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Year : 2020  |  Volume : 9  |  Issue : 8  |  Page : 4067-4073

High-resolution computed tomography (HRCT) in pediatric and adult patients with unsafe chronic suppurative otitis media (CSOM) and its surgical correlation

1 Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
2 Department of Anesthesia, Government Medical College and Hospital, Sector-32, Chandigarh, India
3 Department of Radiology, Guru Gobind Singh (GGS) Medical College and Hospital, Baba Farid University of Health Sciences, Faridkot, Punjab, India
4 Department of Radiology, University of Calgary, Canada
5 Government Medical College and Hospital, Patiala, Punjab, India
6 Department of Radiology, University of Alabama at Birmingham, Birmingham, United States of America

Correspondence Address:
Dr. Paramdeep Singh
Department of Radiology, Guru Gobind Singh (GGS) Medical College and Hospital, Baba Farid University of Health Sciences, Faridkot, Punjab
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jfmpc.jfmpc_455_20

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Background and Aim: Atticoantral, alias unsafe type of CSOM affects the posterosuperior part of the middle ear cleft and is frequently coupled with complications and bony erosions. This study aimed to correlate the high-resolution computed tomography (HRCT) temporal bone and intraoperative findings in the patients with the unsafe type of CSOM. Methods: This prospective study included 50 patients (28 males: 22 females; mean age 24 ± 14 years) who presented with clinically suspected unsafe CSOM. All patients underwent HRCT of the temporal bone and subsequent surgical procedure. The intraoperative and histopathological findings were compared with HRCT findings. Descriptive statistics, sensitivity, specificity, and positive and negative predictive value for HRCT were calculated. Student's t-test and Chi-square test were performed. Results: Out of 50 patients, left, right, and bilateral ear involvement were seen in 42% (21/50), 38% (19/50), and 20% (10/50) patients, respectively. Ear discharge was the most common symptom (100%) followed by earache (66%), vertigo (16%), and tinnitus (14%), respectively. Cholesteatoma was reported in 82% (49/60) of ears on HRCT while histopathological and intraoperative evaluation confirmed the diagnosis in 40 out of 49 ears. In 18% (11/60) ears, the cholesteatoma was not diagnosed on HRCT evaluation; however, the intraoperative and histopathological assessment revealed cholesteatoma in six patients while the rest had granulation tissue. For detection of ossicular erosions, tegmen erosions, erosions of facial nerve canal, erosions of sigmoid sinus plate, and erosions of lateral/posterior semicircular canals; HRCT had high sensitivity (86.44%–100%) and specificity (93.33%–100%). Conclusion: HRCT has a superb correlation with intraoperative findings and is a valuable tool for preoperative assessment of temporal bone pathologies.

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