Case 1: 9-year-old girl with profound bilateral congenital sensorineural hearing loss. Case 1: 9-year-old girl with profound bilateral congenital sensorineural.

Slides:

Advertisements

Similar presentations

Bilateral cavitary plaques.

Advertisements

Acquired cochlear nerve deficiency in a 14-year-old patient with hearing loss after meningococcal meningitis at the age of 6 months (patient A3). Acquired.

Mural cholesteatoma. Mural cholesteatoma. Axial (A) and coronal (B) HRCT scans show the shell of the cholesteatoma in the epitympanum (black arrow) and.

A 50-year-old man with MD. Axial thin-section CT image shows decreased distance between the vertical limb of the posterior semicircular canal and the posterior.

Two axial images from the same case of a facial nerve schwannoma involving the right mastoid segment of the facial nerve canal. Two axial images from the.

A 30-year-old man with PSA

123I/Tc-99m sestamibi subtraction scan (top left); neck sonogram in region of cystic mass (top right); axial arterial phase CT scan (bottom left); and.

Case 1. Case 1. CT scans in an 8-year-old boy with an ectopic tooth in the left nasal cavity.A, Coronal scan obtained with a bone window setting of 600-HU.

Axial CT scans of the brain and neck performed with contrast medium.

Axial contrast-enhanced CT scan demonstrates normal jugulodigastric lymph nodes bilaterally (curved arrows), which should not be confused with lesions.

Intraosseous temporal bone meningioma in a 45-year-old woman who presented with left-sided hearing loss and tinnitus. Intraosseous temporal bone meningioma.

Case 2: 14-year-old boy with headache, vomiting, dizziness, and ringing in the ear. Case 2: 14-year-old boy with headache, vomiting, dizziness, and ringing.

Case 1: 15-year-old boy with juvenile nasopharyngeal angiofibroma on the right side. Case 1: 15-year-old boy with juvenile nasopharyngeal angiofibroma.

A and B, HRCT of petrous temporal bones.

A, Axial CT in a 15-year-old girl with persistent conductive hearing loss poststapedectomy shows a small lucency in the left fissula antefenestrum (thin.

Right ECA angiogram in the lateral view shows the petrous branch of the MMA (black arrows) and the stylomastoid branch (white arrows) arising from the.

A 7-month-old boy with left hemimegalencephaly

An 11-year-old girl with left-face sensitivity and left-temple pain.

Venous diverticulum in a 69-year-old man with long-standing right-sided pulsatile tinnitus. Venous diverticulum in a 69-year-old man with long-standing.

Case 4: 25-year-old woman with pulsatile tinnitus.

A, Coronal CT scan of the paranasal sinuses in a 45-year-old women with difficulty breathing shows the typical appearance of crista galli pneumatization.

Intracranial hypertension in a 30-year-old woman presenting with headaches and tinnitus. Intracranial hypertension in a 30-year-old woman presenting with.

A, Axial CT in a 41-year-old man with vertigo and complete sensorineural hearing loss in the left ear after prior stapedectomy show focal hyperattenuation.

Axial CT sections involving vital structures of the temporal bone.

Aberrant course of the ICA in a 25-year-old man presenting with pulsatile tinnitus. Aberrant course of the ICA in a 25-year-old man presenting with pulsatile.

Bilateral cochlear nerve absence in a 7-year-old patient with severe dysplasia and bilateral absence of the cochlea (patient C10). Bilateral cochlear nerve.

A, Axial CT of a patient with bilateral DON and lack of fat prolapse through the superior ophthalmic fissure. A, Axial CT of a patient with bilateral DON.

High resolution bone algorithm CT scans.

Bony cochlear nerve canal atresia in a patient with CND

Coronal (A), axial (B), and right parasagittal (C) CT images in a 58-year-old man show bilateral protrusion of the IOC into the maxillary sinus. Coronal.

Two different cases of FNS, both coronal plane bone algorithm CT images show significant enlargement of the tympanic segment of the facial nerve with the.

Series of axial CT scans

EACC with intramural bone fragments.

A, Axial non-enhanced CT scan (soft-tissue algorithm) shows a heterogeneous right temporal bone lesion, with cortical thinning and bone remodeling of the.

CT scans obtained 2 months later

Cystic changes within the endplates adjacent to the implants.

Schematic drawing (A) showing the normal appearance (a) of the malleus head (mh) and incus body (ib) and the abnormal fused dysplastic malleus-incus complex,

KD involving the postauricular area and occipital scalp in an 11-year-old boy. KD involving the postauricular area and occipital scalp in an 11-year-old.

A, Axial high-resolution MR imaging in a 5-month-old girl with clinically suspected right-sided brachial plexus palsy shows avulsion injury of the right.

