Efficacy of high-resolution CT in differential diagnosis of chronic suppurative otitis media and cholesteatoma otitis media by soft-tissue shadows
10.3760/cma.j.issn.1673-0860.2011.05.009
- VernacularTitle:高分辨率CT对慢性化脓性中耳炎和胆脂瘤中耳炎软组织分型的诊断价值
- Author:
Xiao-Wei SUN
1
;
Jian-Ji ZHANG
;
Yuan-Ping DING
;
Fen-Fen DOU
;
Han-Bing ZHANG
;
Ke-Bo GONG
;
An-Ting XU
Author Information
1. 山东大学齐鲁儿童医院
- Keywords:
Otitis media,suppurative;
Cholesteatoma,middle ear;
Tomography,x-ray computed
- From:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2011;46(5):388-392
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evalute the efficacy of high-resolution CT(HRCT) in differential diagnosis and treatment of chronic suppurative otitis media and cholesteatoma otitis media by soft-tissue shadows. Methods HRCT scanning was performed in 120 cases, 153 ears, with chronic otitis suppurative media and cholesteatoma otitis media, of which original data were processed with multi-planar reconstructtion (MPR) and maximum intensity projection ( MIP) , the characteristics of the soft-tissue shadows' growth, window width or window leveling and bony destruction were respectively observed, as well as compared with the surgery findings. Results In 120 patients (133 ears), 109 ears were diagnosed as cholesteatoma otitis media, and 44 ears were diagnosed as chronic suppurative otitis media, among which 33 ears had granulation tissue and 11 ears had secretion. One hundred and seven ears were postoperatively diagnosed as cholesteatoma otitis media, among which 25 ears had granulation tissue. Among 46 ears of chronic suppurative otitis media, 35 ears had granulation tissue, and only 11 ears had secretion. A 98. 6% diagnostic accuracy can be reached with HRCT in diagnosing cholesteatoma otitis media and chronic suppurative otitis media. The Youden's index was 0. 98, 0. 98 and 1. 00 respectively with HRCT in diagnosing cholesteatoma, granulation tissue and secretion. Conclusions Combination of the three different imaging methods, axial images, coronal MPR images and MIP images, can improve the efficacy of the HRCT diagnosis and definite chronic otitis media, which can be routinely used for surgery plan.
