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- Title
Three-Dimensional Image Analysis of the Temporal Bone in Patients with Unilateral Attic Cholesteatoma.
- Authors
Tsai, L.-T.; Wang, C.-Y.; Lo, Y.-C.; Lin, C.-D.; Tsai, M.-H.
- Abstract
We determined temporal bone anatomy in patients with unilateral attic cholesteatoma. We compared the affected and normal ears of ten patients with unilateral attic cholesteatoma using three-dimensionally reconstructed high-resolution computed tomography images of the temporal bone. We determined the eustachian tube angle, eustachian tube length, sizes of the tympanic orifice of the eustachian tube, the pars flaccida, and the mastoid cavity, and distances of the pars flaccida and the tympanic orifice of the eustachian tube from the epitympanic roof. No significant differences were found between the normal and affected ears with regard to the size of the eustachian tube orifice, eustachian tube length or distances of the pars fiaccida and the tympanic orifice of the eustachian tube from the epitympanic roof. By contrast, the mastoid cavity and the eustachian tube angle were significantly larger in the normal ears than in the affected ears [mean, 6.99 cm<em>3</em> (S.D.,4.9 cm3) vs. 1.28 cm3 (0.81 cm3) and 16.7° (4.12°) vs. 13.89° (5.30°), respectively]. The pars flaccida was significantly smaller in the normal ears [1.07 cm (0.31 cm)] than in the affected ears [2.19cm (0.77 cm)]. The inherent anatomy of the eustachian tube may be particularly important in the formation of attic cholesteatomas.
- Subjects
THREE-dimensional imaging; TEMPORAL bone; CHOLESTEATOMA; EPITHELIAL tumors; TOMOGRAPHY; DIAGNOSTIC imaging; MEDICAL imaging systems; EUSTACHIAN tube; TYMPANIC membrane
- Publication
Neuroradiology Journal, 2010, Vol 23, Issue 3, p307
- ISSN
1971-4009
- Publication type
Article
- DOI
10.1177/197140091002300308