Preoperative CT Scan in middle ear cholesteatoma. Chemodectomas arising in temporal bone structures. Establishing a temporal bone laboratory: Axial HRCT image showing soft tissue density mass in the left middle ear cavity and is extending into the mastoid antrum through the aditus white square. On the other hand, decompression of the sigmoid sinus and jugular bulb should be considered as an additional life-saving procedure in conjunction with the prophylactic craniotomy recommended in all adult patients. The radiological findings of temporal bone in patients with chronic otitis media were presence of non-dependent soft tissue mass in maximum numbers followed by ossicle erosion, scutum erosion, sigmoid sinus plate erosion, labyrinthine fistula, tegmen erosion and mastoid cortex erosion.

Eur J Radiol ; A novice surgeon not only needs exposure to surgical anatomy and it’s variations but also needs to develop hand-eye coordination skills to gain expertise. The whole structure of stapes was impossible to be represented by two dimensional CT heretofore in use, but 3-D in our study showed the head, crus and foot plate of the stapes in detail. The histologic examination of the temporal bones from a patient with sclerosteosis explains the mechanisms involved in the progressive impairment of sound conduction and loss of cochlear, vestibular, and facial nerve function. B Shows erosion of the lateral semicircular canal creating a labyrinthine fistula white arrow – complications of cholesteatoma Click here to view. It is imperative to correlate the CT findings with the signs and symptoms in those clinical settings.

Fourteen of the patients received radiation therapy as all or part of their therapy; 6 patients were treated with radiation therapy alone, 3 patients were irradiated immediately postoperatively for residual disease, and 5 patients had radiation therapy for recurrence after operation. Establishing a temporal bone laboratory: CT scans were performed with CT of the middle ear in evaluation of cholesteatoma and other soft tissue masses comparison with pluridirectional tomography.

Fifty-nine cases 26 with medial otitis, 8 choresteatoma, 10 congenital malformation, 3 high jugular bulb, 2 otosclerosis, and 10 others were included in this study. To obtain convincing 3D images, physicians themselves have to choose exact theesis angles. Figure 11 A, B: Ossicular erosion was noted in 6 cases of TOM They were treated with cobalt radiation with doses ranging from to rad. Figure 4 A, B: Early diagnosis of this condition includes the use of bone scintigraphy since clinical obne alone cannot differentiate the skull base osteomyelitis from the severe type of otitis externa in which there is no extension to the adjacent bone.


Role of High Resolution Computed Tomography in Evaluation of Pathologies of Temporal Bone

Full Text Available Abstract Introduction Temporal bone paragangliomas TBPs are benign tumors arising from neural crest cells located along the jugular bulbus and the tympanic plexus. CT examination may demonstrate a serpentine tract, a sequestrum, cortical destruction or adjacent soft tissue swelling and can differentiate osteomyelitis from other epiphyseal lucent lesions, particularly chondroblastoma and osteoid osteoma. This had transdural intracerebral spread with a large component of solid enhancing matrix but no peripheral calcific rim.

In the present study, 5 cases were diagnosed as congenital anomaly on HRCT only three opted for corrective surgery.

hrct temporal bone thesis

Oblique extra-labyrinthine fractures were most frequent. All the patients except one were diabetic and having elevated ESR. It could present an anatomical relation tempporal those prosthesis and the oval window. A high proportion of patients being considered have contracted or operated mastoids, which reduces the feasibility of the transmastoid approach.


The sensitivity of HRCT, in the present study, for ossicular erosion was Axial image shows bony defect hct the jugular bulb and middle ear cavity – dehiscent jugular bulb Click here to view.

However such changes were of dubious clinical relevance, or arose as a result of artefact.

Cadaveric simulation is highly rated as an educational tool, but there may be a ceiling effect on educational outcomes after drilling temporal bones. Authors analysed the CT findings of the congenital ear anomalies of twenty-nine patients for 2 years and 3 months.


Male to female ratio of study population was 1. CT scan showed middle and inner ear abnormalities thesid with extensive and unsuspected calcification of the external ears and ossicular ligaments.

CT -MR image data fusion presents an accurate tool for planning the correct surgical procedure and is a. The purpose of this study was to assess the diagnostic and differential diagnostic value of high-resolution computed tomography in the evaluation of temporal-bone dystrophies. Axial image of the right temporal bone showing abnormal posterior course of the right internal carotid artery – aberrant right internal carotid artery coursing through the middle ear Click here to view.

It also strongly suggests that Hh individuals were predisposed to develop certain pathologies of the labyrinth capsule associated with bipedalism, in particular otosclerosis.

We present unusual imaging findings of petrified ears in a 9-year-old girl with Keutel syndrome. We retrospectively compared the findings of temporal bone CT with the surgical findings, and to assess statistical significance, the Chi-square test was used. In general surgical excision, radiotherapy and wait-and-scan protocols are the main management modalities for TBPs.

A rare case of chondroblastoma arising from the temporal bone that occurred in a year-old woman is reported.

hrct temporal bone thesis

Our patient underwent transmastoid facial decompression surgery of the right ear. Although the symptoms of SCD may be precipitated by head injury, no previous reports have described a temporal bone fracture directly causing SCD. In the case presented, an year-old boy underwent a planned canal-wall-down CWD tympano-mastoidectomy for tepmoral cholesteatoma preceded by a pre-operative surgical simulation using 3D-printed models of the temporal bone.