Utility of high resolution computed tomography in pre-operative evaluation of cholesteatoma

Amith Jacob; Sandeep Sreedhar; Anwar Sadath Choolakkaparambu Aboobakker; Nalakath Kunjhimon Bashir

doi:10.18203/issn.2454-5929.ijohns20202781

Authors

Amith Jacob Department of Otorhinolaryngology, MES Medical College, Malappuram, Kerala, India
Sandeep Sreedhar Department of Otorhinolaryngology, MES Medical College, Malappuram, Kerala, India
Anwar Sadath Choolakkaparambu Aboobakker Department of Otorhinolaryngology, MES Medical College, Malappuram, Kerala, India
Nalakath Kunjhimon Bashir Department of Otorhinolaryngology, MES Medical College, Malappuram, Kerala, India

DOI:

https://doi.org/10.18203/issn.2454-5929.ijohns20202781

Keywords:

Cholesteatoma, HRCT, Sensitivity, Specificity, Predictive value

Abstract

Background: Prior knowledge about temporal bone anatomy and extent of cholesteatoma may help the ENT surgeon to plan the surgery and avoid impending complications. This study aims to evaluate the role of pre-operative high resolution computed tomography (HRCT) in cholesteatoma and to compare HRCT findings with intra-operative findings.

Methods: A diagnostic evaluation study was performed among 30 atticoantral cholesteatoma cases presenting in the ENT outpatient department of MES Medical College in Malappuram, Kerala over a period of one and half years. The intraoperative findings were considered as the gold standard to which the radiological features were compared and the sensitivity, specificity and predictive value of HRCT were determined.

Results: High sensitivity of HRCT was noted in detecting soft tissue in mesotympanum 94.4% and aditus ad antrum 94.1%. Low sensitivity 59% was noted in detecting stapes erosion when compared to malleus and incus erosions. Except in conditions of soft tissue in epitympanum, dural plate dehiscence and sclerotic mastoid, a high specificity of 100% was noted in all other findings.

Conclusions: This study reaffirms the usefulness of HRCT in pre-operative evaluation of cholesteatoma-atticoantral type.

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