.