However, small lesions, especially when located in the IAC rather than the cerebellopontine angle cistern, can be missed on CT because of the limited contrast resolution. Middle ear adenomatous tumors are rare tumors in the middle ear that can cause NPT. They show significant contrast enhancement on CT and MRI but no vascular blush on angiography [70]. Otoscopic examination reveals a retrotympanic mass. CT Temporal Bone Without and With IV Contrast There is no relevant literature to support the use of CT temporal bone without and with IV contrast for evaluation of unilateral NPT. CT Temporal Bone Without IV Contrast CT can diagnose cochlear nerve aperture stenosis, which is associated with cochlear nerve hypoplasia, a condition in which patients can present with sensorineural hearing loss and tinnitus [75]. CT temporal bone is considered if Tinnitus chronic inflammation in the middle ear is suspected to differentiate otitis media from cholesteatoma [76]. It can also be considered for abnormalities of the vestibular aqueduct. CTA Head and Neck With IV Contrast There is no relevant literature to support the use of CTA head and neck with IV contrast for evaluation of unilateral NPT. CTA Head With IV Contrast There is no relevant literature to support the use of CTA head with IV contrast for routine evaluation of unilateral NPT. CTV Head With IV Contrast There is no relevant literature to support the use of CTV head with IV contrast for evaluation of unilateral NPT. MRA Head With IV Contrast There is no relevant literature to support the use of MRA head with IV contrast for evaluation of unilateral NPT. MRA Head Without and With IV Contrast There is no relevant literature to support the use of MRA head without and with IV contrast for evaluation of unilateral NPT. MRA Head Without IV Contrast There is no relevant literature to support the use of MRA head without IV contrast for evaluation of unilateral NPT.
Tinnitus. However, small lesions, especially when located in the IAC rather than the cerebellopontine angle cistern, can be missed on CT because of the limited contrast resolution. Middle ear adenomatous tumors are rare tumors in the middle ear that can cause NPT. They show significant contrast enhancement on CT and MRI but no vascular blush on angiography [70]. Otoscopic examination reveals a retrotympanic mass. CT Temporal Bone Without and With IV Contrast There is no relevant literature to support the use of CT temporal bone without and with IV contrast for evaluation of unilateral NPT. CT Temporal Bone Without IV Contrast CT can diagnose cochlear nerve aperture stenosis, which is associated with cochlear nerve hypoplasia, a condition in which patients can present with sensorineural hearing loss and tinnitus [75]. CT temporal bone is considered if Tinnitus chronic inflammation in the middle ear is suspected to differentiate otitis media from cholesteatoma [76]. It can also be considered for abnormalities of the vestibular aqueduct. CTA Head and Neck With IV Contrast There is no relevant literature to support the use of CTA head and neck with IV contrast for evaluation of unilateral NPT. CTA Head With IV Contrast There is no relevant literature to support the use of CTA head with IV contrast for routine evaluation of unilateral NPT. CTV Head With IV Contrast There is no relevant literature to support the use of CTV head with IV contrast for evaluation of unilateral NPT. MRA Head With IV Contrast There is no relevant literature to support the use of MRA head with IV contrast for evaluation of unilateral NPT. MRA Head Without and With IV Contrast There is no relevant literature to support the use of MRA head without and with IV contrast for evaluation of unilateral NPT. MRA Head Without IV Contrast There is no relevant literature to support the use of MRA head without IV contrast for evaluation of unilateral NPT.