Case 1: 52-year-old woman with buzzing in right ear.

MR post-gadolinium SE T1 axial plane: extra-axial bilobed enhancing mass, involving the right cerebellopontine angle cistern (star), internal auditory.

Case 2: Agenesis of the left ICA

Coronal postcontrast T1-weighted image of the orbits in patient 1 demonstrates a heterogeneously enhancing ovoid lesion involving the right medial rectus.

Temporal bone CT in the Pöschl (A) and Stenvers (B) planes demonstrating a large defect (arrows) in the roof of the right superior semicircular canal.

Orbital amyloidoma in a 32-year old woman with a slowly increasing mass in the right orbit and generalized bone pain. Orbital amyloidoma in a 32-year old.

Axial contrast-enhanced CT scan shows ill-defined fat plane between the muscles. Axial contrast-enhanced CT scan shows ill-defined fat plane between the.

Axial contrast-enhanced CT scan shows bilateral facial soft-tissue tumor infiltration, bilateral enlarged middle cranial fossae (arrowheads), bilateral.

Congenital absence of the cochlear nerve with an isolated cochlea.

Contrast-agent–enhanced T1-weighted MR images (700/15) obtained in a 71-year-old man with skin cancer, who had TMJ tenderness and discomfort in the left.

Bone algorithm CT images from the same case, demonstrating focal enlargement of the right tympanic segment, in the axial (left) and coronal (right) planes.

A 67-year-old man with intraorbital, infraorbital nerve, and frontal nerve lesions. A 67-year-old man with intraorbital, infraorbital nerve, and frontal.

False-negative findings for skull base invasion by conventional CT images alone in a 74-year-old woman with nasopharyngeal carcinoma. False-negative findings.

A 72-year-old man with supraglottic laryngeal cancer.

Axial CT scan shows decalcification of sphenoid bone (arrowheads) adjacent to neurofibroma infiltration of the lateral rectus muscle (arrows) in the absence.

Saccular macula. Saccular macula. Axial (A and B), coronal (C and D), oblique sagittal (Poschl plane) (E and F), and oblique coronal (Stenvers plane) (G.

Neoplastic causes of perilabyrinthine fistula.

CT findings of a middle ear mass.

X-linked congenital deafness.

Patient 10. Patient 10. A 67-year-old man after radiation therapy at an outside hospital for base-of-tongue cancer. A and B, Axial contrast-enhanced CT.

A–C, Thin-section (1-mm) coronal and axial CT images of the skull base obtained with an edge-enhancing bone algorithm show enlargement (arrows) of the.

BOR syndrome. BOR syndrome. A, Axial CT image through the level of the cochlear aperture demonstrates a hypoplastic cochlea without a definable modiolus.

A 75-year-old woman with compression fractures at T12 and L1, which were treated with vertebroplasty. A 75-year-old woman with compression fractures at.

Case 2: 16-year-old boy, brother of girl in case 1, also with profound bilateral congenital sensorineural hearing loss. Case 2: 16-year-old boy, brother.

58 year-old man referred for SNHL and vertigo 2 days after stapedectomy with a reparative intravestibular granuloma, confirmed by surgery. 58 year-old.

A 16-year-old boy with rhabdomyosarcoma.

Patient 16: gestational-week fetus.

Axial (A)and coronal (B) CT images demonstrate a hyperattenuated mass eroding the roof of the glenoid fossa, abutting the Eustachian tube, and remodeling.

A, Axial CT in an 80-year-old man with sensorineural hearing loss shows deep intrusion into the vestibule (arrow). A, Axial CT in an 80-year-old man with.

A 73-year-old woman with well-differentiated SCCA of the lacrimal sac and nasolacrimal duct. A 73-year-old woman with well-differentiated SCCA of the lacrimal.

Subject 4. Subject 4. Axial CT scan at the level of the common crus (black arrow) shows a large bone defect caused by presumed AG (white arrow), located.

Presentation transcript:

Case 1: 9-year-old girl with profound bilateral congenital sensorineural hearing loss. Case 1: 9-year-old girl with profound bilateral congenital sensorineural hearing loss. A, Axial CT scan shows right petrous bone aplasia with absence of inner ear structures. The medial wall of the middle ear is flattened (arrow), being in close contact with the infratentorial nervous structures. Note normal differentiation of the malleus.B, Coronal CT scan shows a normally developed external and middle right ear. The long process of the incus (arrow) leans against the medial middle ear wall. The oval window, the stapes, and the second portion of the facial nerve are absent. A small dehiscence of the medial wall of the middle ear (arrowhead), located at the IAM, probably corresponds to the entrance of the facial nerve. Kathlyn Marsot-Dupuch et al. AJNR Am J Neuroradiol 1999;20:281-284 ©1999 by American Society of Neuroradiology