دورية
Petrous Bone Extension of Middle-Ear Acquired Cholesteatoma
| العنوان: | Petrous Bone Extension of Middle-Ear Acquired Cholesteatoma |
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| المؤلفون: | Robert, Y., Dubrulle, F., Carcasset, S., Hennequin, C., Gaillandre, L., Vanecloo, F.-M., Lemaitre, L. |
| المصدر: | Acta Radiologica; 1996, Vol. 37 Issue: 2 p166-170, 5p |
| مستخلص: | Purpose: To describe CT and MR features of extension to the petrous bone, which is a rare complication of acquired cholesteatoma (AC).Material and Methods: Postcontrast CT was performed in 4 patients, in axial (n4) and coronal planes (n2). The section thickness was 1.2 or 2.5 mm. MR was performed in 3 cases, using T1- and T2-weighted images (n3) and postcontrast T1-weighted images (n2).Results: CT demonstrated a well-outlined lesion involving the petrous bone (n4). Density could be assessed in 3 cases, showing a hypodense unenhanced mass. Lateral (n1), superior (n2), and posterior (n2) semicircular canals were affected in 3 patients. AC extended to the vestibula, cochlea, and internal acoustic meatus (IAM) in 3 patients. Two ACs extended to the level of IAM, whereas 2 extended further, to the petrous apex. In one case the sphenoid sinus was affected. On MR imaging the lesion was hypointense relative to brain on T1-weighted images and hyperintense on T2-weighted images. MR imaging helped to delineate the lesion and to distinguish it from other cystic lesions of the petrous bone.Conclusion: CT and MR offer accurate preoperative assessment of the extension of cholesteatoma, which helps to choose the surgical approach. |
| قاعدة البيانات: | Supplemental Index |
PDF full text from Publisher | تدمد: | 02841851 16000455 |
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| DOI: | 10.1080/02841859609173438 |